aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2007-09-19 23:34:46 +0200
committerIngo Molnar <mingo@elte.hu>2007-09-19 23:34:46 +0200
commit1799e35d5baab6e06168b46cc78b968e728ea3d1 (patch)
treecccf64a62fa9106aa18253371b675925c0582bab /include
parenta88a8eff1e6e32d3288986a9d36c6a449c032d3a (diff)
downloadlinux-linaro-1799e35d5baab6e06168b46cc78b968e728ea3d1.tar.gz
sched: add /proc/sys/kernel/sched_compat_yield
add /proc/sys/kernel/sched_compat_yield to make sys_sched_yield() more agressive, by moving the yielding task to the last position in the rbtree. with sched_compat_yield=0: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2539 mingo 20 0 1576 252 204 R 50 0.0 0:02.03 loop_yield 2541 mingo 20 0 1576 244 196 R 50 0.0 0:02.05 loop with sched_compat_yield=1: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2584 mingo 20 0 1576 248 196 R 99 0.0 0:52.45 loop 2582 mingo 20 0 1576 256 204 R 0 0.0 0:00.00 loop_yield Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sched.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5445eaec690..3de79016f2a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1406,6 +1406,7 @@ extern unsigned int sysctl_sched_wakeup_granularity;
extern unsigned int sysctl_sched_batch_wakeup_granularity;
extern unsigned int sysctl_sched_stat_granularity;
extern unsigned int sysctl_sched_runtime_limit;
+extern unsigned int sysctl_sched_compat_yield;
extern unsigned int sysctl_sched_child_runs_first;
extern unsigned int sysctl_sched_features;