From: Tom Zanussi <tzanussi@gmail.com>
Date: Sun, 22 Mar 2009 08:30:49 +0000 (-0500)
Subject: tracing: add ring_buffer_event_discard() to ring buffer
X-Git-Tag: v2.6.30-rc1~2^2~13^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d622719f1572ef31e0616444a515eba3094d050;p=pandora-kernel.git

tracing: add ring_buffer_event_discard() to ring buffer

This patch overloads RINGBUF_TYPE_PADDING to provide a way to discard
events from the ring buffer, for the event-filtering mechanism
introduced in a subsequent patch.

I did the initial version but thanks to Steven Rostedt for adding
the parts that actually made it work. ;-)

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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