redonkable/remarkable-linux
redonkable/remarkable-linux
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This commit is contained in:
Jeff Garzik 2005-10-30 01:58:18 -05:00
parent b0c4e148bd 81cfb8864c
commit f0612bbc41
174 changed files with 3286 additions and 3511 deletions
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9
Documentation/cachetlb.txt
View file

@ -49,9 +49,6 @@ changes occur:
page table operations such as what happens during
fork, and exec.
Platform developers note that generic code will always
invoke this interface without mm->page_table_lock held.
3) void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
@ -72,9 +69,6 @@ changes occur:
call flush_tlb_page (see below) for each entry which may be
modified.
Platform developers note that generic code will always
invoke this interface with mm->page_table_lock held.
4) void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
This time we need to remove the PAGE_SIZE sized translation
@ -93,9 +87,6 @@ changes occur:
This is used primarily during fault processing.
Platform developers note that generic code will always
invoke this interface with mm->page_table_lock held.
5) void flush_tlb_pgtables(struct mm_struct *mm,
unsigned long start, unsigned long end)

2
Documentation/kernel-parameters.txt
View file

@ -1460,8 +1460,6 @@ running once the system is up.
stifb= [HW]
Format: bpp:<bpp1>[:<bpp2>[:<bpp3>...]]
stram_swap= [HW,M68k]
swiotlb= [IA-64] Number of I/O TLB slabs
switches= [HW,M68k]

24
Documentation/m68k/kernel-options.txt
View file

@ -626,7 +626,7 @@ ignored (others aren't affected).
can be performed in optimal order. Not all SCSI devices support
tagged queuing (:-().
4.6 switches=
4.5 switches=
-------------
Syntax: switches=<list of switches>
@ -661,28 +661,6 @@ correctly.
earlier initialization ("ov_"-less) takes precedence. But the
switching-off on reset still happens in this case.
4.5) stram_swap=
----------------
Syntax: stram_swap=<do_swap>[,<max_swap>]
This option is available only if the kernel has been compiled with
CONFIG_STRAM_SWAP enabled. Normally, the kernel then determines
dynamically whether to actually use ST-RAM as swap space. (Currently,
the fraction of ST-RAM must be less or equal 1/3 of total memory to
enable this swapping.) You can override the kernel's decision by
specifying this option. 1 for <do_swap> means always enable the swap,
even if you have less alternate RAM. 0 stands for never swap to
ST-RAM, even if it's small enough compared to the rest of memory.
If ST-RAM swapping is enabled, the kernel usually uses all free
ST-RAM as swap "device". If the kernel resides in ST-RAM, the region
allocated by it is obviously never used for swapping :-) You can also
limit this amount by specifying the second parameter, <max_swap>, if
you want to use parts of ST-RAM as normal system memory. <max_swap> is
in kBytes and the number should be a multiple of 4 (otherwise: rounded
down).
5) Options for Amiga Only:
==========================

3
arch/alpha/mm/numa.c
View file

@ -371,6 +371,8 @@ show_mem(void)
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_online_node(nid) {
unsigned long flags;
pgdat_resize_lock(NODE_DATA(nid), &flags);
i = node_spanned_pages(nid);
while (i-- > 0) {
struct page *page = nid_page_nr(nid, i);
@ -384,6 +386,7 @@ show_mem(void)
else
shared += page_count(page) - 1;
}
pgdat_resize_unlock(NODE_DATA(nid), &flags);
}
printk("%ld pages of RAM\n",total);
printk("%ld free pages\n",free);

6
arch/alpha/mm/remap.c
View file

@ -2,7 +2,6 @@
#include <asm/pgalloc.h>
#include <asm/cacheflush.h>
/* called with the page_table_lock held */
static inline void
remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
unsigned long phys_addr, unsigned long flags)
@ -31,7 +30,6 @@ remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
} while (address && (address < end));
}
/* called with the page_table_lock held */
static inline int
remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
unsigned long phys_addr, unsigned long flags)
@ -46,7 +44,7 @@ remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address,
@ -70,7 +68,6 @@ __alpha_remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd;
pmd = pmd_alloc(&init_mm, dir, address);
@ -84,7 +81,6 @@ __alpha_remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
return error;
}

96
arch/arm/kernel/signal.c
View file

@ -139,93 +139,33 @@ struct iwmmxt_sigframe {
unsigned long storage[0x98/4];
};
static int page_present(struct mm_struct *mm, void __user *uptr, int wr)
{
unsigned long addr = (unsigned long)uptr;
pgd_t *pgd = pgd_offset(mm, addr);
if (pgd_present(*pgd)) {
pmd_t *pmd = pmd_offset(pgd, addr);
if (pmd_present(*pmd)) {
pte_t *pte = pte_offset_map(pmd, addr);
return (pte_present(*pte) && (!wr || pte_write(*pte)));
}
}
return 0;
}
static int copy_locked(void __user *uptr, void *kptr, size_t size, int write,
void (*copyfn)(void *, void __user *))
{
unsigned char v, __user *userptr = uptr;
int err = 0;
do {
struct mm_struct *mm;
if (write) {
__put_user_error(0, userptr, err);
__put_user_error(0, userptr + size - 1, err);
} else {
__get_user_error(v, userptr, err);
__get_user_error(v, userptr + size - 1, err);
}
if (err)
break;
mm = current->mm;
spin_lock(&mm->page_table_lock);
if (page_present(mm, userptr, write) &&
page_present(mm, userptr + size - 1, write)) {
copyfn(kptr, uptr);
} else
err = 1;
spin_unlock(&mm->page_table_lock);
} while (err);
return err;
}
static int preserve_iwmmxt_context(struct iwmmxt_sigframe *frame)
{
int err = 0;
char kbuf[sizeof(*frame) + 8];
struct iwmmxt_sigframe *kframe;
/* the iWMMXt context must be 64 bit aligned */
WARN_ON((unsigned long)frame & 7);
__put_user_error(IWMMXT_MAGIC0, &frame->magic0, err);
__put_user_error(IWMMXT_MAGIC1, &frame->magic1, err);
/*
* iwmmxt_task_copy() doesn't check user permissions.
* Let's do a dummy write on the upper boundary to ensure
* access to user mem is OK all way up.
*/
err |= copy_locked(&frame->storage, current_thread_info(),
sizeof(frame->storage), 1, iwmmxt_task_copy);
return err;
kframe = (struct iwmmxt_sigframe *)((unsigned long)(kbuf + 8) & ~7);
kframe->magic0 = IWMMXT_MAGIC0;
kframe->magic1 = IWMMXT_MAGIC1;
iwmmxt_task_copy(current_thread_info(), &kframe->storage);
return __copy_to_user(frame, kframe, sizeof(*frame));
}
static int restore_iwmmxt_context(struct iwmmxt_sigframe *frame)
{
unsigned long magic0, magic1;
int err = 0;
char kbuf[sizeof(*frame) + 8];
struct iwmmxt_sigframe *kframe;
/* the iWMMXt context is 64 bit aligned */
WARN_ON((unsigned long)frame & 7);
/*
* Validate iWMMXt context signature.
* Also, iwmmxt_task_restore() doesn't check user permissions.
* Let's do a dummy write on the upper boundary to ensure
* access to user mem is OK all way up.
*/
__get_user_error(magic0, &frame->magic0, err);
__get_user_error(magic1, &frame->magic1, err);
if (!err && magic0 == IWMMXT_MAGIC0 && magic1 == IWMMXT_MAGIC1)
err = copy_locked(&frame->storage, current_thread_info(),
sizeof(frame->storage), 0, iwmmxt_task_restore);
return err;
/* the iWMMXt context must be 64 bit aligned */
kframe = (struct iwmmxt_sigframe *)((unsigned long)(kbuf + 8) & ~7);
if (__copy_from_user(kframe, frame, sizeof(*frame)))
return -1;
if (kframe->magic0 != IWMMXT_MAGIC0 ||
kframe->magic1 != IWMMXT_MAGIC1)
return -1;
iwmmxt_task_restore(current_thread_info(), &kframe->storage);
return 0;
}
#endif

14
arch/arm/kernel/traps.c
View file

@ -483,29 +483,33 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
unsigned long addr = regs->ARM_r2;
struct mm_struct *mm = current->mm;
pgd_t *pgd; pmd_t *pmd; pte_t *pte;
spinlock_t *ptl;
regs->ARM_cpsr &= ~PSR_C_BIT;
spin_lock(&mm->page_table_lock);
down_read(&mm->mmap_sem);
pgd = pgd_offset(mm, addr);
if (!pgd_present(*pgd))
goto bad_access;
pmd = pmd_offset(pgd, addr);
if (!pmd_present(*pmd))
goto bad_access;
pte = pte_offset_map(pmd, addr);
if (!pte_present(*pte) || !pte_write(*pte))
pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
if (!pte_present(*pte) || !pte_write(*pte)) {
pte_unmap_unlock(pte, ptl);
goto bad_access;
}
val = *(unsigned long *)addr;
val -= regs->ARM_r0;
if (val == 0) {
*(unsigned long *)addr = regs->ARM_r1;
regs->ARM_cpsr |= PSR_C_BIT;
}
spin_unlock(&mm->page_table_lock);
pte_unmap_unlock(pte, ptl);
up_read(&mm->mmap_sem);
return val;
bad_access:
spin_unlock(&mm->page_table_lock);
up_read(&mm->mmap_sem);
/* simulate a write access fault */
do_DataAbort(addr, 15 + (1 << 11), regs);
return -1;

6
arch/arm/mm/consistent.c
View file

@ -397,8 +397,6 @@ static int __init consistent_init(void)
pte_t *pte;
int ret = 0;
spin_lock(&init_mm.page_table_lock);
do {
pgd = pgd_offset(&init_mm, CONSISTENT_BASE);
pmd = pmd_alloc(&init_mm, pgd, CONSISTENT_BASE);
@ -409,7 +407,7 @@ static int __init consistent_init(void)
}
WARN_ON(!pmd_none(*pmd));
pte = pte_alloc_kernel(&init_mm, pmd, CONSISTENT_BASE);
pte = pte_alloc_kernel(pmd, CONSISTENT_BASE);
if (!pte) {
printk(KERN_ERR "%s: no pte tables\n", __func__);
ret = -ENOMEM;
@ -419,8 +417,6 @@ static int __init consistent_init(void)
consistent_pte = pte;
} while (0);
spin_unlock(&init_mm.page_table_lock);
return ret;
}

7
arch/arm/mm/fault-armv.c
View file

@ -26,6 +26,11 @@ static unsigned long shared_pte_mask = L_PTE_CACHEABLE;
/*
* We take the easy way out of this problem - we make the
* PTE uncacheable. However, we leave the write buffer on.
*
* Note that the pte lock held when calling update_mmu_cache must also
* guard the pte (somewhere else in the same mm) that we modify here.
* Therefore those configurations which might call adjust_pte (those
* without CONFIG_CPU_CACHE_VIPT) cannot support split page_table_lock.
*/
static int adjust_pte(struct vm_area_struct *vma, unsigned long address)
{
@ -127,7 +132,7 @@ void __flush_dcache_page(struct address_space *mapping, struct page *page);
* 2. If we have multiple shared mappings of the same space in
* an object, we need to deal with the cache aliasing issues.
*
* Note that the page_table_lock will be held.
* Note that the pte lock will be held.
*/
void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
{

4
arch/arm/mm/ioremap.c
View file

@ -75,7 +75,7 @@ remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
pgprot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | L_PTE_WRITE | flags);
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, pgprot);
@ -97,7 +97,6 @@ remap_area_pages(unsigned long start, unsigned long phys_addr,
phys_addr -= address;
dir = pgd_offset(&init_mm, address);
BUG_ON(address >= end);
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd = pmd_alloc(&init_mm, dir, address);
if (!pmd) {
@ -114,7 +113,6 @@ remap_area_pages(unsigned long start, unsigned long phys_addr,
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_cache_vmap(start, end);
return err;
}

15
arch/arm/mm/mm-armv.c
View file

@ -179,11 +179,6 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
if (!vectors_high()) {
/*
* This lock is here just to satisfy pmd_alloc and pte_lock
*/
spin_lock(&mm->page_table_lock);
/*
* On ARM, first page must always be allocated since it
* contains the machine vectors.
@ -201,23 +196,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
set_pte(new_pte, *init_pte);
pte_unmap_nested(init_pte);
pte_unmap(new_pte);
spin_unlock(&mm->page_table_lock);
}
return new_pgd;
no_pte:
spin_unlock(&mm->page_table_lock);
pmd_free(new_pmd);
free_pages((unsigned long)new_pgd, 2);
return NULL;
no_pmd:
spin_unlock(&mm->page_table_lock);
free_pages((unsigned long)new_pgd, 2);
return NULL;
no_pgd:
return NULL;
}
@ -243,6 +229,7 @@ void free_pgd_slow(pgd_t *pgd)
pte = pmd_page(*pmd);
pmd_clear(pmd);
dec_page_state(nr_page_table_pages);
pte_lock_deinit(pte);
pte_free(pte);
pmd_free(pmd);
free:

46
arch/arm/oprofile/backtrace.c
View file

@ -49,42 +49,22 @@ static struct frame_tail* kernel_backtrace(struct frame_tail *tail)
static struct frame_tail* user_backtrace(struct frame_tail *tail)
{
struct frame_tail buftail;
struct frame_tail buftail[2];
/* hardware pte might not be valid due to dirty/accessed bit emulation
* so we use copy_from_user and benefit from exception fixups */
if (copy_from_user(&buftail, tail, sizeof(struct frame_tail)))
/* Also check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
return NULL;
if (__copy_from_user_inatomic(buftail, tail, sizeof(buftail)))
return NULL;
oprofile_add_trace(buftail.lr);
oprofile_add_trace(buftail[0].lr);
/* frame pointers should strictly progress back up the stack
* (towards higher addresses) */
if (tail >= buftail.fp)
if (tail >= buftail[0].fp)
return NULL;
return buftail.fp-1;
}
/* Compare two addresses and see if they're on the same page */
#define CMP_ADDR_EQUAL(x,y,offset) ((((unsigned long) x) >> PAGE_SHIFT) \
== ((((unsigned long) y) + offset) >> PAGE_SHIFT))
/* check that the page(s) containing the frame tail are present */
static int pages_present(struct frame_tail *tail)
{
struct mm_struct * mm = current->mm;
if (!check_user_page_readable(mm, (unsigned long)tail))
return 0;
if (CMP_ADDR_EQUAL(tail, tail, 8))
return 1;
if (!check_user_page_readable(mm, ((unsigned long)tail) + 8))
return 0;
return 1;
return buftail[0].fp-1;
}
/*
@ -118,7 +98,6 @@ static int valid_kernel_stack(struct frame_tail *tail, struct pt_regs *regs)
void arm_backtrace(struct pt_regs * const regs, unsigned int depth)
{
struct frame_tail *tail;
unsigned long last_address = 0;
tail = ((struct frame_tail *) regs->ARM_fp) - 1;
@ -132,13 +111,6 @@ void arm_backtrace(struct pt_regs * const regs, unsigned int depth)
return;
}
while (depth-- && tail && !((unsigned long) tail & 3)) {
if ((!CMP_ADDR_EQUAL(last_address, tail, 0)
|| !CMP_ADDR_EQUAL(last_address, tail, 8))
&& !pages_present(tail))
return;
last_address = (unsigned long) tail;
while (depth-- && tail && !((unsigned long) tail & 3))
tail = user_backtrace(tail);
}
}

