Ingo Molnar wrote:
* Ingo Molnar <[email protected]> wrote:
Is there a version of these that works with 2.6.23.1 ?
yes, i've backported it and have uploaded the v2.6.23 version to:
http://redhat.com/~mingo/latency-tracing-patches/latency-tracer-v2.6.23.1-combo.patch
..
ok, i experimented around with the latency tracer, trying to capture the
trace of a full suspend+resume cycle, and it needed the tracer fix below
(GTOD clocksource suspend/resume would otherwise confuse the tracer and
you'd get no trace output as a result).
once that tracer bug was fixed, the best method to generate a trace was
to do this:
echo 1 > /proc/sys/kernel/stackframe_tracing
echo 1 > /proc/sys/kernel/syscall_tracing
./trace-cmd bash -c "echo mem > /sys/power/state" > trace.txt
..
I've applied the tracer for 2.6.23.1 patch, plus the bugfix,
and now I just get blinking-LEDs (black screen of death) on resume.
Cheers
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