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authorCatalin Marinas <catalin.marinas@arm.com>2019-09-24 01:34:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-25 01:54:07 +0300
commit0647398a8c7bd55e0b7565c5076e86b7c3c204c5 (patch)
tree6613297ab1c94ffc0bfb60d810592d1d61b48319 /lib
parentdba82d9431770e68c45b03f0ffa2daa8abfb9429 (diff)
downloadlinux-0647398a8c7bd55e0b7565c5076e86b7c3c204c5.tar.xz
mm: kmemleak: simple memory allocation pool for kmemleak objects
Add a memory pool for struct kmemleak_object in case the normal kmem_cache_alloc() fails under the gfp constraints passed by the caller. The mem_pool[] array size is currently fixed at 16000. We are not using the existing mempool kernel API since this requires the slab allocator to be available (for pool->elements allocation). A subsequent kmemleak patch will replace the static early log buffer with the pool allocation introduced here and this functionality is required to be available before the slab was initialised. Link: http://lkml.kernel.org/r/20190812160642.52134-3-catalin.marinas@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Qian Cai <cai@lca.pw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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