From: Stanislaw Gruszka <sgruszka@redhat.com>
To: mingo@kernel.org, fransklaver@gmail.com, hpa@zytor.com,
fweisbec@gmail.com, torvalds@linux-foundation.org,
riel@redhat.com, tglx@linutronix.de, wanpeng.li@hotmail.com,
linux-kernel@vger.kernel.org, garsilva@embeddedor.com,
peterz@infradead.org
Cc: linux-tip-commits@vger.kernel.org
Subject: Re: [tip:sched/core] sched/cputime: Refactor the cputime_adjust() code
Date: Fri, 30 Jun 2017 18:17:17 +0200 [thread overview]
Message-ID: <20170630161716.GA16132@redhat.com> (raw)
In-Reply-To: <tip-72298e5c92c50edd8cb7cfda4519483ce65fa166@git.kernel.org>
On Fri, Jun 30, 2017 at 06:10:35AM -0700, tip-bot for Gustavo A. R. Silva wrote:
> diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
> index aea3135..67c70e2 100644
> --- a/kernel/sched/cputime.c
> +++ b/kernel/sched/cputime.c
> @@ -615,19 +615,13 @@ static void cputime_adjust(struct task_cputime *curr,
> * userspace. Once a task gets some ticks, the monotonicy code at
> * 'update' will ensure things converge to the observed ratio.
^^^^^^
> */
> - if (stime == 0) {
> - utime = rtime;
> - goto update;
> + if (stime != 0) {
> + if (utime == 0)
> + stime = rtime;
> + else
> + stime = scale_stime(stime, rtime, stime + utime);
> }
>
> - if (utime == 0) {
> - stime = rtime;
> - goto update;
> - }
> -
> - stime = scale_stime(stime, rtime, stime + utime);
> -
> -update:
Since 'update' label is removed, I think above comment should be
corrected too. Eventually patch could just remove 'utime = rtime;'
line to shut up coverity.
Stanislaw
next prev parent reply other threads:[~2017-06-30 16:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-27 23:03 [kernel-sched-cputime] question about probable bug in cputime_adjust() Gustavo A. R. Silva
2017-06-28 5:35 ` Frans Klaver
2017-06-28 6:03 ` Frans Klaver
2017-06-28 23:57 ` Gustavo A. R. Silva
2017-06-29 4:51 ` Frans Klaver
2017-06-29 17:58 ` Gustavo A. R. Silva
2017-06-29 18:41 ` [PATCH] sched/cputime: code refactoring " Gustavo A. R. Silva
2017-06-30 13:10 ` [tip:sched/core] sched/cputime: Refactor the cputime_adjust() code tip-bot for Gustavo A. R. Silva
2017-06-30 14:00 ` Rik van Riel
2017-06-30 14:41 ` Frans Klaver
2017-06-30 15:46 ` Frederic Weisbecker
2017-06-30 16:17 ` Stanislaw Gruszka [this message]
2017-07-04 9:17 ` Peter Zijlstra
2017-07-04 10:01 ` Ingo Molnar
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