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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-01-25 23:08:29 +0300
committerIngo Molnar <mingo@elte.hu>2008-01-25 23:08:29 +0300
commitfa85ae2418e6843953107cd6a06f645752829bc0 (patch)
tree004130ac471247a29d3f6adfbfe61c474e725779 /kernel/sysctl.c
parent8f4d37ec073c17e2d4aa8851df5837d798606d6f (diff)
downloadlinux-fa85ae2418e6843953107cd6a06f645752829bc0.tar.xz
sched: rt time limit
Very simple time limit on the realtime scheduling classes. Allow the rq's realtime class to consume sched_rt_ratio of every sched_rt_period slice. If the class exceeds this quota the fair class will preempt the realtime class. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 96f31c1bc4f0..3afbd25f43eb 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -306,7 +306,23 @@ static struct ctl_table kern_table[] = {
.procname = "sched_nr_migrate",
.data = &sysctl_sched_nr_migrate,
.maxlen = sizeof(unsigned int),
- .mode = 644,
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sched_rt_period_ms",
+ .data = &sysctl_sched_rt_period,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sched_rt_ratio",
+ .data = &sysctl_sched_rt_ratio,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
.proc_handler = &proc_dointvec,
},
#if defined(CONFIG_FAIR_GROUP_SCHED) && defined(CONFIG_SMP)