From: Mark Rutland <mark.rutland@arm.com>
Date: Wed, 27 Apr 2011 09:31:51 +0000 (+0100)
Subject: ARM: perf: only register a CPU PMU when present
X-Git-Tag: v3.2-rc1~130^2~7^2^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48957155f8791964d8567479e6986f88343aba38;p=pandora-kernel.git

ARM: perf: only register a CPU PMU when present

Currently, an "empty" struct pmu is registered as the CPU PMU,
regardless of whether there is a physical PMU. This burdens the
accessor functions with checks to see whether a PMU is actually
present.

This patch changes initialisation to register a PMU only if there is a
supported PMU present, and removes the checks that this change makes
redundant.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

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