18
arch/arm26/mm/memc.c
View file

@ -78,12 +78,6 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
if (!new_pgd)
goto no_pgd;
/*
* This lock is here just to satisfy pmd_alloc and pte_lock
* FIXME: I bet we could avoid taking it pretty much altogether
*/
spin_lock(&mm->page_table_lock);
/*
* On ARM, first page must always be allocated since it contains
* the machine vectors.
@ -92,7 +86,7 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
if (!new_pmd)
goto no_pmd;
new_pte = pte_alloc_kernel(mm, new_pmd, 0);
new_pte = pte_alloc_map(mm, new_pmd, 0);
if (!new_pte)
goto no_pte;
@ -101,6 +95,7 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
init_pte = pte_offset(init_pmd, 0);
set_pte(new_pte, *init_pte);
pte_unmap(new_pte);
/*
* the page table entries are zeroed
@ -112,23 +107,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
(PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
spin_unlock(&mm->page_table_lock);
/* update MEMC tables */
cpu_memc_update_all(new_pgd);
return new_pgd;
no_pte:
spin_unlock(&mm->page_table_lock);
pmd_free(new_pmd);
free_pgd_slow(new_pgd);
return NULL;
no_pmd:
spin_unlock(&mm->page_table_lock);
free_pgd_slow(new_pgd);
return NULL;
no_pgd:
return NULL;
}

6
arch/cris/arch-v32/mm/tlb.c
View file

@ -175,6 +175,8 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
return 0;
}
static DEFINE_SPINLOCK(mmu_context_lock);
/* Called in schedule() just before actually doing the switch_to. */
void
switch_mm(struct mm_struct *prev, struct mm_struct *next,
@ -183,10 +185,10 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
int cpu = smp_processor_id();
/* Make sure there is a MMU context. */
spin_lock(&next->page_table_lock);
spin_lock(&mmu_context_lock);
get_mmu_context(next);
cpu_set(cpu, next->cpu_vm_mask);
spin_unlock(&next->page_table_lock);
spin_unlock(&mmu_context_lock);
/*
* Remember the pgd for the fault handlers. Keep a seperate copy of it

4
arch/cris/mm/ioremap.c
View file

@ -52,7 +52,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, prot);
@ -74,7 +74,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pud_t *pud;
pmd_t *pmd;
@ -94,7 +93,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

5
arch/frv/mm/dma-alloc.c
View file

@ -55,21 +55,18 @@ static int map_page(unsigned long va, unsigned long pa, pgprot_t prot)
pte_t *pte;
int err = -ENOMEM;
spin_lock(&init_mm.page_table_lock);
/* Use upper 10 bits of VA to index the first level map */
pge = pgd_offset_k(va);
pue = pud_offset(pge, va);
pme = pmd_offset(pue, va);
/* Use middle 10 bits of VA to index the second-level map */
pte = pte_alloc_kernel(&init_mm, pme, va);
pte = pte_alloc_kernel(pme, va);
if (pte != 0) {
err = 0;
set_pte(pte, mk_pte_phys(pa & PAGE_MASK, prot));
}
spin_unlock(&init_mm.page_table_lock);
return err;
}

4
arch/frv/mm/pgalloc.c
View file

@ -87,14 +87,14 @@ static inline void pgd_list_add(pgd_t *pgd)
if (pgd_list)
pgd_list->private = (unsigned long) &page->index;
pgd_list = page;
page->private = (unsigned long) &pgd_list;
set_page_private(page, (unsigned long)&pgd_list);
}
static inline void pgd_list_del(pgd_t *pgd)
{
struct page *next, **pprev, *page = virt_to_page(pgd);
next = (struct page *) page->index;
pprev = (struct page **) page->private;
pprev = (struct page **)page_private(page);
*pprev = next;
if (next)
next->private = (unsigned long) pprev;

17
arch/i386/kernel/vm86.c
View file

@ -134,17 +134,16 @@ struct pt_regs * fastcall save_v86_state(struct kernel_vm86_regs * regs)
return ret;
}
static void mark_screen_rdonly(struct task_struct * tsk)
static void mark_screen_rdonly(struct mm_struct *mm)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte, *mapped;
pte_t *pte;
spinlock_t *ptl;
int i;
preempt_disable();
spin_lock(&tsk->mm->page_table_lock);
pgd = pgd_offset(tsk->mm, 0xA0000);
pgd = pgd_offset(mm, 0xA0000);
if (pgd_none_or_clear_bad(pgd))
goto out;
pud = pud_offset(pgd, 0xA0000);
@ -153,16 +152,14 @@ static void mark_screen_rdonly(struct task_struct * tsk)
pmd = pmd_offset(pud, 0xA0000);
if (pmd_none_or_clear_bad(pmd))
goto out;
pte = mapped = pte_offset_map(pmd, 0xA0000);
pte = pte_offset_map_lock(mm, pmd, 0xA0000, &ptl);
for (i = 0; i < 32; i++) {
if (pte_present(*pte))
set_pte(pte, pte_wrprotect(*pte));
pte++;
}
pte_unmap(mapped);
pte_unmap_unlock(pte, ptl);
out:
spin_unlock(&tsk->mm->page_table_lock);
preempt_enable();
flush_tlb();
}
@ -306,7 +303,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
tsk->thread.screen_bitmap = info->screen_bitmap;
if (info->flags & VM86_SCREEN_BITMAP)
mark_screen_rdonly(tsk);
mark_screen_rdonly(tsk->mm);
__asm__ __volatile__(
"xorl %%eax,%%eax; movl %%eax,%%fs; movl %%eax,%%gs\n\t"
"movl %0,%%esp\n\t"

4
arch/i386/mm/discontig.c
View file

@ -98,7 +98,7 @@ unsigned long node_memmap_size_bytes(int nid, unsigned long start_pfn,
extern unsigned long find_max_low_pfn(void);
extern void find_max_pfn(void);
extern void one_highpage_init(struct page *, int, int);
extern void add_one_highpage_init(struct page *, int, int);
extern struct e820map e820;
extern unsigned long init_pg_tables_end;
@ -427,7 +427,7 @@ void __init set_highmem_pages_init(int bad_ppro)
if (!pfn_valid(node_pfn))
continue;
page = pfn_to_page(node_pfn);
one_highpage_init(page, node_pfn, bad_ppro);
add_one_highpage_init(page, node_pfn, bad_ppro);
}
}
totalram_pages += totalhigh_pages;

62
arch/i386/mm/init.c
View file

@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/efi.h>
#include <linux/memory_hotplug.h>
#include <asm/processor.h>
#include <asm/system.h>
@ -266,17 +267,46 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base)
pkmap_page_table = pte;
}
void __init one_highpage_init(struct page *page, int pfn, int bad_ppro)
void __devinit free_new_highpage(struct page *page)
{
set_page_count(page, 1);
__free_page(page);
totalhigh_pages++;
}
void __init add_one_highpage_init(struct page *page, int pfn, int bad_ppro)
{
if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn))) {
ClearPageReserved(page);
set_page_count(page, 1);
__free_page(page);
totalhigh_pages++;
free_new_highpage(page);
} else
SetPageReserved(page);
}
static int add_one_highpage_hotplug(struct page *page, unsigned long pfn)
{
free_new_highpage(page);
totalram_pages++;
#ifdef CONFIG_FLATMEM
max_mapnr = max(pfn, max_mapnr);
#endif
num_physpages++;
return 0;
}
/*
* Not currently handling the NUMA case.
* Assuming single node and all memory that
* has been added dynamically that would be
* onlined here is in HIGHMEM
*/
void online_page(struct page *page)
{
ClearPageReserved(page);
add_one_highpage_hotplug(page, page_to_pfn(page));
}
#ifdef CONFIG_NUMA
extern void set_highmem_pages_init(int);
#else
@ -284,7 +314,7 @@ static void __init set_highmem_pages_init(int bad_ppro)
{
int pfn;
for (pfn = highstart_pfn; pfn < highend_pfn; pfn++)
one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro);
add_one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro);
totalram_pages += totalhigh_pages;
}
#endif /* CONFIG_FLATMEM */
@ -615,6 +645,28 @@ void __init mem_init(void)
#endif
}
/*
* this is for the non-NUMA, single node SMP system case.
* Specifically, in the case of x86, we will always add
* memory to the highmem for now.
*/
#ifndef CONFIG_NEED_MULTIPLE_NODES
int add_memory(u64 start, u64 size)
{
struct pglist_data *pgdata = &contig_page_data;
struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
return __add_pages(zone, start_pfn, nr_pages);
}
int remove_memory(u64 start, u64 size)
{
return -EINVAL;
}
#endif
kmem_cache_t *pgd_cache;
kmem_cache_t *pmd_cache;

4
arch/i386/mm/ioremap.c
View file

@ -28,7 +28,7 @@ static int ioremap_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long pfn;
pfn = phys_addr >> PAGE_SHIFT;
pte = pte_alloc_kernel(&init_mm, pmd, addr);
pte = pte_alloc_kernel(pmd, addr);
if (!pte)
return -ENOMEM;
do {
@ -87,14 +87,12 @@ static int ioremap_page_range(unsigned long addr,
flush_cache_all();
phys_addr -= addr;
pgd = pgd_offset_k(addr);
spin_lock(&init_mm.page_table_lock);
do {
next = pgd_addr_end(addr, end);
err = ioremap_pud_range(pgd, addr, next, phys_addr+addr, flags);
if (err)
break;
} while (pgd++, addr = next, addr != end);
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return err;
}

11
arch/i386/mm/pgtable.c
View file

@ -31,11 +31,13 @@ void show_mem(void)
pg_data_t *pgdat;
unsigned long i;
struct page_state ps;
unsigned long flags;
printk(KERN_INFO "Mem-info:\n");
show_free_areas();
printk(KERN_INFO "Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pgdat_page_nr(pgdat, i);
total++;
@ -48,6 +50,7 @@ void show_mem(void)
else if (page_count(page))
shared += page_count(page) - 1;
}
pgdat_resize_unlock(pgdat, &flags);
}
printk(KERN_INFO "%d pages of RAM\n", total);
printk(KERN_INFO "%d pages of HIGHMEM\n", highmem);
@ -188,19 +191,19 @@ static inline void pgd_list_add(pgd_t *pgd)
struct page *page = virt_to_page(pgd);
page->index = (unsigned long)pgd_list;
if (pgd_list)
pgd_list->private = (unsigned long)&page->index;
set_page_private(pgd_list, (unsigned long)&page->index);
pgd_list = page;
page->private = (unsigned long)&pgd_list;
set_page_private(page, (unsigned long)&pgd_list);
}
static inline void pgd_list_del(pgd_t *pgd)
{
struct page *next, **pprev, *page = virt_to_page(pgd);
next = (struct page *)page->index;
pprev = (struct page **)page->private;
pprev = (struct page **)page_private(page);
*pprev = next;
if (next)
next->private = (unsigned long)pprev;
set_page_private(next, (unsigned long)pprev);
}
void pgd_ctor(void *pgd, kmem_cache_t *cache, unsigned long unused)

38
arch/i386/oprofile/backtrace.c
View file

@ -12,6 +12,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <asm/ptrace.h>
#include <asm/uaccess.h>
struct frame_head {
struct frame_head * ebp;
@ -21,26 +22,22 @@ struct frame_head {
static struct frame_head *
dump_backtrace(struct frame_head * head)
{
oprofile_add_trace(head->ret);
struct frame_head bufhead[2];
/* Also check accessibility of one struct frame_head beyond */
if (!access_ok(VERIFY_READ, head, sizeof(bufhead)))
return NULL;
if (__copy_from_user_inatomic(bufhead, head, sizeof(bufhead)))
return NULL;
oprofile_add_trace(bufhead[0].ret);
/* frame pointers should strictly progress back up the stack
* (towards higher addresses) */
if (head >= head->ebp)
if (head >= bufhead[0].ebp)
return NULL;
return head->ebp;
}
/* check that the page(s) containing the frame head are present */
static int pages_present(struct frame_head * head)
{
struct mm_struct * mm = current->mm;
/* FIXME: only necessary once per page */
if (!check_user_page_readable(mm, (unsigned long)head))
return 0;
return check_user_page_readable(mm, (unsigned long)(head + 1));
return bufhead[0].ebp;
}
/*
@ -97,15 +94,6 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth)
return;
}
#ifdef CONFIG_SMP
if (!spin_trylock(&current->mm->page_table_lock))
return;
#endif
while (depth-- && head && pages_present(head))
while (depth-- && head)
head = dump_backtrace(head);
#ifdef CONFIG_SMP
spin_unlock(&current->mm->page_table_lock);
#endif
}

3
arch/ia64/kernel/perfmon.c
View file

@ -2352,7 +2352,8 @@ pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned lon
insert_vm_struct(mm, vma);
mm->total_vm += size >> PAGE_SHIFT;
vm_stat_account(vma);
vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
vma_pages(vma));
up_write(&task->mm->mmap_sem);
/*

7
arch/ia64/mm/discontig.c
View file

@ -555,9 +555,13 @@ void show_mem(void)
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
unsigned long present = pgdat->node_present_pages;
unsigned long present;
unsigned long flags;
int shared = 0, cached = 0, reserved = 0;
printk("Node ID: %d\n", pgdat->node_id);
pgdat_resize_lock(pgdat, &flags);
present = pgdat->node_present_pages;
for(i = 0; i < pgdat->node_spanned_pages; i++) {
struct page *page;
if (pfn_valid(pgdat->node_start_pfn + i))
@ -571,6 +575,7 @@ void show_mem(void)
else if (page_count(page))
shared += page_count(page)-1;
}
pgdat_resize_unlock(pgdat, &flags);
total_present += present;
total_reserved += reserved;
total_cached += cached;

34
arch/ia64/mm/fault.c
View file

@ -19,32 +19,6 @@
extern void die (char *, struct pt_regs *, long);
/*
* This routine is analogous to expand_stack() but instead grows the
* register backing store (which grows towards higher addresses).
* Since the register backing store is access sequentially, we
* disallow growing the RBS by more than a page at a time. Note that
* the VM_GROWSUP flag can be set on any VM area but that's fine
* because the total process size is still limited by RLIMIT_STACK and
* RLIMIT_AS.
*/
static inline long
expand_backing_store (struct vm_area_struct *vma, unsigned long address)
{
unsigned long grow;
grow = PAGE_SIZE >> PAGE_SHIFT;
if (address - vma->vm_start > current->signal->rlim[RLIMIT_STACK].rlim_cur
|| (((vma->vm_mm->total_vm + grow) << PAGE_SHIFT) > current->signal->rlim[RLIMIT_AS].rlim_cur))
return -ENOMEM;
vma->vm_end += PAGE_SIZE;
vma->vm_mm->total_vm += grow;
if (vma->vm_flags & VM_LOCKED)
vma->vm_mm->locked_vm += grow;
__vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file, grow);
return 0;
}
/*
* Return TRUE if ADDRESS points at a page in the kernel's mapped segment
* (inside region 5, on ia64) and that page is present.
@ -185,7 +159,13 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
if (REGION_NUMBER(address) != REGION_NUMBER(vma->vm_start)
|| REGION_OFFSET(address) >= RGN_MAP_LIMIT)
goto bad_area;
if (expand_backing_store(vma, address))
/*
* Since the register backing store is accessed sequentially,
* we disallow growing it by more than a page at a time.
*/
if (address > vma->vm_end + PAGE_SIZE - sizeof(long))
goto bad_area;
if (expand_upwards(vma, address))
goto bad_area;
}
goto good_area;

13
arch/ia64/mm/init.c
View file

@ -158,7 +158,7 @@ ia64_init_addr_space (void)
vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
vma->vm_end = vma->vm_start + PAGE_SIZE;
vma->vm_page_prot = protection_map[VM_DATA_DEFAULT_FLAGS & 0x7];
vma->vm_flags = VM_DATA_DEFAULT_FLAGS | VM_GROWSUP;
vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT;
down_write(&current->mm->mmap_sem);
if (insert_vm_struct(current->mm, vma)) {
up_write(&current->mm->mmap_sem);
@ -275,26 +275,21 @@ put_kernel_page (struct page *page, unsigned long address, pgprot_t pgprot)
pgd = pgd_offset_k(address); /* note: this is NOT pgd_offset()! */
spin_lock(&init_mm.page_table_lock);
{
pud = pud_alloc(&init_mm, pgd, address);
if (!pud)
goto out;
pmd = pmd_alloc(&init_mm, pud, address);
if (!pmd)
goto out;
pte = pte_alloc_map(&init_mm, pmd, address);
pte = pte_alloc_kernel(pmd, address);
if (!pte)
goto out;
if (!pte_none(*pte)) {
pte_unmap(pte);
if (!pte_none(*pte))
goto out;
}
set_pte(pte, mk_pte(page, pgprot));
pte_unmap(pte);
}
out: spin_unlock(&init_mm.page_table_lock);
out:
/* no need for flush_tlb */
return page;
}

