Re: [PATCH 0/5] ftrace: updates for tip

Ingo Molnar
2009-01-22T09:32:37Z

* Steven Rostedt <rostedt@goodmis.org> wrote:

> Ingo,
>
> These patches are fixes for the wakeup tracer.

That was quick! :-)

> The first is a fix to the empty output you reported to me earlier.
>
> The second is a fix for the ring buffer to not record updates if it is
> disabled, otherwised you can get empty traces there too.
>
> The third is the wakeup change to record all tasks and not just realtime
> tasks. It adds a wakeup_rt tracer to record only rt tasks.
>
> The forth is the addition of the scheduling wakeup and sched switch output
> to the wakeup tracer. This is very helpful data.
>
> The last is probably the most important, and should go into 29 as well. I
> never reset the timestamps used to connect the trace stamps in the
> buffers. This can cause stale stamps to appear and explains some of the
> really bad timestamps in the buffer I've seen.

okay, i've pulled your fixes into tip/tracing/ftrace and i've cherry-picked
the timestamp fix over into tracing/urgent.

Thanks,

Ingo