From: Will Deacon <will.deacon@arm.com>
Date: Thu, 2 Sep 2010 08:32:08 +0000 (+0100)
Subject: ARM: 6352/1: perf: fix event validation
X-Git-Tag: v2.6.36-rc4~64^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65b4711ff513767341aa1915c822de6ec0de65cb;p=pandora-kernel.git

ARM: 6352/1: perf: fix event validation

The validate_event function in the ARM perf events backend has the
following problems:

1.) Events that are disabled count towards the cost.
2.) Events associated with other PMUs [for example, software events or
    breakpoints] do not count towards the cost, but do fail validation,
    causing the group to fail.

This patch changes validate_event so that it ignores events in the
PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs.

Reported-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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