Am 25.10.2012 03:24, schrieb Ming Lei:
Lei, do you have any doc describing how to use those tracepoints?Hi Bjorn Helgaas, Firstly, please enable these tracepoints via below echo 1 > /sys/kernel/debug/tracing/events/rpm/enable then store the trace event result by below once you make sure your interested events are completed: echo 0 > /sys/kernel/debug/tracing/events/rpm/enable cp /sys/kernel/debug/tracing/trace /media/ram/rpm-trace
Hi,I have created a trace according this description. Therefore I have rebooted my system, enabled the trace and inserted and removed the SD-card until the controller stops working. During this procedure I observed that the controller seems to be more stable. I had to insert and remove the SD-card several times until the controller stopped working. Normally the controller will fail on the first attempt. Also I had the impression (not sure about this since I have not measured it) that the card reader reads the data faster.
I append the gzipped trace and the corresponding dmesg output. Best Regards Uli -- Ulrich Eckhardt http://www.uli-eckhardt.de Ein Blitzableiter auf dem Kirchturm ist das denkbar stärkste Misstrauensvotum gegen den lieben Gott. (Karl Krauss)
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