Messages in this thread | | | Date | Tue, 28 Mar 2023 09:59:25 +0100 | Subject | Re: [BUG] perf: No samples found when using kcore + coresight | From | James Clark <> |
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On 28/03/2023 01:53, Yang Shi wrote: > Hi Leo, > > Just follow up on this one. Any update? > Hi Yang,
Sorry no update on this yet from me. I was just finishing off "coresight: Fix CTI module refcount leak by making it a helper device" which I hope to post in the next day or two and then I will start on this.
James
> Thanks, > Yang > > On Mon, Mar 13, 2023 at 5:36 PM Leo Yan <leo.yan@linaro.org> wrote: >> >> On Mon, Mar 13, 2023 at 11:15:44AM -0700, Yang Shi wrote: >> >> [...] >> >>>> Just a quick summary, here we have two issues: >>>> >>>> - With command: >>>> perf record -e cs_etm/@tmc_etf63/k --kcore --per-thread \ >>>> -- taskset --cpu-list 1 uname", >>>> >>>> perf doesn't enable "text poke" attribution. >>> >>> No, it enables "text poke" and perf fails to decode coresight trace >>> data too. It doesn't matter whether "--kcore" is after or before "-e >>> cs/etm/@tmc_etf63/k". >> >> Understand now. Thanks for correction, if so we can ignore this one. >> >> Leo
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