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Date: Sun, 29 May 2022 10:28:26 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: Ingo Molnar <mingo@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, Clark Williams <williams@...hat.com>, Kate Carcia <kcarcia@...hat.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-perf-users@...r.kernel.org, Adrian Hunter <adrian.hunter@...el.com>, Carsten Haitzler <carsten.haitzler@....com>, Claire Jensen <cjense@...gle.com>, Dmitriy Vyukov <dvyukov@...gle.com>, Eelco Chaudron <echaudro@...hat.com>, Eric Lin <eric.lin@...ive.com>, Florian Fischer <florian.fischer@...q.space>, German Gomez <german.gomez@....com>, Ian Rogers <irogers@...gle.com>, James Clark <james.clark@....com>, Joe Mario <jmario@...hat.com>, Kan Liang <kan.liang@...ux.intel.com>, Leo Yan <leo.yan@...aro.org>, Martin Liška <mliska@...e.cz>, Thomas Richter <tmricht@...ux.ibm.com>, Xing Zhengjun <zhengjun.xing@...ux.intel.com>, Yang Jihong <yangjihong1@...wei.com>, Arnaldo Carvalho de Melo <acme@...hat.com> Subject: Re: [GIT PULL] perf tools changes for v5.19: 2nd batch On Sun, May 29, 2022 at 8:45 AM Arnaldo Carvalho de Melo <acme@...nel.org> wrote: > > - Add BPF based off-CPU profiling. I suspect this could have come with a bit more explanation of what "off-CPU profiling" means. It seems to be "account time when process was scheduled away to caller", but I had to go look at the commits to figure that out. Partly unrelated side note: I've occasionally looked for "useful perf recipes". Not from kernel developers, but from people who solved real performance problems using perf, giving useful examples. Linus
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