From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 11 Dec 2008 11:46:46 +0000 (+0100)
Subject: perf counters: hw driver API
X-Git-Tag: v2.6.31-rc1~383^2~576
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=621a01eac89b5e2f81a4cf576568b31f40a02724;p=pandora-kernel.git

perf counters: hw driver API

Impact: restructure code, introduce hw_ops driver abstraction

Introduce this abstraction to handle counter details:

 struct hw_perf_counter_ops {
	void (*hw_perf_counter_enable)	(struct perf_counter *counter);
	void (*hw_perf_counter_disable)	(struct perf_counter *counter);
	void (*hw_perf_counter_read)	(struct perf_counter *counter);
 };

This will be useful to support assymetric hw details, and it will also
be useful to implement "software counters". (Counters that count kernel
managed sw events such as pagefaults, context-switches, wall-clock time
or task-local time.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

Reading git-diff-tree failed