2
arch/ia64/mm/tlb.c
View file

@ -158,10 +158,12 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long
# ifdef CONFIG_SMP
platform_global_tlb_purge(mm, start, end, nbits);
# else
preempt_disable();
do {
ia64_ptcl(start, (nbits<<2));
start += (1UL << nbits);
} while (start < end);
preempt_enable();
# endif
ia64_srlz_i(); /* srlz.i implies srlz.d */

9
arch/m32r/mm/init.c
View file

@ -48,6 +48,8 @@ void show_mem(void)
show_free_areas();
printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
unsigned long flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pgdat_page_nr(pgdat, i);
total++;
@ -60,6 +62,7 @@ void show_mem(void)
else if (page_count(page))
shared += page_count(page) - 1;
}
pgdat_resize_unlock(pgdat, &flags);
}
printk("%d pages of RAM\n", total);
printk("%d pages of HIGHMEM\n",highmem);
@ -150,10 +153,14 @@ int __init reservedpages_count(void)
int reservedpages, nid, i;
reservedpages = 0;
for_each_online_node(nid)
for_each_online_node(nid) {
unsigned long flags;
pgdat_resize_lock(NODE_DATA(nid), &flags);
for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
if (PageReserved(nid_page_nr(nid, i)))
reservedpages++;
pgdat_resize_unlock(NODE_DATA(nid), &flags);
}
return reservedpages;
}

4
arch/m32r/mm/ioremap.c
View file

@ -67,7 +67,7 @@ remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -90,7 +90,6 @@ remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd;
pmd = pmd_alloc(&init_mm, dir, address);
@ -104,7 +103,6 @@ remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

24
arch/m68k/Kconfig
View file

@ -388,33 +388,11 @@ config AMIGA_PCMCIA
Include support in the kernel for pcmcia on Amiga 1200 and Amiga
600. If you intend to use pcmcia cards say Y; otherwise say N.
config STRAM_SWAP
bool "Support for ST-RAM as swap space"
depends on ATARI && BROKEN
---help---
Some Atari 68k machines (including the 520STF and 1020STE) divide
their addressable memory into ST and TT sections. The TT section
(up to 512MB) is the main memory; the ST section (up to 4MB) is
accessible to the built-in graphics board, runs slower, and is
present mainly for backward compatibility with older machines.
This enables support for using (parts of) ST-RAM as swap space,
instead of as normal system memory. This can first enhance system
performance if you have lots of alternate RAM (compared to the size
of ST-RAM), because executable code always will reside in faster
memory. ST-RAM will remain as ultra-fast swap space. On the other
hand, it allows much improved dynamic allocations of ST-RAM buffers
for device driver modules (e.g. floppy, ACSI, SLM printer, DMA
sound). The probability that such allocations at module load time
fail is drastically reduced.
config STRAM_PROC
bool "ST-RAM statistics in /proc"
depends on ATARI
help
Say Y here to report ST-RAM usage statistics in /proc/stram. See
the help for CONFIG_STRAM_SWAP for discussion of ST-RAM and its
uses.
Say Y here to report ST-RAM usage statistics in /proc/stram.
config HEARTBEAT
bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40

918
arch/m68k/atari/stram.c
View file

File diff suppressed because it is too large Load diff

2
arch/m68k/mm/kmap.c
View file

@ -201,7 +201,7 @@ void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
virtaddr += PTRTREESIZE;
size -= PTRTREESIZE;
} else {
pte_dir = pte_alloc_kernel(&init_mm, pmd_dir, virtaddr);
pte_dir = pte_alloc_kernel(pmd_dir, virtaddr);
if (!pte_dir) {
printk("ioremap: no mem for pte_dir\n");
return NULL;

2
arch/m68k/sun3x/dvma.c
View file

@ -116,7 +116,7 @@ inline int dvma_map_cpu(unsigned long kaddr,
pte_t *pte;
unsigned long end3;
if((pte = pte_alloc_kernel(&init_mm, pmd, vaddr)) == NULL) {
if((pte = pte_alloc_kernel(pmd, vaddr)) == NULL) {
ret = -ENOMEM;
goto out;
}

1
arch/mips/kernel/irixelf.c
View file

@ -697,7 +697,6 @@ static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs)
/* Do this so that we can load the interpreter, if need be. We will
* change some of these later.
*/
set_mm_counter(current->mm, rss, 0);
setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
current->mm->start_stack = bprm->p;

4
arch/mips/mm/ioremap.c
View file

@ -55,7 +55,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address,
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -77,7 +77,6 @@ static int remap_area_pages(unsigned long address, phys_t phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pud_t *pud;
pmd_t *pmd;
@ -96,7 +95,6 @@ static int remap_area_pages(unsigned long address, phys_t phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

24
arch/parisc/kernel/cache.c
View file

@ -270,7 +270,6 @@ void flush_dcache_page(struct page *page)
unsigned long offset;
unsigned long addr;
pgoff_t pgoff;
pte_t *pte;
unsigned long pfn = page_to_pfn(page);
@ -301,21 +300,16 @@ void flush_dcache_page(struct page *page)
* taking a page fault if the pte doesn't exist.
* This is just for speed. If the page translation
* isn't there, there's no point exciting the
* nadtlb handler into a nullification frenzy */
if(!(pte = translation_exists(mpnt, addr)))
continue;
/* make sure we really have this page: the private
* nadtlb handler into a nullification frenzy.
*
* Make sure we really have this page: the private
* mappings may cover this area but have COW'd this
* particular page */
if(pte_pfn(*pte) != pfn)
continue;
__flush_cache_page(mpnt, addr);
break;
* particular page.
*/
if (translation_exists(mpnt, addr, pfn)) {
__flush_cache_page(mpnt, addr);
break;
}
}
flush_dcache_mmap_unlock(mapping);
}

2
arch/parisc/kernel/pci-dma.c
View file

@ -114,7 +114,7 @@ static inline int map_pmd_uncached(pmd_t * pmd, unsigned long vaddr,
if (end > PGDIR_SIZE)
end = PGDIR_SIZE;
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, vaddr);
pte_t * pte = pte_alloc_kernel(pmd, vaddr);
if (!pte)
return -ENOMEM;
if (map_pte_uncached(pte, orig_vaddr, end - vaddr, paddr_ptr))

3
arch/parisc/mm/init.c
View file

@ -505,7 +505,9 @@ void show_mem(void)
for (j = node_start_pfn(i); j < node_end_pfn(i); j++) {
struct page *p;
unsigned long flags;
pgdat_resize_lock(NODE_DATA(i), &flags);
p = nid_page_nr(i, j) - node_start_pfn(i);
total++;
@ -517,6 +519,7 @@ void show_mem(void)
free++;
else
shared += page_count(p) - 1;
pgdat_resize_unlock(NODE_DATA(i), &flags);
}
}
#endif

6
arch/parisc/mm/ioremap.c
View file

@ -52,7 +52,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(NULL, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -75,10 +75,9 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd;
pmd = pmd_alloc(dir, address);
pmd = pmd_alloc(&init_mm, dir, address);
error = -ENOMEM;
if (!pmd)
break;
@ -89,7 +88,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

6
arch/ppc/kernel/dma-mapping.c
View file

@ -335,8 +335,6 @@ static int __init dma_alloc_init(void)
pte_t *pte;
int ret = 0;
spin_lock(&init_mm.page_table_lock);
do {
pgd = pgd_offset(&init_mm, CONSISTENT_BASE);
pmd = pmd_alloc(&init_mm, pgd, CONSISTENT_BASE);
@ -347,7 +345,7 @@ static int __init dma_alloc_init(void)
}
WARN_ON(!pmd_none(*pmd));
pte = pte_alloc_kernel(&init_mm, pmd, CONSISTENT_BASE);
pte = pte_alloc_kernel(pmd, CONSISTENT_BASE);
if (!pte) {
printk(KERN_ERR "%s: no pte tables\n", __func__);
ret = -ENOMEM;
@ -357,8 +355,6 @@ static int __init dma_alloc_init(void)
consistent_pte = pte;
} while (0);
spin_unlock(&init_mm.page_table_lock);
return ret;
}

4
arch/ppc/mm/4xx_mmu.c
View file

@ -110,13 +110,11 @@ unsigned long __init mmu_mapin_ram(void)
pmd_t *pmdp;
unsigned long val = p | _PMD_SIZE_16M | _PAGE_HWEXEC | _PAGE_HWWRITE;
spin_lock(&init_mm.page_table_lock);
pmdp = pmd_offset(pgd_offset_k(v), v);
pmd_val(*pmdp++) = val;
pmd_val(*pmdp++) = val;
pmd_val(*pmdp++) = val;
pmd_val(*pmdp++) = val;
spin_unlock(&init_mm.page_table_lock);
v += LARGE_PAGE_SIZE_16M;
p += LARGE_PAGE_SIZE_16M;
@ -127,10 +125,8 @@ unsigned long __init mmu_mapin_ram(void)
pmd_t *pmdp;
unsigned long val = p | _PMD_SIZE_4M | _PAGE_HWEXEC | _PAGE_HWWRITE;
spin_lock(&init_mm.page_table_lock);
pmdp = pmd_offset(pgd_offset_k(v), v);
pmd_val(*pmdp) = val;
spin_unlock(&init_mm.page_table_lock);
v += LARGE_PAGE_SIZE_4M;
p += LARGE_PAGE_SIZE_4M;

4
arch/ppc/mm/pgtable.c
View file

@ -280,18 +280,16 @@ map_page(unsigned long va, phys_addr_t pa, int flags)
pte_t *pg;
int err = -ENOMEM;
spin_lock(&init_mm.page_table_lock);
/* Use upper 10 bits of VA to index the first level map */
pd = pmd_offset(pgd_offset_k(va), va);
/* Use middle 10 bits of VA to index the second-level map */
pg = pte_alloc_kernel(&init_mm, pd, va);
pg = pte_alloc_kernel(pd, va);
if (pg != 0) {
err = 0;
set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags)));
if (mem_init_done)
flush_HPTE(0, va, pmd_val(*pd));
}
spin_unlock(&init_mm.page_table_lock);
return err;
}

12
arch/ppc64/kernel/vdso.c
View file

@ -176,13 +176,13 @@ static struct page * vdso_vma_nopage(struct vm_area_struct * vma,
return NOPAGE_SIGBUS;
/*
* Last page is systemcfg, special handling here, no get_page() a
* this is a reserved page
* Last page is systemcfg.
*/
if ((vma->vm_end - address) <= PAGE_SIZE)
return virt_to_page(systemcfg);
pg = virt_to_page(systemcfg);
else
pg = virt_to_page(vbase + offset);
pg = virt_to_page(vbase + offset);
get_page(pg);
DBG(" ->page count: %d\n", page_count(pg));
@ -259,7 +259,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack)
* gettimeofday will be totally dead. It's fine to use that for setting
* breakpoints in the vDSO code pages though
*/
vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_RESERVED;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
vma->vm_ops = &vdso_vmops;
@ -603,6 +603,8 @@ void __init vdso_init(void)
ClearPageReserved(pg);
get_page(pg);
}
get_page(virt_to_page(systemcfg));
}
int in_gate_area_no_task(unsigned long addr)

5
arch/ppc64/mm/imalloc.c
View file

@ -300,12 +300,7 @@ void im_free(void * addr)
for (p = &imlist ; (tmp = *p) ; p = &tmp->next) {
if (tmp->addr == addr) {
*p = tmp->next;
/* XXX: do we need the lock? */
spin_lock(&init_mm.page_table_lock);
unmap_vm_area(tmp);
spin_unlock(&init_mm.page_table_lock);
kfree(tmp);
up(&imlist_sem);
return;

87
arch/ppc64/mm/init.c
View file

@ -104,6 +104,8 @@ void show_mem(void)
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
unsigned long flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; i++) {
page = pgdat_page_nr(pgdat, i);
total++;
@ -114,6 +116,7 @@ void show_mem(void)
else if (page_count(page))
shared += page_count(page) - 1;
}
pgdat_resize_unlock(pgdat, &flags);
}
printk("%ld pages of RAM\n", total);
printk("%ld reserved pages\n", reserved);
@ -155,7 +158,6 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags)
unsigned long vsid;
if (mem_init_done) {
spin_lock(&init_mm.page_table_lock);
pgdp = pgd_offset_k(ea);
pudp = pud_alloc(&init_mm, pgdp, ea);
if (!pudp)
@ -163,12 +165,11 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags)
pmdp = pmd_alloc(&init_mm, pudp, ea);
if (!pmdp)
return -ENOMEM;
ptep = pte_alloc_kernel(&init_mm, pmdp, ea);
ptep = pte_alloc_kernel(pmdp, ea);
if (!ptep)
return -ENOMEM;
set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT,
__pgprot(flags)));
spin_unlock(&init_mm.page_table_lock);
} else {
unsigned long va, vpn, hash, hpteg;
@ -649,11 +650,14 @@ void __init mem_init(void)
#endif
for_each_pgdat(pgdat) {
unsigned long flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; i++) {
page = pgdat_page_nr(pgdat, i);
if (PageReserved(page))
reservedpages++;
}
pgdat_resize_unlock(pgdat, &flags);
}
codesize = (unsigned long)&_etext - (unsigned long)&_stext;
@ -867,3 +871,80 @@ pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr,
return vma_prot;
}
EXPORT_SYMBOL(phys_mem_access_prot);
#ifdef CONFIG_MEMORY_HOTPLUG
void online_page(struct page *page)
{
ClearPageReserved(page);
free_cold_page(page);
totalram_pages++;
num_physpages++;
}
/*
* This works only for the non-NUMA case. Later, we'll need a lookup
* to convert from real physical addresses to nid, that doesn't use
* pfn_to_nid().
*/
int __devinit add_memory(u64 start, u64 size)
{
struct pglist_data *pgdata = NODE_DATA(0);
struct zone *zone;
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
/* this should work for most non-highmem platforms */
zone = pgdata->node_zones;
return __add_pages(zone, start_pfn, nr_pages);
return 0;
}
/*
* First pass at this code will check to determine if the remove
* request is within the RMO. Do not allow removal within the RMO.
*/
int __devinit remove_memory(u64 start, u64 size)
{
struct zone *zone;
unsigned long start_pfn, end_pfn, nr_pages;
start_pfn = start >> PAGE_SHIFT;
nr_pages = size >> PAGE_SHIFT;
end_pfn = start_pfn + nr_pages;
printk("%s(): Attempting to remove memoy in range "
"%lx to %lx\n", __func__, start, start+size);
/*
* check for range within RMO
*/
zone = page_zone(pfn_to_page(start_pfn));
printk("%s(): memory will be removed from "
"the %s zone\n", __func__, zone->name);
/*
* not handling removing memory ranges that
* overlap multiple zones yet
*/
if (end_pfn > (zone->zone_start_pfn + zone->spanned_pages))
goto overlap;
/* make sure it is NOT in RMO */
if ((start < lmb.rmo_size) || ((start+size) < lmb.rmo_size)) {
printk("%s(): range to be removed must NOT be in RMO!\n",
__func__);
goto in_rmo;
}
return __remove_pages(zone, start_pfn, nr_pages);
overlap:
printk("%s(): memory range to be removed overlaps "
"multiple zones!!!\n", __func__);
in_rmo:
return -1;
}
#endif /* CONFIG_MEMORY_HOTPLUG */

