linux-kernel - Re: [PATCH V4 10/11] perf intel-pt: Add documentation for pause / resume

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Message-ID: <87ply1lebh.fsf@linux.intel.com>
Date: Tue, 16 Jan 2024 03:15:14 -0800
From: Andi Kleen <ak@...ux.intel.com>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>,  Ingo Molnar <mingo@...hat.com>,
  Mark Rutland <mark.rutland@....com>,  Alexander Shishkin
 <alexander.shishkin@...ux.intel.com>,  Heiko Carstens <hca@...ux.ibm.com>,
  Thomas Richter <tmricht@...ux.ibm.com>,  Hendrik Brueckner
 <brueckner@...ux.ibm.com>,  Suzuki K Poulose <suzuki.poulose@....com>,
  Mike Leach <mike.leach@...aro.org>,  James Clark <james.clark@....com>,
  coresight@...ts.linaro.org,  linux-arm-kernel@...ts.infradead.org,
  Yicong Yang <yangyicong@...ilicon.com>,  Jonathan Cameron
 <jonathan.cameron@...wei.com>,  Will Deacon <will@...nel.org>,  Arnaldo
 Carvalho de Melo <acme@...nel.org>,  Jiri Olsa <jolsa@...nel.org>,
  Namhyung Kim <namhyung@...nel.org>,  Ian Rogers <irogers@...gle.com>,
  linux-kernel@...r.kernel.org,  linux-perf-users@...r.kernel.org
Subject: Re: [PATCH V4 10/11] perf intel-pt: Add documentation for pause /
 resume

Adrian Hunter <adrian.hunter@...el.com> writes:
> +
> +For example, to trace only the uname system call (sys_newuname) when running the
> +command line utility uname:
> +
> + $ perf record --kcore -e
> intel_pt/aux-action=start-paused/k,syscalls:sys_enter_newuname/aux-action=resume/,syscalls:sys_exit_newuname/aux-action=pause/
> uname

It's unclear if the syntax works for hardware break points, kprobes, uprobes too?
That would be most useful. If it works would be good to add examples for it.

-Andi