From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Thu, 4 Dec 2008 22:49:47 +0000 (+0100)
Subject: tracing/ftrace: fix the check of ftrace_trace_task
X-Git-Tag: v2.6.29-rc1~586^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77d683f3e0258d522c5506e7b5fd05c9411184d9;p=pandora-kernel.git

tracing/ftrace: fix the check of ftrace_trace_task

Impact: fix default empty traces on function-graph-tracer

The actual ftrace_trace_task() checks if ftrace_pid_trace is allocated
and return 1 if it is true.
If it is NULL, it will check the bit of pid tracing flag for the current
task (which are not set by default).
So by default, a task is not traced.
Actually all tasks should be traced by default and filter_by_pid when
ftrace_pid_trace is allocated.

The appropriate condition should be to return 1 if filter_by_pid is
set.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acke-dby: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

Reading git-diff-tree failed