All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ingo Molnar <mingo@kernel.org>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
	mingo@elte.hu, dave.hansen@linux.intel.com, ak@linux.intel.com,
	jolsa@redhat.com
Subject: Re: [PATCH] perf: fix interrupt handler timing harness
Date: Fri, 5 Jul 2013 08:54:35 +0200	[thread overview]
Message-ID: <20130705065435.GA6699@gmail.com> (raw)
In-Reply-To: <20130704223010.GA30625@quad>


* Stephane Eranian <eranian@google.com> wrote:

> This patch fixes a serious bug in:
> 
> commit 14c63f17b1fde5a575a28e96547a22b451c71fb5
> Author: Dave Hansen <dave.hansen@linux.intel.com>
> Date:   Fri Jun 21 08:51:36 2013 -0700
> 
>     perf: Drop sample rate when sampling is too slow
>     
> 
> There was an misunderstanding on the API of the do_div()
> macro. It returns the remainder of the division and this
> was not what the function expected leading to disabling the
> interrupt latency watchdog.
> 
> This patch also remove a duplicate assignment in
> perf_sample_event_took().
> 
> Signed-off-by: Stephane Eranian <eranian@google.com>

Thanks Stephane - I've applied this to perf/urgent and will get it to 
Linus ASAP.

	Ingo

  reply	other threads:[~2013-07-05  6:54 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-04 22:30 Stephane Eranian
2013-07-05  6:54 ` Ingo Molnar [this message]
2013-07-05  9:54 ` [tip:perf/urgent] perf: Fix " tip-bot for Stephane Eranian
2013-07-08 14:34 ` [PATCH] perf: fix " Dave Hansen
2013-07-08 18:08   ` Stephane Eranian
2013-07-08 20:05     ` Dave Hansen
2013-07-08 20:20       ` Stephane Eranian
2013-07-08 20:34         ` Dave Hansen
2013-07-08 20:54           ` Andi Kleen
2013-07-08 20:56             ` Stephane Eranian

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20130705065435.GA6699@gmail.com \
    --to=mingo@kernel.org \
    --cc=ak@linux.intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=eranian@google.com \
    --cc=jolsa@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=peterz@infradead.org \
    --subject='Re: [PATCH] perf: fix interrupt handler timing harness' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.