Will Deacon 721c21c17a mm: mmu_gather: use tlb->end != 0 only for TLB invalidation ... When batching up address ranges for TLB invalidation, we check tlb->end != 0 to indicate that some pages have actually been unmapped. As of commit f045bbb9fa ("mmu_gather: fix over-eager tlb_flush_mmu_free() calling"), we use the same check for freeing these pages in order to avoid a performance regression where we call free_pages_and_swap_cache even when no pages are actually queued up. Unfortunately, the range could have been reset (tlb->end = 0) by tlb_end_vma, which has been shown to cause memory leaks on arm64. Furthermore, investigation into these leaks revealed that the fullmm case on task exit no longer invalidates the TLB, by virtue of tlb->end == 0 (in 3.18, need_flush would have been set). This patch resolves the problem by reverting commit f045bbb9fa, using instead tlb->local.nr as the predicate for page freeing in tlb_flush_mmu_free and ensuring that tlb->end is initialised to a non-zero value in the fullmm case. Tested-by: Mark Langsdorf <mlangsdo@redhat.com> Tested-by: Dave Hansen <dave@sr71.net> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-01-13 15:20:40 +13:00
..
bitops	arch: Mass conversion of smp_mb__*()	2014-04-18 14:20:48 +02:00
4level-fixup.h
atomic-long.h
atomic.h	locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()	2014-10-03 06:06:23 +02:00
atomic64.h	locking,arch: Rewrite generic atomic support	2014-08-14 12:48:14 +02:00
audit_change_attr.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
barrier.h	arch: Add lightweight memory barriers dma_rmb() and dma_wmb()	2014-12-11 21:15:06 -05:00
bitops.h	arch: Prepare for smp_mb__{before,after}_atomic()	2014-04-18 11:40:30 +02:00
bitsperlong.h
bug.h	bug: Make BUG() always stop the machine	2014-04-07 16:36:10 -07:00
bugs.h
cache.h
cacheflush.h
checksum.h
clkdev.h	asm-generic: COMMON_CLK defines __clk_{get,put}	2014-09-25 18:00:45 -07:00
cmpxchg-local.h	LLVMLinux: Remove warning about returning an uninitialized variable	2014-04-09 13:44:35 -07:00
cmpxchg.h
cputime.h
cputime_jiffies.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
cputime_nsecs.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
current.h
delay.h
device.h
div64.h
dma-coherent.h	DMA-API: Change dma_declare_coherent_memory() CPU address to phys_addr_t	2014-05-20 16:55:23 -06:00
dma-contiguous.h	asm-generic: Add dma-contiguous.h	2014-09-22 13:35:51 +02:00
dma-mapping-broken.h
dma-mapping-common.h	Merge branch 'for-v3.18' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping	2014-10-10 16:56:08 -04:00
dma.h
early_ioremap.h	mm: create generic early_ioremap() support	2014-04-07 16:36:15 -07:00
emergency-restart.h
exec.h
fb.h
fixmap.h	arm64: fixmap: fix missing sub-page offset for earlyprintk	2014-05-03 22:20:31 +01:00
ftrace.h
futex.h	asm-generic: add generic futex for !CONFIG_SMP	2014-12-08 12:55:48 +08:00
getorder.h
gpio.h	gpio: Increase ARCH_NR_GPIOs to 512	2014-09-23 17:51:39 +02:00
hardirq.h
hugetlb.h
hw_irq.h
ide_iops.h
int-ll64.h
io-64-nonatomic-hi-lo.h	readq/writeq: Add explicit lo_hi_[read|write]_q and hi_lo_[read|write]_q	2014-07-04 13:27:30 +02:00
io-64-nonatomic-lo-hi.h	readq/writeq: Add explicit lo_hi_[read|write]_q and hi_lo_[read|write]_q	2014-07-04 13:27:30 +02:00
io.h	Merge branch 'io' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into asm-generic	2014-11-11 19:55:45 +01:00
ioctl.h	include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error	2014-06-06 16:08:13 -07:00
iomap.h	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
irq.h
irq_regs.h
irq_work.h	irq_work: Introduce arch_irq_work_has_interrupt()	2014-09-13 18:38:07 +02:00
irqflags.h
Kbuild.asm
kdebug.h
kmap_types.h
kvm_para.h
libata-portmap.h
linkage.h
local.h
local64.h
mcs_spinlock.h	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
memory_model.h
mm_hooks.h	mm: Make arch_unmap()/bprm_mm_init() available to all architectures	2014-11-19 11:54:13 +01:00
mmu.h
mmu_context.h	asm-generic: Remove asm-generic arch_bprm_mm_init()	2014-11-22 21:52:08 +01:00
module.h
msi.h	asm-generic: Add msi.h	2014-11-23 13:01:47 +01:00
mutex-dec.h
mutex-null.h
mutex-xchg.h
mutex.h
page.h
param.h
parport.h
pci-bridge.h
pci-dma-compat.h	pci-dma-compat: add pci_zalloc_consistent helper	2014-08-08 15:57:28 -07:00
pci.h
pci_iomap.h
percpu.h	percpu: preffity percpu header files	2014-06-17 19:12:40 -04:00
pgalloc.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h	s390/mm: pmdp_get_and_clear_full optimization	2014-10-27 13:27:30 +01:00
preempt.h	sched: Kill task_preempt_count()	2014-10-28 10:47:56 +01:00
ptrace.h
qrwlock.h	locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks	2014-06-06 07:58:28 +02:00
qrwlock_types.h	locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks	2014-06-06 07:58:28 +02:00
resource.h	asm-generic: remove _STK_LIM_MAX	2014-05-15 00:32:09 +01:00
rtc.h
rwsem.h	asm-generic: rwsem: de-PPCify rwsem.h	2014-03-14 18:02:08 +00:00
scatterlist.h
seccomp.h	asm-generic: add generic seccomp.h for secure computing mode 1	2014-11-28 10:24:58 +00:00
sections.h	nosave: consolidate __nosave_{begin,end} in <asm/sections.h>	2014-10-09 22:26:04 -04:00
segment.h
serial.h
siginfo.h
signal.h
simd.h
sizes.h
spinlock.h
statfs.h
string.h
switch_to.h
syscall.h	syscall.h: fix doc text for syscall_get_arch()	2014-09-23 16:20:00 -04:00
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h	mm: mmu_gather: use tlb->end != 0 only for TLB invalidation	2015-01-13 15:20:40 +13:00
tlbflush.h
topology.h
trace_clock.h
uaccess-unaligned.h
uaccess.h	asm-generic: uaccess: Spelling s/a ny/any/	2014-01-02 10:45:23 +01:00
unaligned.h	asm-generic: allow generic unaligned access if the arch supports it	2014-05-08 10:22:23 +02:00
unistd.h
user.h
vga.h
vmlinux.lds.h	iommu: provide early initialisation hook for IOMMU drivers	2014-12-01 16:47:46 +00:00
vtime.h
word-at-a-time.h	word-at-a-time: simplify big-endian zero_bytemask macro	2014-05-01 08:57:44 -07:00
xor.h