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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2007-11-09 22:39:37 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-11-09 22:39:37 +0100 |
| commit | b2be5e96dc0b5a179cf4cb98e65cfb605752ca26 (patch) | |
| tree | cf229cf83afc2c30369d1751338886cf8a067b5c /include | |
| parent | 2cb8600e6be4281e381d39e44de4359e46333e23 (diff) | |
| download | op-kernel-dev-b2be5e96dc0b5a179cf4cb98e65cfb605752ca26.zip op-kernel-dev-b2be5e96dc0b5a179cf4cb98e65cfb605752ca26.tar.gz | |
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.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 155d743..5457b62 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; |