4
arch/s390/mm/ioremap.c
View file

@ -58,7 +58,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -80,7 +80,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd;
pmd = pmd_alloc(&init_mm, dir, address);
@ -94,7 +93,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return 0;
}

40
arch/sh/mm/fault.c
View file

@ -194,10 +194,13 @@ asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
unsigned long address)
{
unsigned long addrmax = P4SEG;
pgd_t *dir;
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
pte_t entry;
struct mm_struct *mm;
spinlock_t *ptl;
int ret = 1;
#ifdef CONFIG_SH_KGDB
if (kgdb_nofault && kgdb_bus_err_hook)
@ -208,28 +211,28 @@ asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
addrmax = P4SEG_STORE_QUE + 0x04000000;
#endif
if (address >= P3SEG && address < addrmax)
dir = pgd_offset_k(address);
else if (address >= TASK_SIZE)
if (address >= P3SEG && address < addrmax) {
pgd = pgd_offset_k(address);
mm = NULL;
} else if (address >= TASK_SIZE)
return 1;
else if (!current->mm)
else if (!(mm = current->mm))
return 1;
else
dir = pgd_offset(current->mm, address);
pgd = pgd_offset(mm, address);
pmd = pmd_offset(dir, address);
if (pmd_none(*pmd))
pmd = pmd_offset(pgd, address);
if (pmd_none_or_clear_bad(pmd))
return 1;
if (pmd_bad(*pmd)) {
pmd_ERROR(*pmd);
pmd_clear(pmd);
return 1;
}
pte = pte_offset_kernel(pmd, address);
if (mm)
pte = pte_offset_map_lock(mm, pmd, address, &ptl);
else
pte = pte_offset_kernel(pmd, address);
entry = *pte;
if (pte_none(entry) || pte_not_present(entry)
|| (writeaccess && !pte_write(entry)))
return 1;
goto unlock;
if (writeaccess)
entry = pte_mkdirty(entry);
@ -251,8 +254,11 @@ asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
set_pte(pte, entry);
update_mmu_cache(NULL, address, entry);
return 0;
ret = 0;
unlock:
if (mm)
pte_unmap_unlock(pte, ptl);
return ret;
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)

2
arch/sh/mm/hugetlbpage.c
View file

@ -54,8 +54,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return pte;
}
#define mk_pte_huge(entry) do { pte_val(entry) |= _PAGE_SZHUGE; } while (0)
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{

4
arch/sh/mm/ioremap.c
View file

@ -57,7 +57,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address,
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -79,7 +79,6 @@ int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd;
pmd = pmd_alloc(&init_mm, dir, address);
@ -93,7 +92,6 @@ int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

62
arch/sh64/mm/cache.c
View file

@ -584,32 +584,36 @@ static void sh64_dcache_purge_phy_page(unsigned long paddr)
}
}
static void sh64_dcache_purge_user_page(struct mm_struct *mm, unsigned long eaddr)
static void sh64_dcache_purge_user_pages(struct mm_struct *mm,
unsigned long addr, unsigned long end)
{
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
pte_t entry;
spinlock_t *ptl;
unsigned long paddr;
/* NOTE : all the callers of this have mm->page_table_lock held, so the
following page table traversal is safe even on SMP/pre-emptible. */
if (!mm)
return; /* No way to find physical address of page */
if (!mm) return; /* No way to find physical address of page */
pgd = pgd_offset(mm, eaddr);
if (pgd_bad(*pgd)) return;
pgd = pgd_offset(mm, addr);
if (pgd_bad(*pgd))
return;
pmd = pmd_offset(pgd, eaddr);
if (pmd_none(*pmd) || pmd_bad(*pmd)) return;
pte = pte_offset_kernel(pmd, eaddr);
entry = *pte;
if (pte_none(entry) || !pte_present(entry)) return;
paddr = pte_val(entry) & PAGE_MASK;
sh64_dcache_purge_coloured_phy_page(paddr, eaddr);
pmd = pmd_offset(pgd, addr);
if (pmd_none(*pmd) || pmd_bad(*pmd))
return;
pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
do {
entry = *pte;
if (pte_none(entry) || !pte_present(entry))
continue;
paddr = pte_val(entry) & PAGE_MASK;
sh64_dcache_purge_coloured_phy_page(paddr, addr);
} while (pte++, addr += PAGE_SIZE, addr != end);
pte_unmap_unlock(pte - 1, ptl);
}
/****************************************************************************/
@ -668,7 +672,7 @@ static void sh64_dcache_purge_user_range(struct mm_struct *mm,
int n_pages;
n_pages = ((end - start) >> PAGE_SHIFT);
if (n_pages >= 64) {
if (n_pages >= 64 || ((start ^ (end - 1)) & PMD_MASK)) {
#if 1
sh64_dcache_purge_all();
#else
@ -707,20 +711,10 @@ static void sh64_dcache_purge_user_range(struct mm_struct *mm,
}
#endif
} else {
/* 'Small' range */
unsigned long aligned_start;
unsigned long eaddr;
unsigned long last_page_start;
aligned_start = start & PAGE_MASK;
/* 'end' is 1 byte beyond the end of the range */
last_page_start = (end - 1) & PAGE_MASK;
eaddr = aligned_start;
while (eaddr <= last_page_start) {
sh64_dcache_purge_user_page(mm, eaddr);
eaddr += PAGE_SIZE;
}
/* Small range, covered by a single page table page */
start &= PAGE_MASK; /* should already be so */
end = PAGE_ALIGN(end); /* should already be so */
sh64_dcache_purge_user_pages(mm, start, end);
}
return;
}
@ -880,9 +874,7 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
addresses from the user address space specified by mm, after writing
back any dirty data.
Note(1), 'end' is 1 byte beyond the end of the range to flush.
Note(2), this is called with mm->page_table_lock held.*/
Note, 'end' is 1 byte beyond the end of the range to flush. */
sh64_dcache_purge_user_range(mm, start, end);
sh64_icache_inv_user_page_range(mm, start, end);
@ -898,7 +890,7 @@ void flush_cache_page(struct vm_area_struct *vma, unsigned long eaddr, unsigned
the I-cache must be searched too in case the page in question is
both writable and being executed from (e.g. stack trampolines.)
Note(1), this is called with mm->page_table_lock held.
Note, this is called with pte lock held.
*/
sh64_dcache_purge_phy_page(pfn << PAGE_SHIFT);

188
arch/sh64/mm/hugetlbpage.c
View file

@ -54,41 +54,31 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return pte;
}
#define mk_pte_huge(entry) do { pte_val(entry) |= _PAGE_SZHUGE; } while (0)
static void set_huge_pte(struct mm_struct *mm, struct vm_area_struct *vma,
struct page *page, pte_t * page_table, int write_access)
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{
unsigned long i;
pte_t entry;
add_mm_counter(mm, rss, HPAGE_SIZE / PAGE_SIZE);
if (write_access)
entry = pte_mkwrite(pte_mkdirty(mk_pte(page,
vma->vm_page_prot)));
else
entry = pte_wrprotect(mk_pte(page, vma->vm_page_prot));
entry = pte_mkyoung(entry);
mk_pte_huge(entry);
int i;
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
set_pte(page_table, entry);
page_table++;
set_pte_at(mm, addr, ptep, entry);
ptep++;
addr += PAGE_SIZE;
pte_val(entry) += PAGE_SIZE;
}
}
pte_t huge_ptep_get_and_clear(pte_t *ptep)
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
pte_t entry;
int i;
entry = *ptep;
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
pte_clear(pte);
pte++;
pte_clear(mm, addr, ptep);
addr += PAGE_SIZE;
ptep++;
}
return entry;
@ -106,79 +96,6 @@ int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
return 0;
}
int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
struct vm_area_struct *vma)
{
pte_t *src_pte, *dst_pte, entry;
struct page *ptepage;
unsigned long addr = vma->vm_start;
unsigned long end = vma->vm_end;
int i;
while (addr < end) {
dst_pte = huge_pte_alloc(dst, addr);
if (!dst_pte)
goto nomem;
src_pte = huge_pte_offset(src, addr);
BUG_ON(!src_pte || pte_none(*src_pte));
entry = *src_pte;
ptepage = pte_page(entry);
get_page(ptepage);
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
set_pte(dst_pte, entry);
pte_val(entry) += PAGE_SIZE;
dst_pte++;
}
add_mm_counter(dst, rss, HPAGE_SIZE / PAGE_SIZE);
addr += HPAGE_SIZE;
}
return 0;
nomem:
return -ENOMEM;
}
int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
struct page **pages, struct vm_area_struct **vmas,
unsigned long *position, int *length, int i)
{
unsigned long vaddr = *position;
int remainder = *length;
WARN_ON(!is_vm_hugetlb_page(vma));
while (vaddr < vma->vm_end && remainder) {
if (pages) {
pte_t *pte;
struct page *page;
pte = huge_pte_offset(mm, vaddr);
/* hugetlb should be locked, and hence, prefaulted */
BUG_ON(!pte || pte_none(*pte));
page = pte_page(*pte);
WARN_ON(!PageCompound(page));
get_page(page);
pages[i] = page;
}
if (vmas)
vmas[i] = vma;
vaddr += PAGE_SIZE;
--remainder;
++i;
}
*length = remainder;
*position = vaddr;
return i;
}
struct page *follow_huge_addr(struct mm_struct *mm,
unsigned long address, int write)
{
@ -195,84 +112,3 @@ struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
{
return NULL;
}
void unmap_hugepage_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
unsigned long address;
pte_t *pte;
struct page *page;
int i;
BUG_ON(start & (HPAGE_SIZE - 1));
BUG_ON(end & (HPAGE_SIZE - 1));
for (address = start; address < end; address += HPAGE_SIZE) {
pte = huge_pte_offset(mm, address);
BUG_ON(!pte);
if (pte_none(*pte))
continue;
page = pte_page(*pte);
put_page(page);
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
pte_clear(mm, address+(i*PAGE_SIZE), pte);
pte++;
}
}
add_mm_counter(mm, rss, -((end - start) >> PAGE_SHIFT));
flush_tlb_range(vma, start, end);
}
int hugetlb_prefault(struct address_space *mapping, struct vm_area_struct *vma)
{
struct mm_struct *mm = current->mm;
unsigned long addr;
int ret = 0;
BUG_ON(vma->vm_start & ~HPAGE_MASK);
BUG_ON(vma->vm_end & ~HPAGE_MASK);
spin_lock(&mm->page_table_lock);
for (addr = vma->vm_start; addr < vma->vm_end; addr += HPAGE_SIZE) {
unsigned long idx;
pte_t *pte = huge_pte_alloc(mm, addr);
struct page *page;
if (!pte) {
ret = -ENOMEM;
goto out;
}
if (!pte_none(*pte))
continue;
idx = ((addr - vma->vm_start) >> HPAGE_SHIFT)
+ (vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT));
page = find_get_page(mapping, idx);
if (!page) {
/* charge the fs quota first */
if (hugetlb_get_quota(mapping)) {
ret = -ENOMEM;
goto out;
}
page = alloc_huge_page();
if (!page) {
hugetlb_put_quota(mapping);
ret = -ENOMEM;
goto out;
}
ret = add_to_page_cache(page, mapping, idx, GFP_ATOMIC);
if (! ret) {
unlock_page(page);
} else {
hugetlb_put_quota(mapping);
free_huge_page(page);
goto out;
}
}
set_huge_pte(mm, vma, page, pte, vma->vm_flags & VM_WRITE);
}
out:
spin_unlock(&mm->page_table_lock);
return ret;
}

4
arch/sh64/mm/ioremap.c
View file

@ -79,7 +79,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -101,7 +101,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pmd_t *pmd = pmd_alloc(&init_mm, dir, address);
error = -ENOMEM;
@ -115,7 +114,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return 0;
}

7
arch/sparc/mm/generic.c
View file

@ -73,14 +73,16 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
int space = GET_IOSPACE(pfn);
unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
/* See comment in mm/memory.c remap_pfn_range */
vma->vm_flags |= VM_IO | VM_RESERVED;
prot = __pgprot(pg_iobits);
offset -= from;
dir = pgd_offset(mm, from);
flush_cache_range(vma, beg, end);
spin_lock(&mm->page_table_lock);
while (from < end) {
pmd_t *pmd = pmd_alloc(current->mm, dir, from);
pmd_t *pmd = pmd_alloc(mm, dir, from);
error = -ENOMEM;
if (!pmd)
break;
@ -90,7 +92,6 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
from = (from + PGDIR_SIZE) & PGDIR_MASK;
dir++;
}
spin_unlock(&mm->page_table_lock);
flush_tlb_range(vma, beg, end);
return error;

1
arch/sparc64/kernel/binfmt_aout32.c
View file

@ -241,7 +241,6 @@ static int load_aout32_binary(struct linux_binprm * bprm, struct pt_regs * regs)
current->mm->brk = ex.a_bss +
(current->mm->start_brk = N_BSSADDR(ex));
set_mm_counter(current->mm, rss, 0);
current->mm->mmap = NULL;
compute_creds(bprm);
current->flags &= ~PF_FORKNOEXEC;

9
arch/sparc64/mm/generic.c
View file

@ -127,14 +127,16 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
int space = GET_IOSPACE(pfn);
unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
/* See comment in mm/memory.c remap_pfn_range */
vma->vm_flags |= VM_IO | VM_RESERVED;
prot = __pgprot(pg_iobits);
offset -= from;
dir = pgd_offset(mm, from);
flush_cache_range(vma, beg, end);
spin_lock(&mm->page_table_lock);
while (from < end) {
pud_t *pud = pud_alloc(current->mm, dir, from);
pud_t *pud = pud_alloc(mm, dir, from);
error = -ENOMEM;
if (!pud)
break;
@ -144,8 +146,7 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
from = (from + PGDIR_SIZE) & PGDIR_MASK;
dir++;
}
flush_tlb_range(vma, beg, end);
spin_unlock(&mm->page_table_lock);
flush_tlb_range(vma, beg, end);
return error;
}

7
arch/sparc64/mm/tlb.c
View file

@ -18,8 +18,7 @@
/* Heavily inspired by the ppc64 code. */
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers) =
{ NULL, 0, 0, 0, 0, 0, { 0 }, { NULL }, };
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers) = { 0, };
void flush_tlb_pending(void)
{
@ -72,7 +71,7 @@ void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t
no_cache_flush:
if (mp->tlb_frozen)
if (mp->fullmm)
return;
nr = mp->tlb_nr;
@ -97,7 +96,7 @@ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long
unsigned long nr = mp->tlb_nr;
long s = start, e = end, vpte_base;
if (mp->tlb_frozen)
if (mp->fullmm)
return;
/* If start is greater than end, that is a real problem. */

1
arch/um/include/tlb.h
View file

@ -34,7 +34,6 @@ struct host_vm_op {
} u;
};
extern void mprotect_kernel_vm(int w);
extern void force_flush_all(void);
extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
unsigned long end_addr, int force,

8
arch/um/kernel/process_kern.c
View file

@ -222,6 +222,7 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pte_t ptent;
if(task->mm == NULL)
return(ERR_PTR(-EINVAL));
@ -238,12 +239,13 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
return(ERR_PTR(-EINVAL));
pte = pte_offset_kernel(pmd, addr);
if(!pte_present(*pte))
ptent = *pte;
if(!pte_present(ptent))
return(ERR_PTR(-EINVAL));
if(pte_out != NULL)
*pte_out = *pte;
return((void *) (pte_val(*pte) & PAGE_MASK) + (addr & ~PAGE_MASK));
*pte_out = ptent;
return((void *) (pte_val(ptent) & PAGE_MASK) + (addr & ~PAGE_MASK));
}
char *current_cmd(void)

