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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-06-27 13:41:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-27 14:31:45 +0200 |
| commit | 2398f2c6d34b43025f274fc42eaca34d23ec2320 (patch) | |
| tree | 0ff3e9edf12c6b4485e4fa94f47a79b44d75376a /kernel/sysctl.c | |
| parent | cd80917e4ff465ea77106f8e4fb631eedc4cf426 (diff) | |
| download | lwn-2398f2c6d34b43025f274fc42eaca34d23ec2320.tar.gz lwn-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.c | 8 |
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), |