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| author | Tim Chen <tim.c.chen@linux.intel.com> | 2014-12-12 15:38:12 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-01-30 19:38:49 +0100 |
| commit | 80e3d87b2c5582db0ab5e39610ce3707d97ba409 (patch) | |
| tree | 26ce03eb8edeebe4eca36d6be4de3c35e7494279 /crypto/chainiv.c | |
| parent | 3847b272248a3a4ed70d20392cc0454917f7713b (diff) | |
| download | linux-80e3d87b2c5582db0ab5e39610ce3707d97ba409.tar.bz2 | |
sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target
This patch adds checks that prevens futile attempts to move rt tasks
to a CPU with active tasks of equal or higher priority.
This reduces run queue lock contention and improves the performance of
a well known OLTP benchmark by 0.7%.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Shawn Bohrer <sbohrer@rgmadvisors.com>
Cc: Suruchi Kadu <suruchi.a.kadu@intel.com>
Cc: Doug Nelson<doug.nelson@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1421430374.2399.27.camel@schen9-desk2.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'crypto/chainiv.c')
0 files changed, 0 insertions, 0 deletions