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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-06-27 13:41:35 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-27 14:31:45 +0200
commit2398f2c6d34b43025f274fc42eaca34d23ec2320 (patch)
tree0ff3e9edf12c6b4485e4fa94f47a79b44d75376a /kernel/sysctl.c
parentsched: fix shares boost logic (diff)
downloadlinux-2398f2c6d34b43025f274fc42eaca34d23ec2320.tar.xz
linux-2398f2c6d34b43025f274fc42eaca34d23ec2320.zip
sched: update shares on wakeup
We found that the affine wakeup code needs rather accurate load figures to be effective. The trouble is that updating the load figures is fairly expensive with group scheduling. Therefore ratelimit the updating. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 29116652dca8..fe8cdc80ff02 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -266,6 +266,14 @@ static struct ctl_table kern_table[] = {
},
{
.ctl_name = CTL_UNNUMBERED,
+ .procname = "sched_shares_ratelimit",
+ .data = &sysctl_sched_shares_ratelimit,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
.procname = "sched_child_runs_first",
.data = &sysctl_sched_child_runs_first,
.maxlen = sizeof(unsigned int),