From: Robert Richter <robert.richter@amd.com>
Date: Fri, 9 Oct 2009 01:17:44 +0000 (+0200)
Subject: oprofile: warn on freeing event buffer too early
X-Git-Tag: v2.6.32-rc5~21^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0868934e536e0ff508f2d359d006b25abc4970d;p=pandora-kernel.git

oprofile: warn on freeing event buffer too early

A race shouldn't happen since all workqueues or handlers are canceled
or flushed before the event buffer is freed. A warning is triggered
now if the buffer is freed too early.

Also, this patch adds some comments about event buffer protection,
reworks some code and adds code to clear buffer_pos during alloc and
free of the event buffer.

Cc: David Rientjes <rientjes@google.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
---

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