4
arch/um/kernel/skas/mmu.c
View file

@ -28,7 +28,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
pmd_t *pmd;
pte_t *pte;
spin_lock(&mm->page_table_lock);
pgd = pgd_offset(mm, proc);
pud = pud_alloc(mm, pgd, proc);
if (!pud)
@ -63,7 +62,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
*pte = mk_pte(virt_to_page(kernel), __pgprot(_PAGE_PRESENT));
*pte = pte_mkexec(*pte);
*pte = pte_wrprotect(*pte);
spin_unlock(&mm->page_table_lock);
return(0);
out_pmd:
@ -71,7 +69,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
out_pte:
pmd_free(pmd);
out:
spin_unlock(&mm->page_table_lock);
return(-ENOMEM);
}
@ -147,6 +144,7 @@ void destroy_context_skas(struct mm_struct *mm)
if(!proc_mm || !ptrace_faultinfo){
free_page(mmu->id.stack);
pte_lock_deinit(virt_to_page(mmu->last_page_table));
pte_free_kernel((pte_t *) mmu->last_page_table);
dec_page_state(nr_page_table_pages);
#ifdef CONFIG_3_LEVEL_PGTABLES

36
arch/um/kernel/tt/tlb.c
View file

@ -74,42 +74,6 @@ void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end)
atomic_inc(&vmchange_seq);
}
static void protect_vm_page(unsigned long addr, int w, int must_succeed)
{
int err;
err = protect_memory(addr, PAGE_SIZE, 1, w, 1, must_succeed);
if(err == 0) return;
else if((err == -EFAULT) || (err == -ENOMEM)){
flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
protect_vm_page(addr, w, 1);
}
else panic("protect_vm_page : protect failed, errno = %d\n", err);
}
void mprotect_kernel_vm(int w)
{
struct mm_struct *mm;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned long addr;
mm = &init_mm;
for(addr = start_vm; addr < end_vm;){
pgd = pgd_offset(mm, addr);
pud = pud_offset(pgd, addr);
pmd = pmd_offset(pud, addr);
if(pmd_present(*pmd)){
pte = pte_offset_kernel(pmd, addr);
if(pte_present(*pte)) protect_vm_page(addr, w, 0);
addr += PAGE_SIZE;
}
else addr += PMD_SIZE;
}
}
void flush_tlb_kernel_vm_tt(void)
{
flush_tlb_kernel_range(start_vm, end_vm);

1
arch/x86_64/ia32/ia32_aout.c
View file

@ -314,7 +314,6 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
current->mm->free_area_cache = TASK_UNMAPPED_BASE;
current->mm->cached_hole_size = 0;
set_mm_counter(current->mm, rss, 0);
current->mm->mmap = NULL;
compute_creds(bprm);
current->flags &= ~PF_FORKNOEXEC;

4
arch/x86_64/mm/ioremap.c
View file

@ -60,7 +60,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@ -105,7 +105,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&init_mm.page_table_lock);
do {
pud_t *pud;
pud = pud_alloc(&init_mm, pgd, address);
@ -119,7 +118,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
address = (address + PGDIR_SIZE) & PGDIR_MASK;
pgd++;
} while (address && (address < end));
spin_unlock(&init_mm.page_table_lock);
flush_tlb_all();
return error;
}

5
crypto/api.c
View file

@ -215,7 +215,10 @@ int crypto_register_alg(struct crypto_alg *alg)
if (alg->cra_alignmask & (alg->cra_alignmask + 1))
return -EINVAL;
if (alg->cra_alignmask > PAGE_SIZE)
if (alg->cra_alignmask & alg->cra_blocksize)
return -EINVAL;
if (alg->cra_blocksize > PAGE_SIZE)
return -EINVAL;
down_write(&crypto_alg_sem);

19
crypto/hmac.c
View file

@ -18,18 +18,15 @@
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/slab.h>
#include <asm/scatterlist.h>
#include <linux/scatterlist.h>
#include "internal.h"
static void hash_key(struct crypto_tfm *tfm, u8 *key, unsigned int keylen)
{
struct scatterlist tmp;
tmp.page = virt_to_page(key);
tmp.offset = offset_in_page(key);
tmp.length = keylen;
sg_set_buf(&tmp, key, keylen);
crypto_digest_digest(tfm, &tmp, 1, key);
}
int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
@ -69,9 +66,7 @@ void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen)
for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
ipad[i] ^= 0x36;
tmp.page = virt_to_page(ipad);
tmp.offset = offset_in_page(ipad);
tmp.length = crypto_tfm_alg_blocksize(tfm);
sg_set_buf(&tmp, ipad, crypto_tfm_alg_blocksize(tfm));
crypto_digest_init(tfm);
crypto_digest_update(tfm, &tmp, 1);
@ -103,16 +98,12 @@ void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
opad[i] ^= 0x5c;
tmp.page = virt_to_page(opad);
tmp.offset = offset_in_page(opad);
tmp.length = crypto_tfm_alg_blocksize(tfm);
sg_set_buf(&tmp, opad, crypto_tfm_alg_blocksize(tfm));
crypto_digest_init(tfm);
crypto_digest_update(tfm, &tmp, 1);
tmp.page = virt_to_page(out);
tmp.offset = offset_in_page(out);
tmp.length = crypto_tfm_alg_digestsize(tfm);
sg_set_buf(&tmp, out, crypto_tfm_alg_digestsize(tfm));
crypto_digest_update(tfm, &tmp, 1);
crypto_digest_final(tfm, out);

56
crypto/tcrypt.c
View file

@ -21,7 +21,7 @@
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <asm/scatterlist.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
#include <linux/crypto.h>
#include <linux/highmem.h>
@ -86,7 +86,6 @@ static void hexdump(unsigned char *buf, unsigned int len)
static void test_hash(char *algo, struct hash_testvec *template,
unsigned int tcount)
{
char *p;
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char result[64];
@ -116,10 +115,7 @@ static void test_hash(char *algo, struct hash_testvec *template,
printk("test %u:\n", i + 1);
memset(result, 0, 64);
p = hash_tv[i].plaintext;
sg[0].page = virt_to_page(p);
sg[0].offset = offset_in_page(p);
sg[0].length = hash_tv[i].psize;
sg_set_buf(&sg[0], hash_tv[i].plaintext, hash_tv[i].psize);
crypto_digest_init(tfm);
if (tfm->crt_u.digest.dit_setkey) {
@ -154,10 +150,8 @@ static void test_hash(char *algo, struct hash_testvec *template,
hash_tv[i].plaintext + temp,
hash_tv[i].tap[k]);
temp += hash_tv[i].tap[k];
p = &xbuf[IDX[k]];
sg[k].page = virt_to_page(p);
sg[k].offset = offset_in_page(p);
sg[k].length = hash_tv[i].tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
hash_tv[i].tap[k]);
}
crypto_digest_digest(tfm, sg, hash_tv[i].np, result);
@ -179,7 +173,6 @@ static void test_hash(char *algo, struct hash_testvec *template,
static void test_hmac(char *algo, struct hmac_testvec *template,
unsigned int tcount)
{
char *p;
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char result[64];
@ -210,11 +203,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template,
printk("test %u:\n", i + 1);
memset(result, 0, sizeof (result));
p = hmac_tv[i].plaintext;
klen = hmac_tv[i].ksize;
sg[0].page = virt_to_page(p);
sg[0].offset = offset_in_page(p);
sg[0].length = hmac_tv[i].psize;
sg_set_buf(&sg[0], hmac_tv[i].plaintext, hmac_tv[i].psize);
crypto_hmac(tfm, hmac_tv[i].key, &klen, sg, 1, result);
@ -243,10 +233,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template,
hmac_tv[i].plaintext + temp,
hmac_tv[i].tap[k]);
temp += hmac_tv[i].tap[k];
p = &xbuf[IDX[k]];
sg[k].page = virt_to_page(p);
sg[k].offset = offset_in_page(p);
sg[k].length = hmac_tv[i].tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
hmac_tv[i].tap[k]);
}
crypto_hmac(tfm, hmac_tv[i].key, &klen, sg,
@ -270,7 +258,7 @@ static void test_cipher(char *algo, int mode, int enc,
{
unsigned int ret, i, j, k, temp;
unsigned int tsize;
char *p, *q;
char *q;
struct crypto_tfm *tfm;
char *key;
struct cipher_testvec *cipher_tv;
@ -330,10 +318,8 @@ static void test_cipher(char *algo, int mode, int enc,
goto out;
}
p = cipher_tv[i].input;
sg[0].page = virt_to_page(p);
sg[0].offset = offset_in_page(p);
sg[0].length = cipher_tv[i].ilen;
sg_set_buf(&sg[0], cipher_tv[i].input,
cipher_tv[i].ilen);
if (!mode) {
crypto_cipher_set_iv(tfm, cipher_tv[i].iv,
@ -389,10 +375,8 @@ static void test_cipher(char *algo, int mode, int enc,
cipher_tv[i].input + temp,
cipher_tv[i].tap[k]);
temp += cipher_tv[i].tap[k];
p = &xbuf[IDX[k]];
sg[k].page = virt_to_page(p);
sg[k].offset = offset_in_page(p);
sg[k].length = cipher_tv[i].tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
cipher_tv[i].tap[k]);
}
if (!mode) {
@ -431,14 +415,12 @@ out:
static int test_cipher_jiffies(struct crypto_tfm *tfm, int enc, char *p,
int blen, int sec)
{
struct scatterlist sg[8];
struct scatterlist sg[1];
unsigned long start, end;
int bcount;
int ret;
sg[0].page = virt_to_page(p);
sg[0].offset = offset_in_page(p);
sg[0].length = blen;
sg_set_buf(sg, p, blen);
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
@ -459,14 +441,12 @@ static int test_cipher_jiffies(struct crypto_tfm *tfm, int enc, char *p,
static int test_cipher_cycles(struct crypto_tfm *tfm, int enc, char *p,
int blen)
{
struct scatterlist sg[8];
struct scatterlist sg[1];
unsigned long cycles = 0;
int ret = 0;
int i;
sg[0].page = virt_to_page(p);
sg[0].offset = offset_in_page(p);
sg[0].length = blen;
sg_set_buf(sg, p, blen);
local_bh_disable();
local_irq_disable();
@ -709,9 +689,7 @@ static void test_crc32c(void)
for (i = 0; i < NUMVEC; i++) {
for (j = 0; j < VECSIZE; j++)
test_vec[i][j] = ++b;
sg[i].page = virt_to_page(test_vec[i]);
sg[i].offset = offset_in_page(test_vec[i]);
sg[i].length = VECSIZE;
sg_set_buf(&sg[i], test_vec[i], VECSIZE);
}
seed = SEEDTESTVAL;

5
drivers/acpi/acpi_memhotplug.c
View file

@ -200,8 +200,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
* Note: Assume that this function returns zero on success
*/
result = add_memory(mem_device->start_addr,
(mem_device->end_addr - mem_device->start_addr) + 1,
mem_device->read_write_attribute);
(mem_device->end_addr - mem_device->start_addr) + 1);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "\nadd_memory failed\n"));
mem_device->state = MEMORY_INVALID_STATE;
@ -259,7 +258,7 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
* Ask the VM to offline this memory range.
* Note: Assume that this function returns zero on success
*/
result = remove_memory(start, len, attr);
result = remove_memory(start, len);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Hot-Remove failed.\n"));
return_VALUE(result);

1
drivers/base/Makefile
View file

@ -7,6 +7,7 @@ obj-y := core.o sys.o bus.o dd.o \
obj-y += power/
obj-$(CONFIG_FW_LOADER) += firmware_class.o
obj-$(CONFIG_NUMA) += node.o
obj-$(CONFIG_MEMORY_HOTPLUG) += memory.o
ifeq ($(CONFIG_DEBUG_DRIVER),y)
EXTRA_CFLAGS += -DDEBUG

2
drivers/base/init.c
View file

@ -9,6 +9,7 @@
#include <linux/device.h>
#include <linux/init.h>
#include <linux/memory.h>
#include "base.h"
@ -33,5 +34,6 @@ void __init driver_init(void)
platform_bus_init();
system_bus_init();
cpu_dev_init();
memory_dev_init();
attribute_container_init();
}

