Messages in this thread | | | Date | Wed, 21 Jan 2009 18:53:06 -0500 | From | Steven Rostedt <> | Subject | [PATCH 0/5] ftrace: updates for tip |
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Ingo,
These patches are fixes for the wakeup tracer.
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.
-- Steve
The following patches are in:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
branch: tip/devel
Steven Rostedt (5): trace: do not disable wake up tracer on output of trace ring-buffer: do not swap if recording is disabled trace: separate out rt tasks from wakeup tracer wakeup-tracer: show scheduling data in output ring-buffer: reset timestamps when ring buffer is reset
---- kernel/trace/ring_buffer.c | 18 ++++++++ kernel/trace/trace.c | 2 +- kernel/trace/trace_sched_wakeup.c | 78 ++++++++++++++++++++----------------- 3 files changed, 61 insertions(+), 37 deletions(-)
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