tree f3b571e1caff2de3e6b4cace87c2b1ec332667d7
parent 8e1b82e0866befaa0b2920be296c6e4c3fc7f422
author Frederic Weisbecker <fweisbec@gmail.com> 1228531421 +0100
committer Ingo Molnar <mingo@elte.hu> 1228745505 +0100

tracing/function-graph-tracer: append the tracing_graph_flag

Impact: Provide a way to pause the function graph tracer

As suggested by Steven Rostedt, the previous patch that prevented from
spinlock function tracing shouldn't use the raw_spinlock to fix it.
It's much better to follow lockdep with normal spinlock, so this patch
adds a new flag for each task to make the function graph tracer able
to be paused. We also can send an ftrace_printk whithout worrying of
the irrelevant traced spinlock during insertion.

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