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sched: cleanup, sched_granularity -> sched_min_granularity

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due to adaptive granularity scheduling the role of sched_granularity
has changed to "minimum granularity", so rename the variable (and the
tunable) accordingly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
This commit is contained in:
Ingo Molnar 2007-08-25 18:41:53 +02:00
parent 218050855e
commit 172ac3dbb7
4 changed files with 8 additions and 8 deletions
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2
include/linux/sched.h
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@ -1400,7 +1400,7 @@ static inline void idle_task_exit(void) {}
extern void sched_idle_next(void);
extern unsigned int sysctl_sched_latency;
extern unsigned int sysctl_sched_granularity;
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_stat_granularity;

6
kernel/sched.c
View file

@ -4913,9 +4913,9 @@ static inline void sched_init_granularity(void)
unsigned int factor = 1 + ilog2(num_online_cpus());
const unsigned long limit = 100000000;
sysctl_sched_granularity *= factor;
if (sysctl_sched_granularity > limit)
sysctl_sched_granularity = limit;
sysctl_sched_min_granularity *= factor;
if (sysctl_sched_min_granularity > limit)
sysctl_sched_min_granularity = limit;
sysctl_sched_latency *= factor;
if (sysctl_sched_latency > limit)

4
kernel/sched_fair.c
View file

@ -40,7 +40,7 @@ unsigned int sysctl_sched_latency __read_mostly = 20000000ULL;
* Minimal preemption granularity for CPU-bound tasks:
* (default: 2 msec, units: nanoseconds)
*/
unsigned int sysctl_sched_granularity __read_mostly = 2000000ULL;
unsigned int sysctl_sched_min_granularity __read_mostly = 2000000ULL;
/*
* SCHED_BATCH wake-up granularity.
@ -258,7 +258,7 @@ sched_granularity(struct cfs_rq *cfs_rq)
if (nr > 1) {
gran = gran/nr - gran/nr/nr;
gran = max(gran, sysctl_sched_granularity);
gran = max(gran, sysctl_sched_min_granularity);
}
return gran;

4
kernel/sysctl.c
View file

@ -222,8 +222,8 @@ static ctl_table kern_table[] = {
#ifdef CONFIG_SCHED_DEBUG
{
.ctl_name = CTL_UNNUMBERED,
.procname = "sched_granularity_ns",
.data = &sysctl_sched_granularity,
.procname = "sched_min_granularity_ns",
.data = &sysctl_sched_min_granularity,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,