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x86_64: add debug name for early_res

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helps debugging problems in this rather murky area of code.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-02-01 17:49:41 +01:00 committed by Ingo Molnar
parent 24e1c13c93
commit 25eff8d4cd
5 changed files with 16 additions and 11 deletions
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15
arch/x86/kernel/e820_64.c
View file

@ -54,30 +54,33 @@ static unsigned long __initdata end_user_pfn = MAXMEM>>PAGE_SHIFT;
struct early_res {
unsigned long start, end;
char name[16];
};
static struct early_res early_res[MAX_EARLY_RES] __initdata = {
{ 0, PAGE_SIZE }, /* BIOS data page */
{ 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */
#ifdef CONFIG_SMP
{ SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE },
{ SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE, "SMP_TRAMPOLINE" },
#endif
{}
};
void __init reserve_early(unsigned long start, unsigned long end)
void __init reserve_early(unsigned long start, unsigned long end, char *name)
{
int i;
struct early_res *r;
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
r = &early_res[i];
if (end > r->start && start < r->end)
panic("Overlapping early reservations %lx-%lx to %lx-%lx\n",
start, end, r->start, r->end);
panic("Overlapping early reservations %lx-%lx %s to %lx-%lx %s\n",
start, end - 1, name?name:"", r->start, r->end - 1, r->name);
}
if (i >= MAX_EARLY_RES)
panic("Too many early reservations");
r = &early_res[i];
r->start = start;
r->end = end;
if (name)
strncpy(r->name, name, sizeof(r->name) - 1);
}
void __init early_res_to_bootmem(void)
@ -85,6 +88,8 @@ void __init early_res_to_bootmem(void)
int i;
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
struct early_res *r = &early_res[i];
printk(KERN_INFO "early res: %d [%lx-%lx] %s\n", i,
r->start, r->end - 1, r->name);
reserve_bootmem_generic(r->start, r->end - r->start);
}
}

6
arch/x86/kernel/head64.c
View file

@ -75,7 +75,7 @@ static __init void reserve_ebda(void)
if (ebda_size > 64*1024)
ebda_size = 64*1024;
reserve_early(ebda_addr, ebda_addr + ebda_size);
reserve_early(ebda_addr, ebda_addr + ebda_size, "EBDA");
}
void __init x86_64_start_kernel(char * real_mode_data)
@ -105,14 +105,14 @@ void __init x86_64_start_kernel(char * real_mode_data)
pda_init(0);
copy_bootdata(__va(real_mode_data));
reserve_early(__pa_symbol(&_text), __pa_symbol(&_end));
reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");
/* Reserve INITRD */
if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
unsigned long ramdisk_size = boot_params.hdr.ramdisk_size;
unsigned long ramdisk_end = ramdisk_image + ramdisk_size;
reserve_early(ramdisk_image, ramdisk_end);
reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
}
reserve_ebda();

2
arch/x86/mm/init_64.c
View file

@ -420,7 +420,7 @@ void __init_refok init_memory_mapping(unsigned long start, unsigned long end)
mmu_cr4_features = read_cr4();
__flush_tlb_all();
reserve_early(table_start << PAGE_SHIFT, table_end << PAGE_SHIFT);
reserve_early(table_start << PAGE_SHIFT, table_end << PAGE_SHIFT, "PGTABLE");
}
#ifndef CONFIG_NUMA

2
arch/x86/mm/numa_64.c
View file

@ -103,7 +103,7 @@ static int __init allocate_cachealigned_memnodemap(void)
}
pad_addr = (nodemap_addr + pad) & ~pad;
memnodemap = phys_to_virt(pad_addr);
reserve_early(nodemap_addr, nodemap_addr + nodemap_size);
reserve_early(nodemap_addr, nodemap_addr + nodemap_size, "MEMNODEMAP");
printk(KERN_DEBUG "NUMA: Allocated memnodemap from %lx - %lx\n",
nodemap_addr, nodemap_addr + nodemap_size);

2
include/asm-x86/e820_64.h
View file

@ -41,7 +41,7 @@ extern void finish_e820_parsing(void);
extern struct e820map e820;
extern void update_e820(void);
extern void reserve_early(unsigned long start, unsigned long end);
extern void reserve_early(unsigned long start, unsigned long end, char *name);
extern void early_res_to_bootmem(void);
#endif/*!__ASSEMBLY__*/