AcoSail/kernel_optimize_test
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sched: Remove task_{u,s,g}time()

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Now all task_{u,s}time() pairs are replaced by task_times().
And task_gtime() is too simple to be an inline function.

Cleanup them all.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Spencer Candland <spencer@bluehost.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Americo Wang <xiyou.wangcong@gmail.com>
LKML-Reference: <4B0E16D1.70902@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Hidetoshi Seto 2009-11-26 14:49:05 +09:00 committed by Ingo Molnar
parent d180c5bcce
commit d5b7c78e97
4 changed files with 5 additions and 37 deletions
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4
fs/proc/array.c
View File

@ -511,7 +511,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
do {
min_flt += t->min_flt;
maj_flt += t->maj_flt;
gtime = cputime_add(gtime, task_gtime(t));
gtime = cputime_add(gtime, t->gtime);
t = next_thread(t);
} while (t != task);
@ -536,7 +536,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
min_flt = task->min_flt;
maj_flt = task->maj_flt;
task_times(task, &utime, &stime);
gtime = task_gtime(task);
gtime = task->gtime;
}
/* scale priority and nice values from timeslices to -20..20 */

3
include/linux/sched.h
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@ -1720,9 +1720,6 @@ static inline void put_task_struct(struct task_struct *t)
__put_task_struct(t);
}
extern cputime_t task_utime(struct task_struct *p);
extern cputime_t task_stime(struct task_struct *p);
extern cputime_t task_gtime(struct task_struct *p);
extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
/*

2
kernel/exit.c
View File

@ -115,7 +115,7 @@ static void __exit_signal(struct task_struct *tsk)
task_times(tsk, &utime, &stime);
sig->utime = cputime_add(sig->utime, utime);
sig->stime = cputime_add(sig->stime, stime);
sig->gtime = cputime_add(sig->gtime, task_gtime(tsk));
sig->gtime = cputime_add(sig->gtime, tsk->gtime);
sig->min_flt += tsk->min_flt;
sig->maj_flt += tsk->maj_flt;
sig->nvcsw += tsk->nvcsw;

33
kernel/sched.c
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@ -5182,22 +5182,12 @@ void account_idle_ticks(unsigned long ticks)
* Use precise platform statistics if available:
*/
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
cputime_t task_utime(struct task_struct *p)
{
return p->utime;
}
cputime_t task_stime(struct task_struct *p)
{
return p->stime;
}
void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
{
if (ut)
*ut = task_utime(p);
*ut = p->utime;
if (st)
*st = task_stime(p);
*st = p->stime;
}
#else
@ -5235,27 +5225,8 @@ void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
if (st)
*st = p->prev_stime;
}
cputime_t task_utime(struct task_struct *p)
{
cputime_t utime;
task_times(p, &utime, NULL);
return utime;
}
cputime_t task_stime(struct task_struct *p)
{
cputime_t stime;
task_times(p, NULL, &stime);
return stime;
}
#endif
inline cputime_t task_gtime(struct task_struct *p)
{
return p->gtime;
}
/*
* This function gets called by the timer code, with HZ frequency.
* We call it with interrupts disabled.