452
drivers/base/memory.c Normal file
View file

@ -0,0 +1,452 @@
/*
* drivers/base/memory.c - basic Memory class support
*
* Written by Matt Tolentino <matthew.e.tolentino@intel.com>
* Dave Hansen <haveblue@us.ibm.com>
*
* This file provides the necessary infrastructure to represent
* a SPARSEMEM-memory-model system's physical memory in /sysfs.
* All arch-independent code that assumes MEMORY_HOTPLUG requires
* SPARSEMEM should be contained here, or in mm/memory_hotplug.c.
*/
#include <linux/sysdev.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h> /* capable() */
#include <linux/topology.h>
#include <linux/device.h>
#include <linux/memory.h>
#include <linux/kobject.h>
#include <linux/memory_hotplug.h>
#include <linux/mm.h>
#include <asm/atomic.h>
#include <asm/uaccess.h>
#define MEMORY_CLASS_NAME "memory"
static struct sysdev_class memory_sysdev_class = {
set_kset_name(MEMORY_CLASS_NAME),
};
EXPORT_SYMBOL(memory_sysdev_class);
static char *memory_hotplug_name(struct kset *kset, struct kobject *kobj)
{
return MEMORY_CLASS_NAME;
}
static int memory_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
int num_envp, char *buffer, int buffer_size)
{
int retval = 0;
return retval;
}
static struct kset_hotplug_ops memory_hotplug_ops = {
.name = memory_hotplug_name,
.hotplug = memory_hotplug,
};
static struct notifier_block *memory_chain;
static int register_memory_notifier(struct notifier_block *nb)
{
return notifier_chain_register(&memory_chain, nb);
}
static void unregister_memory_notifier(struct notifier_block *nb)
{
notifier_chain_unregister(&memory_chain, nb);
}
/*
* register_memory - Setup a sysfs device for a memory block
*/
static int
register_memory(struct memory_block *memory, struct mem_section *section,
struct node *root)
{
int error;
memory->sysdev.cls = &memory_sysdev_class;
memory->sysdev.id = __section_nr(section);
error = sysdev_register(&memory->sysdev);
if (root && !error)
error = sysfs_create_link(&root->sysdev.kobj,
&memory->sysdev.kobj,
kobject_name(&memory->sysdev.kobj));
return error;
}
static void
unregister_memory(struct memory_block *memory, struct mem_section *section,
struct node *root)
{
BUG_ON(memory->sysdev.cls != &memory_sysdev_class);
BUG_ON(memory->sysdev.id != __section_nr(section));
sysdev_unregister(&memory->sysdev);
if (root)
sysfs_remove_link(&root->sysdev.kobj,
kobject_name(&memory->sysdev.kobj));
}
/*
* use this as the physical section index that this memsection
* uses.
*/
static ssize_t show_mem_phys_index(struct sys_device *dev, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, sysdev);
return sprintf(buf, "%08lx\n", mem->phys_index);
}
/*
* online, offline, going offline, etc.
*/
static ssize_t show_mem_state(struct sys_device *dev, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, sysdev);
ssize_t len = 0;
/*
* We can probably put these states in a nice little array
* so that they're not open-coded
*/
switch (mem->state) {
case MEM_ONLINE:
len = sprintf(buf, "online\n");
break;
case MEM_OFFLINE:
len = sprintf(buf, "offline\n");
break;
case MEM_GOING_OFFLINE:
len = sprintf(buf, "going-offline\n");
break;
default:
len = sprintf(buf, "ERROR-UNKNOWN-%ld\n",
mem->state);
WARN_ON(1);
break;
}
return len;
}
static inline int memory_notify(unsigned long val, void *v)
{
return notifier_call_chain(&memory_chain, val, v);
}
/*
* MEMORY_HOTPLUG depends on SPARSEMEM in mm/Kconfig, so it is
* OK to have direct references to sparsemem variables in here.
*/
static int
memory_block_action(struct memory_block *mem, unsigned long action)
{
int i;
unsigned long psection;
unsigned long start_pfn, start_paddr;
struct page *first_page;
int ret;
int old_state = mem->state;
psection = mem->phys_index;
first_page = pfn_to_page(psection << PFN_SECTION_SHIFT);
/*
* The probe routines leave the pages reserved, just
* as the bootmem code does. Make sure they're still
* that way.
*/
if (action == MEM_ONLINE) {
for (i = 0; i < PAGES_PER_SECTION; i++) {
if (PageReserved(first_page+i))
continue;
printk(KERN_WARNING "section number %ld page number %d "
"not reserved, was it already online? \n",
psection, i);
return -EBUSY;
}
}
switch (action) {
case MEM_ONLINE:
start_pfn = page_to_pfn(first_page);
ret = online_pages(start_pfn, PAGES_PER_SECTION);
break;
case MEM_OFFLINE:
mem->state = MEM_GOING_OFFLINE;
memory_notify(MEM_GOING_OFFLINE, NULL);
start_paddr = page_to_pfn(first_page) << PAGE_SHIFT;
ret = remove_memory(start_paddr,
PAGES_PER_SECTION << PAGE_SHIFT);
if (ret) {
mem->state = old_state;
break;
}
memory_notify(MEM_MAPPING_INVALID, NULL);
break;
default:
printk(KERN_WARNING "%s(%p, %ld) unknown action: %ld\n",
__FUNCTION__, mem, action, action);
WARN_ON(1);
ret = -EINVAL;
}
/*
* For now, only notify on successful memory operations
*/
if (!ret)
memory_notify(action, NULL);
return ret;
}
static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
down(&mem->state_sem);
if (mem->state != from_state_req) {
ret = -EINVAL;
goto out;
}
ret = memory_block_action(mem, to_state);
if (!ret)
mem->state = to_state;
out:
up(&mem->state_sem);
return ret;
}
static ssize_t
store_mem_state(struct sys_device *dev, const char *buf, size_t count)
{
struct memory_block *mem;
unsigned int phys_section_nr;
int ret = -EINVAL;
mem = container_of(dev, struct memory_block, sysdev);
phys_section_nr = mem->phys_index;
if (!valid_section_nr(phys_section_nr))
goto out;
if (!strncmp(buf, "online", min((int)count, 6)))
ret = memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE);
else if(!strncmp(buf, "offline", min((int)count, 7)))
ret = memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE);
out:
if (ret)
return ret;
return count;
}
/*
* phys_device is a bad name for this. What I really want
* is a way to differentiate between memory ranges that
* are part of physical devices that constitute
* a complete removable unit or fru.
* i.e. do these ranges belong to the same physical device,
* s.t. if I offline all of these sections I can then
* remove the physical device?
*/
static ssize_t show_phys_device(struct sys_device *dev, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, sysdev);
return sprintf(buf, "%d\n", mem->phys_device);
}
static SYSDEV_ATTR(phys_index, 0444, show_mem_phys_index, NULL);
static SYSDEV_ATTR(state, 0644, show_mem_state, store_mem_state);
static SYSDEV_ATTR(phys_device, 0444, show_phys_device, NULL);
#define mem_create_simple_file(mem, attr_name) \
sysdev_create_file(&mem->sysdev, &attr_##attr_name)
#define mem_remove_simple_file(mem, attr_name) \
sysdev_remove_file(&mem->sysdev, &attr_##attr_name)
/*
* Block size attribute stuff
*/
static ssize_t
print_block_size(struct class *class, char *buf)
{
return sprintf(buf, "%lx\n", (unsigned long)PAGES_PER_SECTION * PAGE_SIZE);
}
static CLASS_ATTR(block_size_bytes, 0444, print_block_size, NULL);
static int block_size_init(void)
{
sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_block_size_bytes.attr);
return 0;
}
/*
* Some architectures will have custom drivers to do this, and
* will not need to do it from userspace. The fake hot-add code
* as well as ppc64 will do all of their discovery in userspace
* and will require this interface.
*/
#ifdef CONFIG_ARCH_MEMORY_PROBE
static ssize_t
memory_probe_store(struct class *class, const char __user *buf, size_t count)
{
u64 phys_addr;
int ret;
phys_addr = simple_strtoull(buf, NULL, 0);
ret = add_memory(phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
if (ret)
count = ret;
return count;
}
static CLASS_ATTR(probe, 0700, NULL, memory_probe_store);
static int memory_probe_init(void)
{
sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_probe.attr);
return 0;
}
#else
#define memory_probe_init(...) do {} while (0)
#endif
/*
* Note that phys_device is optional. It is here to allow for
* differentiation between which *physical* devices each
* section belongs to...
*/
static int add_memory_block(unsigned long node_id, struct mem_section *section,
unsigned long state, int phys_device)
{
struct memory_block *mem = kzalloc(sizeof(*mem), GFP_KERNEL);
int ret = 0;
if (!mem)
return -ENOMEM;
mem->phys_index = __section_nr(section);
mem->state = state;
init_MUTEX(&mem->state_sem);
mem->phys_device = phys_device;
ret = register_memory(mem, section, NULL);
if (!ret)
ret = mem_create_simple_file(mem, phys_index);
if (!ret)
ret = mem_create_simple_file(mem, state);
if (!ret)
ret = mem_create_simple_file(mem, phys_device);
return ret;
}
/*
* For now, we have a linear search to go find the appropriate
* memory_block corresponding to a particular phys_index. If
* this gets to be a real problem, we can always use a radix
* tree or something here.
*
* This could be made generic for all sysdev classes.
*/
static struct memory_block *find_memory_block(struct mem_section *section)
{
struct kobject *kobj;
struct sys_device *sysdev;
struct memory_block *mem;
char name[sizeof(MEMORY_CLASS_NAME) + 9 + 1];
/*
* This only works because we know that section == sysdev->id
* slightly redundant with sysdev_register()
*/
sprintf(&name[0], "%s%d", MEMORY_CLASS_NAME, __section_nr(section));
kobj = kset_find_obj(&memory_sysdev_class.kset, name);
if (!kobj)
return NULL;
sysdev = container_of(kobj, struct sys_device, kobj);
mem = container_of(sysdev, struct memory_block, sysdev);
return mem;
}
int remove_memory_block(unsigned long node_id, struct mem_section *section,
int phys_device)
{
struct memory_block *mem;
mem = find_memory_block(section);
mem_remove_simple_file(mem, phys_index);
mem_remove_simple_file(mem, state);
mem_remove_simple_file(mem, phys_device);
unregister_memory(mem, section, NULL);
return 0;
}
/*
* need an interface for the VM to add new memory regions,
* but without onlining it.
*/
int register_new_memory(struct mem_section *section)
{
return add_memory_block(0, section, MEM_OFFLINE, 0);
}
int unregister_memory_section(struct mem_section *section)
{
if (!valid_section(section))
return -EINVAL;
return remove_memory_block(0, section, 0);
}
/*
* Initialize the sysfs support for memory devices...
*/
int __init memory_dev_init(void)
{
unsigned int i;
int ret;
memory_sysdev_class.kset.hotplug_ops = &memory_hotplug_ops;
ret = sysdev_class_register(&memory_sysdev_class);
/*
* Create entries for memory sections that were found
* during boot and have been initialized
*/
for (i = 0; i < NR_MEM_SECTIONS; i++) {
if (!valid_section_nr(i))
continue;
add_memory_block(0, __nr_to_section(i), MEM_ONLINE, 0);
}
memory_probe_init();
block_size_init();
return ret;
}

12
drivers/md/dm-crypt.c
View file

@ -15,7 +15,7 @@
#include <linux/crypto.h>
#include <linux/workqueue.h>
#include <asm/atomic.h>
#include <asm/scatterlist.h>
#include <linux/scatterlist.h>
#include <asm/page.h>
#include "dm.h"
@ -164,9 +164,7 @@ static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti,
return -ENOMEM;
}
sg.page = virt_to_page(cc->key);
sg.offset = offset_in_page(cc->key);
sg.length = cc->key_size;
sg_set_buf(&sg, cc->key, cc->key_size);
crypto_digest_digest(hash_tfm, &sg, 1, salt);
crypto_free_tfm(hash_tfm);
@ -207,14 +205,12 @@ static void crypt_iv_essiv_dtr(struct crypt_config *cc)
static int crypt_iv_essiv_gen(struct crypt_config *cc, u8 *iv, sector_t sector)
{
struct scatterlist sg = { NULL, };
struct scatterlist sg;
memset(iv, 0, cc->iv_size);
*(u64 *)iv = cpu_to_le64(sector);
sg.page = virt_to_page(iv);
sg.offset = offset_in_page(iv);
sg.length = cc->iv_size;
sg_set_buf(&sg, iv, cc->iv_size);
crypto_cipher_encrypt((struct crypto_tfm *)cc->iv_gen_private,
&sg, &sg, cc->iv_size);

7
drivers/net/wireless/airo.c
View file

@ -35,6 +35,7 @@
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/bitops.h>
#include <linux/scatterlist.h>
#include <asm/io.h>
#include <asm/system.h>
@ -1590,11 +1591,9 @@ static void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct
aes_counter[12] = (u8)(counter >> 24);
counter++;
memcpy (plain, aes_counter, 16);
sg[0].page = virt_to_page(plain);
sg[0].offset = ((long) plain & ~PAGE_MASK);
sg[0].length = 16;
sg_set_buf(sg, plain, 16);
crypto_cipher_encrypt(tfm, sg, sg, 16);
cipher = kmap(sg[0].page) + sg[0].offset;
cipher = kmap(sg->page) + sg->offset;
for (j=0; (j<16) && (i< (sizeof(context->coeff)/sizeof(context->coeff[0]))); ) {
context->coeff[i++] = ntohl(*(u32 *)&cipher[j]);
j += 4;

9
drivers/scsi/ahci.c
View file

@ -192,7 +192,6 @@ static void ahci_port_stop(struct ata_port *ap);
static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
static void ahci_qc_prep(struct ata_queued_cmd *qc);
static u8 ahci_check_status(struct ata_port *ap);
static u8 ahci_check_err(struct ata_port *ap);
static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
static void ahci_remove_one (struct pci_dev *pdev);
@ -221,7 +220,6 @@ static const struct ata_port_operations ahci_ops = {
.check_status = ahci_check_status,
.check_altstatus = ahci_check_status,
.check_err = ahci_check_err,
.dev_select = ata_noop_dev_select,
.tf_read = ahci_tf_read,
@ -466,13 +464,6 @@ static u8 ahci_check_status(struct ata_port *ap)
return readl(mmio + PORT_TFDATA) & 0xFF;
}
static u8 ahci_check_err(struct ata_port *ap)
{
void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
return (readl(mmio + PORT_TFDATA) >> 8) & 0xFF;
}
static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ahci_port_priv *pp = ap->private_data;

6
drivers/scsi/arm/scsi.h
View file

@ -10,6 +10,8 @@
* Commonly used scsi driver functions.
*/
#include <linux/scatterlist.h>
#define BELT_AND_BRACES
/*
@ -22,9 +24,7 @@ static inline int copy_SCp_to_sg(struct scatterlist *sg, Scsi_Pointer *SCp, int
BUG_ON(bufs + 1 > max);
sg->page = virt_to_page(SCp->ptr);
sg->offset = offset_in_page(SCp->ptr);
sg->length = SCp->this_residual;
sg_set_buf(sg, SCp->ptr, SCp->this_residual);
if (bufs)
memcpy(sg + 1, SCp->buffer + 1,

46
drivers/scsi/libata-core.c
View file

@ -49,6 +49,7 @@
#include <linux/suspend.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/scatterlist.h>
#include <scsi/scsi.h>
#include "scsi.h"
#include "scsi_priv.h"
@ -371,7 +372,7 @@ static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
struct ata_ioports *ioaddr = &ap->ioaddr;
tf->command = ata_check_status(ap);
tf->feature = ata_chk_err(ap);
tf->feature = inb(ioaddr->error_addr);
tf->nsect = inb(ioaddr->nsect_addr);
tf->lbal = inb(ioaddr->lbal_addr);
tf->lbam = inb(ioaddr->lbam_addr);
@ -405,7 +406,7 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
struct ata_ioports *ioaddr = &ap->ioaddr;
tf->command = ata_check_status(ap);
tf->feature = ata_chk_err(ap);
tf->feature = readb((void __iomem *)ioaddr->error_addr);
tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
@ -525,30 +526,6 @@ u8 ata_altstatus(struct ata_port *ap)
}
/**
* ata_chk_err - Read device error reg
* @ap: port where the device is
*
* Reads ATA taskfile error register for
* currently-selected device and return its value.
*
* Note: may NOT be used as the check_err() entry in
* ata_port_operations.
*
* LOCKING:
* Inherited from caller.
*/
u8 ata_chk_err(struct ata_port *ap)
{
if (ap->ops->check_err)
return ap->ops->check_err(ap);
if (ap->flags & ATA_FLAG_MMIO) {
return readb((void __iomem *) ap->ioaddr.error_addr);
}
return inb(ap->ioaddr.error_addr);
}
/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
@ -901,8 +878,8 @@ static u8 ata_dev_try_classify(struct ata_port *ap, unsigned int device)
memset(&tf, 0, sizeof(tf));
err = ata_chk_err(ap);
ap->ops->tf_read(ap, &tf);
err = tf.feature;
dev->class = ATA_DEV_NONE;
@ -1139,7 +1116,6 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
unsigned int major_version;
u16 tmp;
unsigned long xfer_modes;
u8 status;
unsigned int using_edd;
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
@ -1193,8 +1169,11 @@ retry:
else
wait_for_completion(&wait);
status = ata_chk_status(ap);
if (status & ATA_ERR) {
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->ops->tf_read(ap, &qc->tf);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (qc->tf.command & ATA_ERR) {
/*
* arg! EDD works for all test cases, but seems to return
* the ATA signature for some ATAPI devices. Until the
@ -1207,7 +1186,7 @@ retry:
* to have this problem.
*/
if ((using_edd) && (qc->tf.command == ATA_CMD_ID_ATA)) {
u8 err = ata_chk_err(ap);
u8 err = qc->tf.feature;
if (err & ATA_ABORTED) {
dev->class = ATA_DEV_ATAPI;
qc->cursg = 0;
@ -2609,9 +2588,7 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
qc->buf_virt = buf;
sg = qc->__sg;
sg->page = virt_to_page(buf);
sg->offset = (unsigned long) buf & ~PAGE_MASK;
sg->length = buflen;
sg_init_one(sg, buf, buflen);
}
/**
@ -4962,7 +4939,6 @@ EXPORT_SYMBOL_GPL(ata_tf_to_fis);
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
EXPORT_SYMBOL_GPL(ata_check_status);
EXPORT_SYMBOL_GPL(ata_altstatus);
EXPORT_SYMBOL_GPL(ata_chk_err);
EXPORT_SYMBOL_GPL(ata_exec_command);
EXPORT_SYMBOL_GPL(ata_port_start);
EXPORT_SYMBOL_GPL(ata_port_stop);

18
drivers/scsi/sata_mv.c
View file

@ -258,7 +258,6 @@ struct mv_host_priv {
static void mv_irq_clear(struct ata_port *ap);
static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
static u8 mv_check_err(struct ata_port *ap);
static void mv_phy_reset(struct ata_port *ap);
static void mv_host_stop(struct ata_host_set *host_set);
static int mv_port_start(struct ata_port *ap);
@ -296,7 +295,6 @@ static const struct ata_port_operations mv_ops = {
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
.check_status = ata_check_status,
.check_err = mv_check_err,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
@ -1185,22 +1183,6 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance,
return IRQ_RETVAL(handled);
}
/**
* mv_check_err - Return the error shadow register to caller.
* @ap: ATA channel to manipulate
*
* Marvell requires DMA to be stopped before accessing shadow
* registers. So we do that, then return the needed register.
*
* LOCKING:
* Inherited from caller. FIXME: protect mv_stop_dma with lock?
*/
static u8 mv_check_err(struct ata_port *ap)
{
mv_stop_dma(ap); /* can't read shadow regs if DMA on */
return readb((void __iomem *) ap->ioaddr.error_addr);
}
/**
* mv_phy_reset - Perform eDMA reset followed by COMRESET
* @ap: ATA channel to manipulate

