]> git.baikalelectronics.ru Git - kernel.git/commit
mm/kmemleak.c: make cond_resched() rate-limiting more efficient
authorAndrew Morton <akpm@linux-foundation.org>
Thu, 14 Dec 2017 23:32:31 +0000 (15:32 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 15 Dec 2017 00:00:48 +0000 (16:00 -0800)
commit1266f4ad45628a0e3755b4aeba93949096417962
tree22639ff865259e61a78a8685ea2056930bbc5b48
parent8dbd1c90802f42ebef3ff18fbe2132c6546c4c8a
mm/kmemleak.c: make cond_resched() rate-limiting more efficient

Commit 12deaafa1991 ("kmemleak: add scheduling point to
kmemleak_scan()") tries to rate-limit the frequency of cond_resched()
calls, but does it in a way which might incur an expensive division
operation in the inner loop.  Simplify this.

Fixes: 12deaafa19912 ("kmemleak: add scheduling point to kmemleak_scan()")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/kmemleak.c