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| author | Chen, Kenneth W <kenneth.w.chen@intel.com> | 2006-12-10 02:20:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-10 09:55:43 -0800 |
| commit | 06066714f6016cffcb249f6ab21b7919de1bc859 (patch) | |
| tree | ef6848c94a8cf0af47bdf8534aa49b507dfc5952 | |
| parent | 783609c6cb4eaa23f2ac5c968a44483584ec133f (diff) | |
| download | op-kernel-dev-06066714f6016cffcb249f6ab21b7919de1bc859.zip op-kernel-dev-06066714f6016cffcb249f6ab21b7919de1bc859.tar.gz | |
[PATCH] sched: remove lb_stopbalance counter
Remove scheduler stats lb_stopbalance counter. This counter can be
calculated by: lb_balanced - lb_nobusyg - lb_nobusyq. There is no need to
create gazillion counters while we can derive the value.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/linux/sched.h | 1 | ||||
| -rw-r--r-- | kernel/sched.c | 11 |
2 files changed, 4 insertions, 8 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 72d6927..ea92e5c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -707,7 +707,6 @@ struct sched_domain { unsigned long lb_hot_gained[MAX_IDLE_TYPES]; unsigned long lb_nobusyg[MAX_IDLE_TYPES]; unsigned long lb_nobusyq[MAX_IDLE_TYPES]; - unsigned long lb_stopbalance[MAX_IDLE_TYPES]; /* Active load balancing */ unsigned long alb_cnt; diff --git a/kernel/sched.c b/kernel/sched.c index 4e45343..66e44b5 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -428,7 +428,7 @@ static inline void task_rq_unlock(struct rq *rq, unsigned long *flags) * bump this up when changing the output format or the meaning of an existing * format, so that tools can adapt (or abort) */ -#define SCHEDSTAT_VERSION 13 +#define SCHEDSTAT_VERSION 14 static int show_schedstat(struct seq_file *seq, void *v) { @@ -466,7 +466,7 @@ static int show_schedstat(struct seq_file *seq, void *v) seq_printf(seq, "domain%d %s", dcnt++, mask_str); for (itype = SCHED_IDLE; itype < MAX_IDLE_TYPES; itype++) { - seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu %lu", + seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu", sd->lb_cnt[itype], sd->lb_balanced[itype], sd->lb_failed[itype], @@ -474,8 +474,7 @@ static int show_schedstat(struct seq_file *seq, void *v) sd->lb_gained[itype], sd->lb_hot_gained[itype], sd->lb_nobusyq[itype], - sd->lb_nobusyg[itype], - sd->lb_stopbalance[itype]); + sd->lb_nobusyg[itype]); } seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n", sd->alb_cnt, sd->alb_failed, sd->alb_pushed, @@ -2596,10 +2595,8 @@ redo: group = find_busiest_group(sd, this_cpu, &imbalance, idle, &sd_idle, &cpus, balance); - if (*balance == 0) { - schedstat_inc(sd, lb_stopbalance[idle]); + if (*balance == 0) goto out_balanced; - } if (!group) { schedstat_inc(sd, lb_nobusyg[idle]); |
