On Mon, 16 Feb 2015 19:22:38 +0100
Frederic Weisbecker <[email protected]> wrote:
> Huang Ying hasn't yet reported a Tested-by but I could reproduce (with both
> function and function_graph tracers btw)
> and the patch fixed it.
Ah right, it's not the recursion from the function tracer that kills
us, it's the recursion from the preempt_enable_notrace() that does...
preempt_schedule_common()
--> traced
preempt_disable_notrace();
preempt_enable_notrace();
(see's NEED_RESCHED set)
preempt_schedule_context();
preempt_schedule_common();
--> traced
etc, etc till boom.
-- Steve
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