Vegard Nossum 2dff440525 kmemcheck: add mm functions ... With kmemcheck enabled, the slab allocator needs to do this: 1. Tell kmemcheck to allocate the shadow memory which stores the status of each byte in the allocation proper, e.g. whether it is initialized or uninitialized. 2. Tell kmemcheck which parts of memory that should be marked uninitialized. There are actually a few more states, such as "not yet allocated" and "recently freed". If a slab cache is set up using the SLAB_NOTRACK flag, it will never return memory that can take page faults because of kmemcheck. If a slab cache is NOT set up using the SLAB_NOTRACK flag, callers can still request memory with the __GFP_NOTRACK flag. This does not prevent the page faults from occuring, however, but marks the object in question as being initialized so that no warnings will ever be produced for this object. In addition to (and in contrast to) __GFP_NOTRACK, the __GFP_NOTRACK_FALSE_POSITIVE flag indicates that the allocation should not be tracked _because_ it would produce a false positive. Their values are identical, but need not be so in the future (for example, we could now enable/disable false positives with a config option). Parts of this patch were contributed by Pekka Enberg but merged for atomicity. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>		2009-06-15 12:40:03 +02:00
..
allocpercpu.c	percpu: __percpu_depopulate_mask can take a const mask	2009-04-06 13:44:15 -07:00
backing-dev.c	block: change the request allocation/congestion logic to be sync/async based	2009-04-06 08:04:53 -07:00
bootmem.c	bootmem: fix slab fallback on numa	2009-06-11 19:15:54 +03:00
bounce.c	Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block	2009-06-11 11:10:35 -07:00
debug-pagealloc.c	generic debug pagealloc	2009-04-01 08:59:13 -07:00
dmapool.c	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	2008-04-28 08:58:20 -07:00
fadvise.c	[CVE-2009-0029] System call wrapper special cases	2009-01-14 14:15:18 +01:00
failslab.c	kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c	2009-04-03 12:23:01 +02:00
filemap_xip.c	mm: do_xip_mapping_read: fix length calculation	2009-04-02 19:04:49 -07:00
filemap.c	memcg: fix deadlock between lock_page_cgroup and mapping tree_lock	2009-05-29 08:40:02 -07:00
fremap.c	Do not account for the address space used by hugetlbfs using VM_ACCOUNT	2009-02-10 10:48:42 -08:00
highmem.c	mm: introduce debug_kmap_atomic	2009-04-01 08:59:14 -07:00
hugetlb.c	mm: account for MAP_SHARED mappings using VM_MAYSHARE and not VM_SHARED in hugetlbfs	2009-05-29 08:40:03 -07:00
internal.h	nommu: there is no mlock() for NOMMU, so don't provide the bits	2009-04-01 08:59:14 -07:00
Kconfig	security: use mmap_min_addr indepedently of security models	2009-06-04 12:07:48 +10:00
Kconfig.debug	generic debug pagealloc: build fix	2009-04-02 19:04:48 -07:00
kmemcheck.c	kmemcheck: add mm functions	2009-06-15 12:40:03 +02:00
kmemleak-test.c	kmemleak: Simple testing module for kmemleak	2009-06-11 17:04:19 +01:00
kmemleak.c	kmemleak: Add the base support	2009-06-11 17:03:28 +01:00
maccess.c	kgdb: fix optional arch functions and probe_kernel_*	2008-04-17 20:05:39 +02:00
madvise.c	Revert "Ignore madvise(MADV_WILLNEED) for hugetlbfs-backed regions"	2009-05-13 08:29:12 -07:00
Makefile	kmemcheck: add mm functions	2009-06-15 12:40:03 +02:00
memcontrol.c	memcg: fix build warning and avoid checking for mem != null again and again	2009-05-29 08:40:03 -07:00
memory_hotplug.c	mm: remove GFP_HIGHUSER_PAGECACHE	2009-01-06 15:59:01 -08:00