8
drivers/scsi/sata_sil24.c
View file

@ -225,7 +225,6 @@ struct sil24_host_priv {
};
static u8 sil24_check_status(struct ata_port *ap);
static u8 sil24_check_err(struct ata_port *ap);
static u32 sil24_scr_read(struct ata_port *ap, unsigned sc_reg);
static void sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val);
static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
@ -280,7 +279,6 @@ static const struct ata_port_operations sil24_ops = {
.check_status = sil24_check_status,
.check_altstatus = sil24_check_status,
.check_err = sil24_check_err,
.dev_select = ata_noop_dev_select,
.tf_read = sil24_tf_read,
@ -363,12 +361,6 @@ static u8 sil24_check_status(struct ata_port *ap)
return pp->tf.command;
}
static u8 sil24_check_err(struct ata_port *ap)
{
struct sil24_port_priv *pp = ap->private_data;
return pp->tf.feature;
}
static int sil24_scr_map[] = {
[SCR_CONTROL] = 0,
[SCR_STATUS] = 1,

17
drivers/scsi/sg.c
View file

@ -49,6 +49,7 @@ static int sg_version_num = 30533; /* 2 digits for each component */
#include <linux/seq_file.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/scatterlist.h>
#include "scsi.h"
#include <scsi/scsi_dbg.h>
@ -1886,13 +1887,17 @@ st_unmap_user_pages(struct scatterlist *sgl, const unsigned int nr_pages,
int i;
for (i=0; i < nr_pages; i++) {
if (dirtied && !PageReserved(sgl[i].page))
SetPageDirty(sgl[i].page);
/* unlock_page(sgl[i].page); */
struct page *page = sgl[i].page;
/* XXX: just for debug. Remove when PageReserved is removed */
BUG_ON(PageReserved(page));
if (dirtied)
SetPageDirty(page);
/* unlock_page(page); */
/* FIXME: cache flush missing for rw==READ
* FIXME: call the correct reference counting function
*/
page_cache_release(sgl[i].page);
page_cache_release(page);
}
return 0;
@ -1992,9 +1997,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
if (!p)
break;
}
sclp->page = virt_to_page(p);
sclp->offset = offset_in_page(p);
sclp->length = ret_sz;
sg_set_buf(sclp, p, ret_sz);
SCSI_LOG_TIMEOUT(5, printk("sg_build_build: k=%d, a=0x%p, len=%d\n",
k, sg_scatg2virt(sclp), ret_sz));

10
drivers/scsi/st.c
View file

@ -4526,12 +4526,16 @@ static int sgl_unmap_user_pages(struct scatterlist *sgl, const unsigned int nr_p
int i;
for (i=0; i < nr_pages; i++) {
if (dirtied && !PageReserved(sgl[i].page))
SetPageDirty(sgl[i].page);
struct page *page = sgl[i].page;
/* XXX: just for debug. Remove when PageReserved is removed */
BUG_ON(PageReserved(page));
if (dirtied)
SetPageDirty(page);
/* FIXME: cache flush missing for rw==READ
* FIXME: call the correct reference counting function
*/
page_cache_release(sgl[i].page);
page_cache_release(page);
}
return 0;

7
drivers/usb/misc/usbtest.c
View file

@ -9,7 +9,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <asm/scatterlist.h>
#include <linux/scatterlist.h>
#include <linux/usb.h>
@ -381,7 +381,6 @@ alloc_sglist (int nents, int max, int vary)
sg = kmalloc (nents * sizeof *sg, SLAB_KERNEL);
if (!sg)
return NULL;
memset (sg, 0, nents * sizeof *sg);
for (i = 0; i < nents; i++) {
char *buf;
@ -394,9 +393,7 @@ alloc_sglist (int nents, int max, int vary)
memset (buf, 0, size);
/* kmalloc pages are always physically contiguous! */
sg [i].page = virt_to_page (buf);
sg [i].offset = offset_in_page (buf);
sg [i].length = size;
sg_init_one(&sg[i], buf, size);
if (vary) {
size += vary;

4
fs/afs/file.c
View file

@ -291,8 +291,8 @@ static int afs_file_releasepage(struct page *page, gfp_t gfp_flags)
cachefs_uncache_page(vnode->cache, page);
#endif
pageio = (struct cachefs_page *) page->private;
page->private = 0;
pageio = (struct cachefs_page *) page_private(page);
set_page_private(page, 0);
ClearPagePrivate(page);
if (pageio)

1
fs/binfmt_aout.c
View file

@ -318,7 +318,6 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
current->mm->free_area_cache = current->mm->mmap_base;
current->mm->cached_hole_size = 0;
set_mm_counter(current->mm, rss, 0);
current->mm->mmap = NULL;
compute_creds(bprm);
current->flags &= ~PF_FORKNOEXEC;

1
fs/binfmt_elf.c
View file

@ -773,7 +773,6 @@ static int load_elf_binary(struct linux_binprm * bprm, struct pt_regs * regs)
/* Do this so that we can load the interpreter, if need be. We will
change some of these later */
set_mm_counter(current->mm, rss, 0);
current->mm->free_area_cache = current->mm->mmap_base;
current->mm->cached_hole_size = 0;
retval = setup_arg_pages(bprm, randomize_stack_top(STACK_TOP),

7
fs/binfmt_elf_fdpic.c
View file

@ -294,14 +294,7 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm, struct pt_regs *regs
&interp_params,
&current->mm->start_stack,
&current->mm->start_brk);
#endif
/* do this so that we can load the interpreter, if need be
* - we will change some of these later
*/
set_mm_counter(current->mm, rss, 0);
#ifdef CONFIG_MMU
retval = setup_arg_pages(bprm, current->mm->start_stack, executable_stack);
if (retval < 0) {
send_sig(SIGKILL, current, 0);

1
fs/binfmt_flat.c
View file

@ -650,7 +650,6 @@ static int load_flat_file(struct linux_binprm * bprm,
current->mm->start_brk = datapos + data_len + bss_len;
current->mm->brk = (current->mm->start_brk + 3) & ~3;
current->mm->context.end_brk = memp + ksize((void *) memp) - stack_len;
set_mm_counter(current->mm, rss, 0);
}
if (flags & FLAT_FLAG_KTRACE)

1
fs/binfmt_som.c
View file

@ -259,7 +259,6 @@ load_som_binary(struct linux_binprm * bprm, struct pt_regs * regs)
create_som_tables(bprm);
current->mm->start_stack = bprm->p;
set_mm_counter(current->mm, rss, 0);
#if 0
printk("(start_brk) %08lx\n" , (unsigned long) current->mm->start_brk);

2
fs/buffer.c
View file

@ -96,7 +96,7 @@ static void
__clear_page_buffers(struct page *page)
{
ClearPagePrivate(page);
page->private = 0;
set_page_private(page, 0);
page_cache_release(page);
}

1
fs/compat.c
View file

@ -1490,7 +1490,6 @@ int compat_do_execve(char * filename,
/* execve success */
security_bprm_free(bprm);
acct_update_integrals(current);
update_mem_hiwater(current);
kfree(bprm);
return retval;
}

4
fs/direct-io.c
View file

@ -162,6 +162,7 @@ static int dio_refill_pages(struct dio *dio)
up_read(&current->mm->mmap_sem);
if (ret < 0 && dio->blocks_available && (dio->rw == WRITE)) {
struct page *page = ZERO_PAGE(dio->curr_user_address);
/*
* A memory fault, but the filesystem has some outstanding
* mapped blocks. We need to use those blocks up to avoid
@ -169,7 +170,8 @@ static int dio_refill_pages(struct dio *dio)
*/
if (dio->page_errors == 0)
dio->page_errors = ret;
dio->pages[0] = ZERO_PAGE(dio->curr_user_address);
page_cache_get(page);
dio->pages[0] = page;
dio->head = 0;
dio->tail = 1;
ret = 0;

17
fs/exec.c
View file

@ -309,40 +309,36 @@ void install_arg_page(struct vm_area_struct *vma,
pud_t * pud;
pmd_t * pmd;
pte_t * pte;
spinlock_t *ptl;
if (unlikely(anon_vma_prepare(vma)))
goto out_sig;
goto out;
flush_dcache_page(page);
pgd = pgd_offset(mm, address);
spin_lock(&mm->page_table_lock);
pud = pud_alloc(mm, pgd, address);
if (!pud)
goto out;
pmd = pmd_alloc(mm, pud, address);
if (!pmd)
goto out;
pte = pte_alloc_map(mm, pmd, address);
pte = pte_alloc_map_lock(mm, pmd, address, &ptl);
if (!pte)
goto out;
if (!pte_none(*pte)) {
pte_unmap(pte);
pte_unmap_unlock(pte, ptl);
goto out;
}
inc_mm_counter(mm, rss);
inc_mm_counter(mm, anon_rss);
lru_cache_add_active(page);
set_pte_at(mm, address, pte, pte_mkdirty(pte_mkwrite(mk_pte(
page, vma->vm_page_prot))));
page_add_anon_rmap(page, vma, address);
pte_unmap(pte);
spin_unlock(&mm->page_table_lock);
pte_unmap_unlock(pte, ptl);
/* no need for flush_tlb */
return;
out:
spin_unlock(&mm->page_table_lock);
out_sig:
__free_page(page);
force_sig(SIGKILL, current);
}
@ -1207,7 +1203,6 @@ int do_execve(char * filename,
/* execve success */
security_bprm_free(bprm);
acct_update_integrals(current);
update_mem_hiwater(current);
kfree(bprm);
return retval;
}

208
fs/hugetlbfs/inode.c
View file

@ -45,10 +45,58 @@ static struct backing_dev_info hugetlbfs_backing_dev_info = {
int sysctl_hugetlb_shm_group;
static void huge_pagevec_release(struct pagevec *pvec)
{
int i;
for (i = 0; i < pagevec_count(pvec); ++i)
put_page(pvec->pages[i]);
pagevec_reinit(pvec);
}
/*
* huge_pages_needed tries to determine the number of new huge pages that
* will be required to fully populate this VMA. This will be equal to
* the size of the VMA in huge pages minus the number of huge pages
* (covered by this VMA) that are found in the page cache.
*
* Result is in bytes to be compatible with is_hugepage_mem_enough()
*/
unsigned long
huge_pages_needed(struct address_space *mapping, struct vm_area_struct *vma)
{
int i;
struct pagevec pvec;
unsigned long start = vma->vm_start;
unsigned long end = vma->vm_end;
unsigned long hugepages = (end - start) >> HPAGE_SHIFT;
pgoff_t next = vma->vm_pgoff;
pgoff_t endpg = next + ((end - start) >> PAGE_SHIFT);
pagevec_init(&pvec, 0);
while (next < endpg) {
if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE))
break;
for (i = 0; i < pagevec_count(&pvec); i++) {
struct page *page = pvec.pages[i];
if (page->index > next)
next = page->index;
if (page->index >= endpg)
break;
next++;
hugepages--;
}
huge_pagevec_release(&pvec);
}
return hugepages << HPAGE_SHIFT;
}
static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
{
struct inode *inode = file->f_dentry->d_inode;
struct address_space *mapping = inode->i_mapping;
unsigned long bytes;
loff_t len, vma_len;
int ret;
@ -67,6 +115,10 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
if (vma->vm_end - vma->vm_start < HPAGE_SIZE)
return -EINVAL;
bytes = huge_pages_needed(mapping, vma);
if (!is_hugepage_mem_enough(bytes))
return -ENOMEM;
vma_len = (loff_t)(vma->vm_end - vma->vm_start);
down(&inode->i_sem);
@ -79,10 +131,8 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
if (!(vma->vm_flags & VM_WRITE) && len > inode->i_size)
goto out;
ret = hugetlb_prefault(mapping, vma);
if (ret)
goto out;
ret = 0;
hugetlb_prefault_arch_hook(vma->vm_mm);
if (inode->i_size < len)
inode->i_size = len;
out:
@ -92,7 +142,7 @@ out:
}
/*
* Called under down_write(mmap_sem), page_table_lock is not held
* Called under down_write(mmap_sem).
*/
#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
@ -171,16 +221,6 @@ static int hugetlbfs_commit_write(struct file *file,
return -EINVAL;
}
static void huge_pagevec_release(struct pagevec *pvec)
{
int i;
for (i = 0; i < pagevec_count(pvec); ++i)
put_page(pvec->pages[i]);
pagevec_reinit(pvec);
}
static void truncate_huge_page(struct page *page)
{
clear_page_dirty(page);
@ -224,52 +264,35 @@ static void truncate_hugepages(struct address_space *mapping, loff_t lstart)
static void hugetlbfs_delete_inode(struct inode *inode)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(inode->i_sb);
hlist_del_init(&inode->i_hash);
list_del_init(&inode->i_list);
list_del_init(&inode->i_sb_list);
inode->i_state |= I_FREEING;
inodes_stat.nr_inodes--;
spin_unlock(&inode_lock);
if (inode->i_data.nrpages)
truncate_hugepages(&inode->i_data, 0);
security_inode_delete(inode);
if (sbinfo->free_inodes >= 0) {
spin_lock(&sbinfo->stat_lock);
sbinfo->free_inodes++;
spin_unlock(&sbinfo->stat_lock);
}
clear_inode(inode);
destroy_inode(inode);
}
static void hugetlbfs_forget_inode(struct inode *inode)
{
struct super_block *super_block = inode->i_sb;
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(super_block);
struct super_block *sb = inode->i_sb;
if (hlist_unhashed(&inode->i_hash))
goto out_truncate;
if (!(inode->i_state & (I_DIRTY|I_LOCK))) {
list_del(&inode->i_list);
list_add(&inode->i_list, &inode_unused);
}
inodes_stat.nr_unused++;
if (!super_block || (super_block->s_flags & MS_ACTIVE)) {
if (!hlist_unhashed(&inode->i_hash)) {
if (!(inode->i_state & (I_DIRTY|I_LOCK)))
list_move(&inode->i_list, &inode_unused);
inodes_stat.nr_unused++;
if (!sb || (sb->s_flags & MS_ACTIVE)) {
spin_unlock(&inode_lock);
return;
}
inode->i_state |= I_WILL_FREE;
spin_unlock(&inode_lock);
return;
/*
* write_inode_now is a noop as we set BDI_CAP_NO_WRITEBACK
* in our backing_dev_info.
*/
write_inode_now(inode, 1);
spin_lock(&inode_lock);
inode->i_state &= ~I_WILL_FREE;
inodes_stat.nr_unused--;
hlist_del_init(&inode->i_hash);
}
/* write_inode_now() ? */
inodes_stat.nr_unused--;
hlist_del_init(&inode->i_hash);
out_truncate:
list_del_init(&inode->i_list);
list_del_init(&inode->i_sb_list);
inode->i_state |= I_FREEING;
@ -277,13 +300,6 @@ out_truncate:
spin_unlock(&inode_lock);
if (inode->i_data.nrpages)
truncate_hugepages(&inode->i_data, 0);
if (sbinfo->free_inodes >= 0) {
spin_lock(&sbinfo->stat_lock);
sbinfo->free_inodes++;
spin_unlock(&sbinfo->stat_lock);
}
clear_inode(inode);
destroy_inode(inode);
}
@ -291,7 +307,7 @@ out_truncate:
static void hugetlbfs_drop_inode(struct inode *inode)
{
if (!inode->i_nlink)
hugetlbfs_delete_inode(inode);
generic_delete_inode(inode);
else
hugetlbfs_forget_inode(inode);
}
@ -308,7 +324,6 @@ hugetlb_vmtruncate_list(struct prio_tree_root *root, unsigned long h_pgoff)
vma_prio_tree_foreach(vma, &iter, root, h_pgoff, ULONG_MAX) {
unsigned long h_vm_pgoff;
unsigned long v_length;
unsigned long v_offset;
h_vm_pgoff = vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT);
@ -319,11 +334,8 @@ hugetlb_vmtruncate_list(struct prio_tree_root *root, unsigned long h_pgoff)
if (h_vm_pgoff >= h_pgoff)
v_offset = 0;
v_length = vma->vm_end - vma->vm_start;
zap_hugepage_range(vma,
vma->vm_start + v_offset,
v_length - v_offset);
unmap_hugepage_range(vma,
vma->vm_start + v_offset, vma->vm_end);
}
}
@ -379,17 +391,6 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, uid_t uid,
gid_t gid, int mode, dev_t dev)
{
struct inode *inode;
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);
if (sbinfo->free_inodes >= 0) {
spin_lock(&sbinfo->stat_lock);
if (!sbinfo->free_inodes) {
spin_unlock(&sbinfo->stat_lock);
return NULL;
}
sbinfo->free_inodes--;
spin_unlock(&sbinfo->stat_lock);
}
inode = new_inode(sb);
if (inode) {
@ -531,29 +532,51 @@ static void hugetlbfs_put_super(struct super_block *sb)
}
}
static inline int hugetlbfs_dec_free_inodes(struct hugetlbfs_sb_info *sbinfo)
{
if (sbinfo->free_inodes >= 0) {
spin_lock(&sbinfo->stat_lock);
if (unlikely(!sbinfo->free_inodes)) {
spin_unlock(&sbinfo->stat_lock);
return 0;
}
sbinfo->free_inodes--;
spin_unlock(&sbinfo->stat_lock);
}
return 1;
}
static void hugetlbfs_inc_free_inodes(struct hugetlbfs_sb_info *sbinfo)
{
if (sbinfo->free_inodes >= 0) {
spin_lock(&sbinfo->stat_lock);
sbinfo->free_inodes++;
spin_unlock(&sbinfo->stat_lock);
}
}
static kmem_cache_t *hugetlbfs_inode_cachep;
static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);
struct hugetlbfs_inode_info *p;
p = kmem_cache_alloc(hugetlbfs_inode_cachep, SLAB_KERNEL);
if (!p)
if (unlikely(!hugetlbfs_dec_free_inodes(sbinfo)))
return NULL;
p = kmem_cache_alloc(hugetlbfs_inode_cachep, SLAB_KERNEL);
if (unlikely(!p)) {
hugetlbfs_inc_free_inodes(sbinfo);
return NULL;
}
return &p->vfs_inode;
}
static void init_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
{
struct hugetlbfs_inode_info *ei = (struct hugetlbfs_inode_info *)foo;
if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
SLAB_CTOR_CONSTRUCTOR)
inode_init_once(&ei->vfs_inode);
}
static void hugetlbfs_destroy_inode(struct inode *inode)
{
hugetlbfs_inc_free_inodes(HUGETLBFS_SB(inode->i_sb));
mpol_free_shared_policy(&HUGETLBFS_I(inode)->policy);
kmem_cache_free(hugetlbfs_inode_cachep, HUGETLBFS_I(inode));
}
@ -565,6 +588,16 @@ static struct address_space_operations hugetlbfs_aops = {
.set_page_dirty = hugetlbfs_set_page_dirty,
};
static void init_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
{
struct hugetlbfs_inode_info *ei = (struct hugetlbfs_inode_info *)foo;
if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
SLAB_CTOR_CONSTRUCTOR)
inode_init_once(&ei->vfs_inode);
}
struct file_operations hugetlbfs_file_operations = {
.mmap = hugetlbfs_file_mmap,
.fsync = simple_sync_file,
@ -592,6 +625,7 @@ static struct super_operations hugetlbfs_ops = {
.alloc_inode = hugetlbfs_alloc_inode,
.destroy_inode = hugetlbfs_destroy_inode,
.statfs = hugetlbfs_statfs,
.delete_inode = hugetlbfs_delete_inode,
.drop_inode = hugetlbfs_drop_inode,
.put_super = hugetlbfs_put_super,
};

