Tim Chen 41b1d66c35 sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target ... commit 80e3d87b2c5582db0ab5e39610ce3707d97ba409 upstream. 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> Signed-off-by: Luis Henriques <luis.henriques@canonical.com>		2019-07-27 22:11:08 +02:00
..
auto_group.c
auto_group.h
clock.c
core.c
cpuacct.c
cpuacct.h
cpudeadline.c
cpudeadline.h
cpupri.c
cpupri.h
cputime.c
deadline.c
debug.c
fair.c
features.h
idle_task.c
Makefile
rt.c	sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target	2019-07-27 22:11:08 +02:00
sched.h
sched_avg.c
stats.c
stats.h
stop_task.c
wait.c