From: Andreas Schwab <schwab@linux-m68k.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.cz>, Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org,
"Artem S. Tashkinov" <t.artem@mailcity.com>,
Dave Jones <davej@redhat.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [resend PATCH for 3.2] procfs: do not confuse jiffies with cputime64_t
Date: Thu, 22 Dec 2011 11:19:12 +0100 [thread overview]
Message-ID: <m2vcp852ov.fsf@igel.home> (raw)
In-Reply-To: <20111221115919.6beac46f.akpm@linux-foundation.org> (Andrew Morton's message of "Wed, 21 Dec 2011 11:59:19 -0800")
Andrew Morton <akpm@linux-foundation.org> writes:
> From: Andreas Schwab <schwab@linux-m68k.org>
> Subject: procfs: do not confuse jiffies with cputime64_t
>
> get_{idle,iowait}_time are supposed to return cputime64_t values, not
> jiffies. Add usecs_to_cputime64 for this.
Subject: procfs: do not confuse jiffies with cputime64_t
Commit 2a95ea6c0d129b4568fb64e1deda16ceb20e6636 ("procfs: do not
overflow get_{idle,iowait}_time for nohz") did not take into account
that one some architectures jiffies and cputime use different units.
Instead of converting the usec value returned by
get_cpu_{idle,iowait}_time_us to units of jiffies, use the new function
usecs_to_cputime64 to convert it to the correct unit of cputime64_t.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
prev parent reply other threads:[~2011-12-22 10:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <m28vmi7ip3.fsf@igel.home>
2011-12-12 8:16 ` [PATCH] procfs: do not confuse jiffies with cputime64_t Michal Hocko
2011-12-12 9:22 ` Arnd Bergmann
2011-12-12 10:17 ` Andreas Schwab
2011-12-12 11:51 ` [PATCH v2] " Andreas Schwab
2011-12-12 12:43 ` Michal Hocko
2011-12-12 13:07 ` [PATCH v3] " Andreas Schwab
2011-12-12 13:12 ` Michal Hocko
2011-12-21 10:03 ` [resend PATCH for 3.2] " Michal Hocko
2011-12-21 19:43 ` Andrew Morton
2011-12-21 19:59 ` Andrew Morton
2011-12-21 23:50 ` Andreas Schwab
2011-12-21 23:56 ` Andrew Morton
2011-12-22 0:14 ` Andreas Schwab
2011-12-22 0:19 ` Andrew Morton
2011-12-22 10:18 ` Andreas Schwab
2011-12-21 23:55 ` Andreas Schwab
2011-12-21 23:59 ` Andrew Morton
2011-12-22 0:20 ` Andreas Schwab
2011-12-22 9:55 ` Martin Schwidefsky
2011-12-22 10:19 ` Andreas Schwab [this message]
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