Steven Rostedt 3eefae994d ftrace: limit trace entries ... Currently there is no protection from the root user to use up all of memory for trace buffers. If the root user allocates too many entries, the OOM killer might start kill off all tasks. This patch adds an algorith to check the following condition: pages_requested > (freeable_memory + current_trace_buffer_pages) / 4 If the above is met then the allocation fails. The above prevents more than 1/4th of freeable memory from being used by trace buffers. To determine the freeable_memory, I made determine_dirtyable_memory in mm/page-writeback.c global. Special thanks goes to Peter Zijlstra for suggesting the above calculation. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2008-05-23 22:05:14 +02:00
..
allocpercpu.c	cpumask: Cleanup more uses of CPU_MASK and NODE_MASK	2008-04-19 19:44:58 +02:00
backing-dev.c	mm: bdi: fix race in bdi_class device creation	2008-05-20 13:31:53 -07:00
bootmem.c	memory hotplug: make alloc_bootmem_section()	2008-04-28 08:58:25 -07:00
bounce.c
dmapool.c	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	2008-04-28 08:58:20 -07:00
fadvise.c	xip: support non-struct page backed memory	2008-04-28 08:58:23 -07:00
filemap_xip.c	xip: support non-struct page backed memory	2008-04-28 08:58:23 -07:00
filemap.c	mm: fix infinite loop in filemap_fault	2008-05-14 19:11:13 -07:00
fremap.c	mm: fix various kernel-doc comments	2008-03-19 18:53:35 -07:00
highmem.c	mm: highmem kernel-doc additions	2008-03-19 18:53:35 -07:00
hugetlb.c	page allocator: explicitly retry hugepage allocations	2008-04-29 08:05:58 -07:00
internal.h	memory hotplug: free memmaps allocated by bootmem	2008-04-28 08:58:26 -07:00
Kconfig	PAGEFLAGS_EXTENDED and separate page flags for Head and Tail	2008-04-28 08:58:22 -07:00
maccess.c	kgdb: fix optional arch functions and probe_kernel_*	2008-04-17 20:05:39 +02:00
madvise.c	xip: support non-struct page backed memory	2008-04-28 08:58:23 -07:00
Makefile	uaccess: add probe_kernel_write()	2008-04-17 20:05:36 +02:00
memcontrol.c	memcg: simple stats for memory resource controller	2008-05-01 08:04:02 -07:00
memory_hotplug.c	memory_hotplug: always initialize pageblock bitmap	2008-05-14 19:11:15 -07:00
memory.c	fix SMP data race in pagetable setup vs walking	2008-05-14 10:05:18 -07:00
mempolicy.c	mempolicy: use struct mempolicy pointer in shmem_sb_info	2008-04-28 08:58:25 -07:00
mempool.c
migrate.c	mm: fix warning on memory offline	2008-04-30 08:29:55 -07:00
mincore.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
mlock.c
mmap.c	procfs task exe symlink	2008-04-29 08:06:17 -07:00
mmzone.c	mm: filter based on a nodemask as well as a gfp_mask	2008-04-28 08:58:19 -07:00
mprotect.c	mprotect: prevent alteration of the PAT bits	2008-05-14 19:11:15 -07:00
mremap.c
msync.c
nommu.c	procfs task exe symlink	2008-04-29 08:06:17 -07:00
oom_kill.c	oom_kill: remove unused parameter in badness()	2008-04-28 08:58:26 -07:00
page_alloc.c	memory_hotplug: always initialize pageblock bitmap	2008-05-14 19:11:15 -07:00
page_io.c
page_isolation.c
page-writeback.c	ftrace: limit trace entries	2008-05-23 22:05:14 +02:00
pagewalk.c	mm: fix possible off-by-one in walk_pte_range()	2008-04-28 08:58:16 -07:00
pdflush.c	mm/pdflush.c: merge the same code in two path	2008-05-13 08:02:24 -07:00
prio_tree.c
quicklist.c
readahead.c	mm: bdi: export BDI attributes in sysfs	2008-04-30 08:29:49 -07:00
rmap.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
shmem_acl.c
shmem.c	mm: bdi: add separate writeback accounting capability	2008-04-30 08:29:50 -07:00
slab.c	mm: remove remaining __FUNCTION__ occurrences	2008-04-30 08:29:53 -07:00
slob.c	slob: fix bug - when slob allocates "struct kmem_cache", it does not force alignment.	2008-04-27 18:25:51 +03:00
slub.c	slub: fix atomic usage in any_slab_objects()	2008-05-08 10:46:56 -07:00
sparse-vmemmap.c	NULL noise: fs/*, mm/*, kernel/*	2008-03-30 14:18:41 -07:00
sparse.c	revert "memory hotplug: allocate usemap on the section with pgdat"	2008-04-30 08:29:55 -07:00
swap_state.c	mm: bdi: add separate writeback accounting capability	2008-04-30 08:29:50 -07:00
swap.c	mm: rotate_reclaimable_page() cleanup	2008-04-28 08:58:20 -07:00
swapfile.c	mm: use non-racy method for /proc/swaps creation	2008-04-29 08:06:20 -07:00
thrash.c
tiny-shmem.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2008-03-25 08:57:47 -07:00
truncate.c	fix invalidate_inode_pages2_range() to not clear ret	2008-04-28 08:58:18 -07:00
util.c
vmalloc.c	docbook: fix vmalloc missing parameter notation	2008-05-01 08:03:59 -07:00
vmscan.c	mm: remove remaining __FUNCTION__ occurrences	2008-04-30 08:29:53 -07:00
vmstat.c	make vmstat cpu-unplug safe	2008-05-13 08:02:23 -07:00