diff options
| author | Ingo Molnar <mingo@kernel.org> | 2013-02-11 10:41:53 +0100 | 
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-02-11 10:41:53 +0100 | 
| commit | a3d4fd7a2d81604fedfa270d29c824b8d3380c2e (patch) | |
| tree | 1bd1defbfe3f285dfa7c77f94bc5523ac4a82679 /lib/mpi/mpi-cmp.c | |
| parent | 661e591525ffbb0439270bf2a4d165c04f87543d (diff) | |
| parent | b2fe8ba674e8acbb9e8e63510b802c6d054d88a3 (diff) | |
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>
Diffstat (limited to 'lib/mpi/mpi-cmp.c')
0 files changed, 0 insertions, 0 deletions