memory.c	mm: close page_mkwrite races	2009-05-02 15:36:09 -07:00
mempolicy.c	[CVE-2009-0029] System call wrappers part 28	2009-01-14 14:15:30 +01:00
mempool.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
migrate.c	FS-Cache: Recruit a page flags for cache management	2009-04-03 16:42:36 +01:00
mincore.c	[CVE-2009-0029] System call wrappers part 14	2009-01-14 14:15:24 +01:00
mlock.c	x86, bts, mm: clean up buffer allocation	2009-04-24 10:18:52 +02:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-11 14:01:07 -07:00
mmu_notifier.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mmzone.c	[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2	2009-05-18 11:22:24 +01:00
mprotect.c	perf_counter: Add mmap event hooks to mprotect()	2009-06-08 23:10:43 +02:00
mremap.c	[CVE-2009-0029] System call wrappers part 13	2009-01-14 14:15:23 +01:00
msync.c	[CVE-2009-0029] System call wrappers part 13	2009-01-14 14:15:23 +01:00
nommu.c	nommu: Provide mmap_min_addr definition.	2009-06-10 09:24:09 +10:00
oom_kill.c	oom: fix possible oom_dump_tasks NULL pointer	2009-05-29 08:40:01 -07:00
page_alloc.c	kmemleak: Add kmemleak_alloc callback from alloc_large_system_hash	2009-06-11 17:03:30 +01:00
page_cgroup.c	memcg: don't use bootmem allocator in setup code	2009-06-11 19:27:10 +03:00
page_io.c	block: fix bad definition of BIO_RW_SYNC	2009-02-18 10:32:00 +01:00
page_isolation.c	memory hotplug: fix page_zone() calculation in test_pages_isolated()	2008-11-06 15:41:19 -08:00
page-writeback.c	page-writeback: fix the calculation of the oldest_jif in wb_kupdate()	2009-05-17 16:36:11 -07:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
pdflush.c	Revert "mm: add /proc controls for pdflush threads"	2009-05-15 11:32:24 +02:00
percpu.c	percpu: remove rbtree and use page->index instead	2009-04-08 18:31:31 +02:00
prio_tree.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
quicklist.c	cpumask: replace node_to_cpumask with cpumask_of_node.	2009-03-13 14:49:46 +10:30
readahead.c	FS-Cache: Recruit a page flags for cache management	2009-04-03 16:42:36 +01:00
rmap.c	hugh: update email address	2009-05-21 13:14:32 -07:00
shmem_acl.c	[PATCH] sanitize ->permission() prototype	2008-07-26 20:53:14 -04:00
shmem.c	integrity: move ima_counts_get	2009-05-22 09:45:33 +10:00
slab.c	slab: move struct kmem_cache to headers	2009-06-13 08:58:43 +02:00
slob.c	kmemleak: Add the slob memory allocation/freeing hooks	2009-06-11 17:03:30 +01:00
slub.c	Merge branch 'for-linus' of git://linux-arm.org/linux-2.6	2009-06-11 14:15:57 -07:00
sparse-vmemmap.c	vmemmap: warn about page_structs with remote distance	2008-11-06 15:41:19 -08:00
sparse.c	mm: mminit_validate_memmodel_limits(): remove redundant test	2009-04-01 08:59:11 -07:00
swap_state.c	memcg: fix deadlock between lock_page_cgroup and mapping tree_lock	2009-05-29 08:40:02 -07:00
swap.c	mm: fix Committed_AS underflow on large NR_CPUS environment	2009-05-02 15:36:10 -07:00
swapfile.c	PM/hibernate: fix "swap breaks after hibernation failures"	2009-02-21 14:17:17 -08:00
thrash.c	Bug in mm/thrash.c function grab_swap_token()	2007-05-11 08:29:32 -07:00
truncate.c	memcg: fix deadlock between lock_page_cgroup and mapping tree_lock	2009-05-29 08:40:02 -07:00
util.c	Merge branch 'linus' into tracing/core	2009-05-07 11:17:34 +02:00
vmalloc.c	Merge branch 'for-linus' of git://linux-arm.org/linux-2.6	2009-06-11 14:15:57 -07:00
vmscan.c	memcg: fix deadlock between lock_page_cgroup and mapping tree_lock	2009-05-29 08:40:02 -07:00
vmstat.c	[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2	2009-05-18 11:22:24 +01:00