From: Ingo Molnar <mingo@kernel.org>
Date: Mon, 11 Feb 2013 09:41:53 +0000 (+0100)
Subject: Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg... 
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=a3d4fd7a2d81604fedfa270d29c824b8d3380c2e;p=~shefty%2Frdma-dev.git

Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/core

Improve uprobes performance by adding 'pre-filtering' support,
by Oleg Nesterov:

	# time perl -e 'syscall -1 for 1..100_000'
	real    0m0.040s
	user    0m0.027s
	sys     0m0.010s

	# perf probe -x /lib/libc.so.6 syscall
	# perf record -e probe_libc:syscall sleep 100 &

Before this series:

	# time perl -e 'syscall -1 for 1..100_000'
	real    0m1.714s
	user    0m0.103s
	sys     0m1.607s

After:

	# time perl -e 'syscall -1 for 1..100_000'
	real    0m0.037s
	user    0m0.013s
	sys     0m0.023s

Signed-off-by: Ingo Molnar <mingo@kernel.org>
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