Re: [tip: perf/core] perf/amd/ibs: Make IBS a core pmu
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- Subject: Re: [tip: perf/core] perf/amd/ibs: Make IBS a core pmu
- From: Ravi Bangoria <ravi.bangoria@xxxxxxx>
- Date: Fri, 9 Dec 2022 09:02:28 +0530
- Cc: linux-tip-commits@xxxxxxxxxxxxxxx, "Peter Zijlstra (Intel)" <peterz@xxxxxxxxxxxxx>, Ian Rogers <irogers@xxxxxxxxxx>, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Ravi Bangoria <ravi.bangoria@xxxxxxx>
- In-reply-to: <Y5IAi/fgbJk1/h2L@zn.tnic>
- References: <20221115093904.1799-1-ravi.bangoria@amd.com> <166929138346.4906.10749574210524260976.tip-bot2@tip-bot2> <Y5IAi/fgbJk1/h2L@zn.tnic>
- User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.3.3
On 08-Dec-22 8:49 PM, Borislav Petkov wrote:
> I believe this is one of the things Linus wanted to have on AMD hw.
Yes, https://lore.kernel.org/r/CAHk-=wgRm26_oT-JR+TRzDsfhD1TRxfWDM=j6kJerv+m=NU-yQ@xxxxxxxxxxxxxx
This patch solves per-thread profiling issue. However, -e cycles:p is
still root only because IBS hw does not support user/kernel filtering.
Thanks,
Ravi
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