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 pmucs_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
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2.17.1
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