diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-21 16:26:44 +0100 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-28 17:07:57 +0100 |
| commit | e80d0a1ae8bb8fee0edd37427836f108b30f596b (patch) | |
| tree | 437db8b1643e39d3d114a7c0e3c913455e693b70 /kernel | |
| parent | a634f93335daa8f38180a0e576ccd68a73c36eaf (diff) | |
cputime: Rename thread_group_times to thread_group_cputime_adjusted
We have thread_group_cputime() and thread_group_times(). The naming
doesn't provide enough information about the difference between
these two APIs.
To lower the confusion, rename thread_group_times() to
thread_group_cputime_adjusted(). This name better suggests that
it's a version of thread_group_cputime() that does some stabilization
on the raw cputime values. ie here: scale on top of CFS runtime
stats and bound lower value for monotonicity.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/exit.c | 4 | ||||
| -rw-r--r-- | kernel/sched/cputime.c | 8 | ||||
| -rw-r--r-- | kernel/sys.c | 6 |
3 files changed, 9 insertions, 9 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 346616c0092c..618f7ee56003 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1186,11 +1186,11 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) * as other threads in the parent group can be right * here reaping other children at the same time. * - * We use thread_group_times() to get times for the thread + * We use thread_group_cputime_adjusted() to get times for the thread * group, which consolidates times for all threads in the * group including the group leader. */ - thread_group_times(p, &tgutime, &tgstime); + thread_group_cputime_adjusted(p, &tgutime, &tgstime); spin_lock_irq(&p->real_parent->sighand->siglock); psig = p->real_parent->signal; sig = p->signal; diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index e56f138a23c7..7dc155371b95 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -445,13 +445,13 @@ void account_idle_ticks(unsigned long ticks) * Use precise platform statistics if available: */ #ifdef CONFIG_VIRT_CPU_ACCOUNTING -void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st) +void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { *ut = p->utime; *st = p->stime; } -void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st) +void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { struct task_cputime cputime; @@ -516,7 +516,7 @@ static cputime_t scale_utime(cputime_t utime, cputime_t rtime, cputime_t total) return (__force cputime_t) temp; } -void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st) +void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { cputime_t rtime, utime = p->utime, total = utime + p->stime; @@ -543,7 +543,7 @@ void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st) /* * Must be called with siglock held. */ -void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st) +void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { struct signal_struct *sig = p->signal; struct task_cputime cputime; diff --git a/kernel/sys.c b/kernel/sys.c index e6e0ece5f6a0..265b37690421 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1046,7 +1046,7 @@ void do_sys_times(struct tms *tms) cputime_t tgutime, tgstime, cutime, cstime; spin_lock_irq(¤t->sighand->siglock); - thread_group_times(current, &tgutime, &tgstime); + thread_group_cputime_adjusted(current, &tgutime, &tgstime); cutime = current->signal->cutime; cstime = current->signal->cstime; spin_unlock_irq(¤t->sighand->siglock); @@ -1704,7 +1704,7 @@ static void k_getrusage(struct task_struct *p, int who, struct rusage *r) utime = stime = 0; if (who == RUSAGE_THREAD) { - task_times(current, &utime, &stime); + task_cputime_adjusted(current, &utime, &stime); accumulate_thread_rusage(p, r); maxrss = p->signal->maxrss; goto out; @@ -1730,7 +1730,7 @@ static void k_getrusage(struct task_struct *p, int who, struct rusage *r) break; case RUSAGE_SELF: - thread_group_times(p, &tgutime, &tgstime); + thread_group_cputime_adjusted(p, &tgutime, &tgstime); utime += tgutime; stime += tgstime; r->ru_nvcsw += p->signal->nvcsw; |