12
fs/jfs/jfs_metapage.c
View file

@ -86,7 +86,7 @@ struct meta_anchor {
atomic_t io_count;
struct metapage *mp[MPS_PER_PAGE];
};
#define mp_anchor(page) ((struct meta_anchor *)page->private)
#define mp_anchor(page) ((struct meta_anchor *)page_private(page))
static inline struct metapage *page_to_mp(struct page *page, uint offset)
{
@ -108,7 +108,7 @@ static inline int insert_metapage(struct page *page, struct metapage *mp)
if (!a)
return -ENOMEM;
memset(a, 0, sizeof(struct meta_anchor));
page->private = (unsigned long)a;
set_page_private(page, (unsigned long)a);
SetPagePrivate(page);
kmap(page);
}
@ -136,7 +136,7 @@ static inline void remove_metapage(struct page *page, struct metapage *mp)
a->mp[index] = NULL;
if (--a->mp_count == 0) {
kfree(a);
page->private = 0;
set_page_private(page, 0);
ClearPagePrivate(page);
kunmap(page);
}
@ -156,13 +156,13 @@ static inline void dec_io(struct page *page, void (*handler) (struct page *))
#else
static inline struct metapage *page_to_mp(struct page *page, uint offset)
{
return PagePrivate(page) ? (struct metapage *)page->private : NULL;
return PagePrivate(page) ? (struct metapage *)page_private(page) : NULL;
}
static inline int insert_metapage(struct page *page, struct metapage *mp)
{
if (mp) {
page->private = (unsigned long)mp;
set_page_private(page, (unsigned long)mp);
SetPagePrivate(page);
kmap(page);
}
@ -171,7 +171,7 @@ static inline int insert_metapage(struct page *page, struct metapage *mp)
static inline void remove_metapage(struct page *page, struct metapage *mp)
{
page->private = 0;
set_page_private(page, 0);
ClearPagePrivate(page);
kunmap(page);
}

2
fs/proc/array.c
View file

@ -438,7 +438,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
jiffies_to_clock_t(it_real_value),
start_time,
vsize,
mm ? get_mm_counter(mm, rss) : 0, /* you might want to shift this left 3 */
mm ? get_mm_rss(mm) : 0,
rsslim,
mm ? mm->start_code : 0,
mm ? mm->end_code : 0,

51
fs/proc/task_mmu.c
View file

@ -14,22 +14,41 @@
char *task_mem(struct mm_struct *mm, char *buffer)
{
unsigned long data, text, lib;
unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
/*
* Note: to minimize their overhead, mm maintains hiwater_vm and
* hiwater_rss only when about to *lower* total_vm or rss. Any
* collector of these hiwater stats must therefore get total_vm
* and rss too, which will usually be the higher. Barriers? not
* worth the effort, such snapshots can always be inconsistent.
*/
hiwater_vm = total_vm = mm->total_vm;
if (hiwater_vm < mm->hiwater_vm)
hiwater_vm = mm->hiwater_vm;
hiwater_rss = total_rss = get_mm_rss(mm);
if (hiwater_rss < mm->hiwater_rss)
hiwater_rss = mm->hiwater_rss;
data = mm->total_vm - mm->shared_vm - mm->stack_vm;
text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
buffer += sprintf(buffer,
"VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
"VmLck:\t%8lu kB\n"
"VmHWM:\t%8lu kB\n"
"VmRSS:\t%8lu kB\n"
"VmData:\t%8lu kB\n"
"VmStk:\t%8lu kB\n"
"VmExe:\t%8lu kB\n"
"VmLib:\t%8lu kB\n"
"VmPTE:\t%8lu kB\n",
(mm->total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
hiwater_vm << (PAGE_SHIFT-10),
(total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
mm->locked_vm << (PAGE_SHIFT-10),
get_mm_counter(mm, rss) << (PAGE_SHIFT-10),
hiwater_rss << (PAGE_SHIFT-10),
total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
mm->stack_vm << (PAGE_SHIFT-10), text, lib,
(PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
@ -44,13 +63,11 @@ unsigned long task_vsize(struct mm_struct *mm)
int task_statm(struct mm_struct *mm, int *shared, int *text,
int *data, int *resident)
{
int rss = get_mm_counter(mm, rss);
*shared = rss - get_mm_counter(mm, anon_rss);
*shared = get_mm_counter(mm, file_rss);
*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
>> PAGE_SHIFT;
*data = mm->total_vm - mm->shared_vm;
*resident = rss;
*resident = *shared + get_mm_counter(mm, anon_rss);
return mm->total_vm;
}
@ -186,13 +203,14 @@ static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
struct mem_size_stats *mss)
{
pte_t *pte, ptent;
spinlock_t *ptl;
unsigned long pfn;
struct page *page;
pte = pte_offset_map(pmd, addr);
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
do {
ptent = *pte;
if (pte_none(ptent) || !pte_present(ptent))
if (!pte_present(ptent))
continue;
mss->resident += PAGE_SIZE;
@ -213,8 +231,8 @@ static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
mss->private_clean += PAGE_SIZE;
}
} while (pte++, addr += PAGE_SIZE, addr != end);
pte_unmap(pte - 1);
cond_resched_lock(&vma->vm_mm->page_table_lock);
pte_unmap_unlock(pte - 1, ptl);
cond_resched();
}
static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud,
@ -268,17 +286,11 @@ static inline void smaps_pgd_range(struct vm_area_struct *vma,
static int show_smap(struct seq_file *m, void *v)
{
struct vm_area_struct *vma = v;
struct mm_struct *mm = vma->vm_mm;
struct mem_size_stats mss;
memset(&mss, 0, sizeof mss);
if (mm) {
spin_lock(&mm->page_table_lock);
if (vma->vm_mm)
smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss);
spin_unlock(&mm->page_table_lock);
}
return show_map_internal(m, v, &mss);
}
@ -407,7 +419,6 @@ static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
for_each_node(i)
md->node[i] =0;
spin_lock(&mm->page_table_lock);
for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
page = follow_page(mm, vaddr, 0);
if (page) {
@ -422,8 +433,8 @@ static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
md->anon++;
md->node[page_to_nid(page)]++;
}
cond_resched();
}
spin_unlock(&mm->page_table_lock);
return md;
}
@ -469,7 +480,7 @@ static int show_numa_map(struct seq_file *m, void *v)
seq_printf(m, " interleave={");
first = 1;
for_each_node(n) {
if (test_bit(n, pol->v.nodes)) {
if (node_isset(n, pol->v.nodes)) {
if (!first)
seq_putc(m,',');
else

7
fs/xfs/linux-2.6/xfs_buf.c
View file

@ -181,8 +181,9 @@ set_page_region(
size_t offset,
size_t length)
{
page->private |= page_region_mask(offset, length);
if (page->private == ~0UL)
set_page_private(page,
page_private(page) | page_region_mask(offset, length));
if (page_private(page) == ~0UL)
SetPageUptodate(page);
}
@ -194,7 +195,7 @@ test_page_region(
{
unsigned long mask = page_region_mask(offset, length);
return (mask && (page->private & mask) == mask);
return (mask && (page_private(page) & mask) == mask);
}
/*

2
include/asm-alpha/barrier.h
View file

@ -1,6 +1,8 @@
#ifndef __BARRIER_H
#define __BARRIER_H
#include <asm/compiler.h>
#define mb() \
__asm__ __volatile__("mb": : :"memory")

5
include/asm-alpha/rwsem.h
View file

@ -262,5 +262,10 @@ static inline long rwsem_atomic_update(long val, struct rw_semaphore *sem)
#endif
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* __KERNEL__ */
#endif /* _ALPHA_RWSEM_H */

23
include/asm-arm/tlb.h
View file

@ -27,11 +27,7 @@
*/
struct mmu_gather {
struct mm_struct *mm;
unsigned int freed;
unsigned int fullmm;
unsigned int flushes;
unsigned int avoided_flushes;
};
DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
@ -39,11 +35,9 @@ DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
static inline struct mmu_gather *
tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
{
int cpu = smp_processor_id();
struct mmu_gather *tlb = &per_cpu(mmu_gathers, cpu);
struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
tlb->mm = mm;
tlb->freed = 0;
tlb->fullmm = full_mm_flush;
return tlb;
@ -52,24 +46,13 @@ tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
static inline void
tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
{
struct mm_struct *mm = tlb->mm;
unsigned long freed = tlb->freed;
int rss = get_mm_counter(mm, rss);
if (rss < freed)
freed = rss;
add_mm_counter(mm, rss, -freed);
if (tlb->fullmm)
flush_tlb_mm(mm);
flush_tlb_mm(tlb->mm);
/* keep the page table cache within bounds */
check_pgt_cache();
}
static inline unsigned int tlb_is_full_mm(struct mmu_gather *tlb)
{
return tlb->fullmm;
put_cpu_var(mmu_gathers);
}
#define tlb_remove_tlb_entry(tlb,ptep,address) do { } while (0)

47
include/asm-arm26/tlb.h
View file

@ -10,24 +10,20 @@
*/
struct mmu_gather {
struct mm_struct *mm;
unsigned int freed;
unsigned int fullmm;
unsigned int flushes;
unsigned int avoided_flushes;
unsigned int need_flush;
unsigned int fullmm;
};
extern struct mmu_gather mmu_gathers[NR_CPUS];
DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
static inline struct mmu_gather *
tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
{
int cpu = smp_processor_id();
struct mmu_gather *tlb = &mmu_gathers[cpu];
struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
tlb->mm = mm;
tlb->freed = 0;
tlb->fullmm = full_mm_flush;
tlb->need_flush = 0;
tlb->fullmm = full_mm_flush;
return tlb;
}
@ -35,30 +31,13 @@ tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
static inline void
tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
{
struct mm_struct *mm = tlb->mm;
unsigned long freed = tlb->freed;
int rss = get_mm_counter(mm, rss);
if (rss < freed)
freed = rss;
add_mm_counter(mm, rss, -freed);
if (freed) {
flush_tlb_mm(mm);
tlb->flushes++;
} else {
tlb->avoided_flushes++;
}
if (tlb->need_flush)
flush_tlb_mm(tlb->mm);
/* keep the page table cache within bounds */
check_pgt_cache();
}
static inline unsigned int
tlb_is_full_mm(struct mmu_gather *tlb)
{
return tlb->fullmm;
put_cpu_var(mmu_gathers);
}
#define tlb_remove_tlb_entry(tlb,ptep,address) do { } while (0)
@ -71,7 +50,13 @@ tlb_is_full_mm(struct mmu_gather *tlb)
} while (0)
#define tlb_end_vma(tlb,vma) do { } while (0)
#define tlb_remove_page(tlb,page) free_page_and_swap_cache(page)
static inline void
tlb_remove_page(struct mmu_gather *tlb, struct page *page)
{
tlb->need_flush = 1;
free_page_and_swap_cache(page);
}
#define pte_free_tlb(tlb,ptep) pte_free(ptep)
#define pmd_free_tlb(tlb,pmdp) pmd_free(pmdp)

11
include/asm-generic/4level-fixup.h
View file

@ -10,14 +10,9 @@
#define pud_t pgd_t
#define pmd_alloc(mm, pud, address) \
({ pmd_t *ret; \
if (pgd_none(*pud)) \
ret = __pmd_alloc(mm, pud, address); \
else \
ret = pmd_offset(pud, address); \
ret; \
})
#define pmd_alloc(mm, pud, address) \
((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
NULL: pmd_offset(pud, address))
#define pud_alloc(mm, pgd, address) (pgd)
#define pud_offset(pgd, start) (pgd)

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