From: Steven Rostedt <srostedt@redhat.com>
Date: Wed, 5 Nov 2008 21:05:44 +0000 (-0500)
Subject: ftrace: soft tracing stop and start
X-Git-Tag: v2.6.29-rc1~586^2~94
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f04870148ecb825133bc2733f473b1c5773ac0b;p=pandora-kernel.git

ftrace: soft tracing stop and start

Impact: add way to quickly start stop tracing from the kernel

This patch adds a soft stop and start to the trace. This simply
disables function tracing via the ftrace_disabled flag, and
disables the trace buffers to prevent recording. The tracing
code may still be executed, but the trace will not be recorded.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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