Messages in this thread | | | Subject | Re: [PATCH 1/2] Documentation: tracing: Documentation for ultrasoc SMB drivers | From | "liuqi (BA)" <> | Date | Tue, 7 Sep 2021 11:32:43 +0800 |
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Hi Mathieu,
On 2021/9/7 1:34, Mathieu Poirier wrote: > On Mon, Jul 19, 2021 at 07:17:36PM +0800, Qi Liu wrote: >> Ultrasoc trace module is a system level solution for tracing, and SMB >> is the component in trace module to store trace message. This patch >> brings in a documentation for ultrasoc SMB driver and simple introduces >> how to use ultrasoc SMB by sysfs interface and perf interface. >> >> Signed-off-by: Qi Liu <liuqi115@huawei.com>
>> +Example usage of perf:: >> + >> + $# ./perf list pmu >> + cs_etm// [Kernel PMU event] >> + $# ./perf record -e cs_etm/@sink_smb0/ -C 0 --per-thread sleep 2s >> + [ perf record: Woken up 2 times to write data ] >> + [ perf record: Captured and wrote 0.288 MB perf.data ] >> + $# ./perf report > > This IP block works like any other sink device and as such I don't really see a > need for this documentation - especially since it is mostly conveying the same > information already present in coresight.rst. >
Yes, smb works as a sink device. got it, I'll drop this documentation next time.
Thanks, Qi
> Thanks, > Mathieu > >> -- >> 2.17.1 >> > . >
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