From: Mark Rutland <mark.rutland@arm.com>
Date: Thu, 23 Oct 2014 14:23:35 +0000 (+0100)
Subject: arm: perf: fold hotplug notifier into arm_pmu
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~13^2~11^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af66abfe2ec8bd82211e9e4f036a64c902ff4cdb;p=pandora-kernel.git

arm: perf: fold hotplug notifier into arm_pmu

Handling multiple PMUs using a single hotplug notifier requires a list
of PMUs to be maintained, with synchronisation in the probe, remove, and
notify paths. This is error-prone and makes the code much harder to
maintain.

Instead of using a single notifier, we can dynamically allocate a
notifier block per-PMU. The end result is the same, but the list of PMUs
is implicit in the hotplug notifier list rather than within a perf-local
data structure, which makes the code far easier to handle.

Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

Reading git-diff-tree failed