From: Stephane Eranian <eranian@google.com>
Date: Thu, 4 Jul 2013 22:30:11 +0000 (+0200)
Subject: perf: Fix interrupt handler timing harness
X-Git-Tag: v3.11-rc1~43^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5302920da9ef23f9d19d4e9ac85704cc25bee7a;p=pandora-kernel.git

perf: Fix interrupt handler timing harness

This patch fixes a serious bug in:

  14c63f17b1fd 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>
Cc: peterz@infradead.org
Cc: dave.hansen@linux.intel.com
Cc: ak@linux.intel.com
Cc: jolsa@redhat.com
Link: http://lkml.kernel.org/r/20130704223010.GA30625@quad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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