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sched: update delay-accounting to use CFS's precise stats

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update delay-accounting to use CFS's precise stats.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Balbir Singh 2007-07-09 18:52:00 +02:00 committed by Ingo Molnar
parent b27f03d4bd
commit 172ba844a8
6 changed files with 15 additions and 15 deletions
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2
fs/proc/base.c
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@ -296,7 +296,7 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer)
*/
static int proc_pid_schedstat(struct task_struct *task, char *buffer)
{
return sprintf(buffer, "%lu %lu %lu\n",
return sprintf(buffer, "%llu %llu %lu\n",
task->sched_info.cpu_time,
task->sched_info.run_delay,
task->sched_info.pcnt);

10
include/linux/sched.h
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@ -562,13 +562,13 @@ struct reclaim_state;
#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
struct sched_info {
/* cumulative counters */
unsigned long cpu_time, /* time spent on the cpu */
run_delay, /* time spent waiting on a runqueue */
pcnt; /* # of timeslices run on this cpu */
unsigned long pcnt; /* # of times run on this cpu */
unsigned long long cpu_time, /* time spent on the cpu */
run_delay; /* time spent waiting on a runqueue */
/* timestamps */
unsigned long last_arrival, /* when we last ran on a cpu */
last_queued; /* when we were last queued to run */
unsigned long long last_arrival,/* when we last ran on a cpu */
last_queued; /* when we were last queued to run */
};
#endif /* defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) */

10
kernel/delayacct.c
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@ -99,9 +99,10 @@ void __delayacct_blkio_end(void)
int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
{
s64 tmp;
struct timespec ts;
unsigned long t1,t2,t3;
unsigned long t1;
unsigned long long t2, t3;
unsigned long flags;
struct timespec ts;
/* Though tsk->delays accessed later, early exit avoids
* unnecessary returning of other data
@ -124,11 +125,10 @@ int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
d->cpu_count += t1;
jiffies_to_timespec(t2, &ts);
tmp = (s64)d->cpu_delay_total + timespec_to_ns(&ts);
tmp = (s64)d->cpu_delay_total + t2;
d->cpu_delay_total = (tmp < (s64)d->cpu_delay_total) ? 0 : tmp;
tmp = (s64)d->cpu_run_virtual_total + (s64)jiffies_to_usecs(t3) * 1000;
tmp = (s64)d->cpu_run_virtual_total + t3;
d->cpu_run_virtual_total =
(tmp < (s64)d->cpu_run_virtual_total) ? 0 : tmp;

2
kernel/exit.c
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@ -122,9 +122,9 @@ static void __exit_signal(struct task_struct *tsk)
sig->maj_flt += tsk->maj_flt;
sig->nvcsw += tsk->nvcsw;
sig->nivcsw += tsk->nivcsw;
sig->sched_time += tsk->sched_time;
sig->inblock += task_io_get_inblock(tsk);
sig->oublock += task_io_get_oublock(tsk);
sig->sum_sched_runtime += tsk->se.sum_exec_runtime;
sig = NULL; /* Marker for below. */
}

4
kernel/fork.c
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@ -877,7 +877,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
sig->nvcsw = sig->nivcsw = sig->cnvcsw = sig->cnivcsw = 0;
sig->min_flt = sig->maj_flt = sig->cmin_flt = sig->cmaj_flt = 0;
sig->inblock = sig->oublock = sig->cinblock = sig->coublock = 0;
sig->sched_time = 0;
sig->sum_sched_runtime = 0;
INIT_LIST_HEAD(&sig->cpu_timers[0]);
INIT_LIST_HEAD(&sig->cpu_timers[1]);
INIT_LIST_HEAD(&sig->cpu_timers[2]);
@ -1040,7 +1040,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
p->utime = cputime_zero;
p->stime = cputime_zero;
p->sched_time = 0;
#ifdef CONFIG_TASK_XACCT
p->rchar = 0; /* I/O counter: bytes read */
p->wchar = 0; /* I/O counter: bytes written */

2
kernel/sched_stats.h
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@ -21,7 +21,7 @@ static int show_schedstat(struct seq_file *seq, void *v)
/* runqueue-specific stats */
seq_printf(seq,
"cpu%d %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
"cpu%d %lu %lu %lu %lu %lu %lu %lu %lu %lu %llu %llu %lu",
cpu, rq->yld_both_empty,
rq->yld_act_empty, rq->yld_exp_empty, rq->yld_cnt,
rq->sched_switch, rq->sched_cnt, rq->sched_goidle,