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Groups > linux.kernel > #1322787
| From | riel@redhat.com |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 2/4] acct,time: change indentation in __acct_update_integrals |
| Date | 2016-02-01 03:20 +0100 |
| Message-ID | <qXcfU-45K-15@gated-at.bofh.it> (permalink) |
| References | <qXcfT-45K-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Rik van Riel <riel@redhat.com>
Change the indentation in __acct_update_integrals to make the function
a little easier to read.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@redhat.com>
---
kernel/tsacct.c | 51 ++++++++++++++++++++++++++-------------------------
1 file changed, 26 insertions(+), 25 deletions(-)
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 1b121a2f1c55..9c23584c76c4 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -123,31 +123,32 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
static void __acct_update_integrals(struct task_struct *tsk,
cputime_t utime, cputime_t stime)
{
- if (likely(tsk->mm)) {
- cputime_t time, dtime;
- unsigned long flags;
- u64 delta;
-
- local_irq_save(flags);
- time = stime + utime;
- dtime = time - tsk->acct_timexpd;
- /* Avoid division: cputime_t is often in nanoseconds already. */
- delta = cputime_to_nsecs(dtime);
-
- if (delta < TICK_NSEC)
- goto out;
-
- tsk->acct_timexpd = time;
- /*
- * Divide by 1024 to avoid overflow, and to avoid division.
- * The final unit reported to userspace is Mbyte-usecs,
- * the rest of the math is done in xacct_add_tsk.
- */
- tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm) >> 10;
- tsk->acct_vm_mem1 += delta * tsk->mm->total_vm >> 10;
- out:
- local_irq_restore(flags);
- }
+ cputime_t time, dtime;
+ unsigned long flags;
+ u64 delta;
+
+ if (!likely(tsk->mm))
+ return;
+
+ local_irq_save(flags);
+ time = stime + utime;
+ dtime = time - tsk->acct_timexpd;
+ /* Avoid division: cputime_t is often in nanoseconds already. */
+ delta = cputime_to_nsecs(dtime);
+
+ if (delta < TICK_NSEC)
+ goto out;
+
+ tsk->acct_timexpd = time;
+ /*
+ * Divide by 1024 to avoid overflow, and to avoid division.
+ * The final unit reported to userspace is Mbyte-usecs,
+ * the rest of the math is done in xacct_add_tsk.
+ */
+ tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm) >> 10;
+ tsk->acct_vm_mem1 += delta * tsk->mm->total_vm >> 10;
+out:
+ local_irq_restore(flags);
}
/**
--
2.5.0
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[PATCH 0/4 v3] sched,time: reduce nohz_full syscall overhead 40% riel@redhat.com - 2016-02-01 03:20 +0100
[PATCH 2/4] acct,time: change indentation in __acct_update_integrals riel@redhat.com - 2016-02-01 03:20 +0100
[PATCH 4/4] sched,time: only call account_{user,sys,guest,idle}_time once a jiffy riel@redhat.com - 2016-02-01 03:20 +0100
Re: [PATCH 4/4] sched,time: only call account_{user,sys,guest,idle}_time once a jiffy Peter Zijlstra <peterz@infradead.org> - 2016-02-01 10:30 +0100
Re: [PATCH 4/4] sched,time: only call account_{user,sys,guest,idle}_time once a jiffy Rik van Riel <riel@redhat.com> - 2016-02-01 20:30 +0100
[PATCH] perf tooling: Simplify 'perf bench syscall' Ingo Molnar <mingo@kernel.org> - 2016-02-01 08:50 +0100
Re: [PATCH] perf tooling: Add 'perf bench syscall' benchmark Andy Lutomirski <luto@amacapital.net> - 2016-02-01 16:50 +0100
Re: [PATCH] perf tooling: Add 'perf bench syscall' benchmark Ingo Molnar <mingo@kernel.org> - 2016-02-03 11:30 +0100
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