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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-11-09 22:39:37 +0100
committerIngo Molnar <mingo@elte.hu>2007-11-09 22:39:37 +0100
commitb2be5e96dc0b5a179cf4cb98e65cfb605752ca26 (patch)
treecf229cf83afc2c30369d1751338886cf8a067b5c /include
parent2cb8600e6be4281e381d39e44de4359e46333e23 (diff)
sched: reintroduce the sched_min_granularity tunable
we lost the sched_min_granularity tunable to a clever optimization that uses the sched_latency/min_granularity ratio - but the ratio is quite unintuitive to users and can also crash the kernel if the ratio is set to 0. So reintroduce the min_granularity tunable, while keeping the ratio maintained internally. no functionality changed. [ mingo@elte.hu: some fixlets. ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sched.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 155d7438f7a..5457b6234e1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1460,12 +1460,16 @@ extern void sched_idle_next(void);
#ifdef CONFIG_SCHED_DEBUG
extern unsigned int sysctl_sched_latency;
-extern unsigned int sysctl_sched_nr_latency;
+extern unsigned int sysctl_sched_min_granularity;
extern unsigned int sysctl_sched_wakeup_granularity;
extern unsigned int sysctl_sched_batch_wakeup_granularity;
extern unsigned int sysctl_sched_child_runs_first;
extern unsigned int sysctl_sched_features;
extern unsigned int sysctl_sched_migration_cost;
+
+int sched_nr_latency_handler(struct ctl_table *table, int write,
+ struct file *file, void __user *buffer, size_t *length,
+ loff_t *ppos);
#endif
extern unsigned int sysctl_sched_compat_yield;