From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Thu, 2 Apr 2009 07:16:59 +0000 (+0800)
Subject: tracing: allocate page when needed
X-Git-Tag: v2.6.30-rc2~75^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddd538f3e6a1a4bec2f6942f83a753263e6577b4;p=pandora-kernel.git

tracing: allocate page when needed

Impact: Cleanup

Sometimes, we open trace_pipe_raw, but we don't read(2) it,
we just splice(2) it, thus, the page is not used.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
LKML-Reference: <49D4666B.4010608@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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