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Date: Tue, 24 Mar 2020 11:29:49 +0200 From: Adrian Hunter <adrian.hunter@...el.com> To: Peter Zijlstra <peterz@...radead.org> Cc: Ingo Molnar <mingo@...hat.com>, Masami Hiramatsu <mhiramat@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, Borislav Petkov <bp@...en8.de>, "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org, Mark Rutland <mark.rutland@....com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Mathieu Poirier <mathieu.poirier@...aro.org>, Leo Yan <leo.yan@...aro.org>, Arnaldo Carvalho de Melo <acme@...nel.org>, Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH V4 00/13] perf/x86: Add perf text poke events On 16/03/20 9:07 am, Adrian Hunter wrote: > On 4/03/20 11:06 am, Adrian Hunter wrote: >> Hi >> >> Here are patches to add a text poke event to record changes to kernel text >> (i.e. self-modifying code) in order to support tracers like Intel PT >> decoding through jump labels, kprobes and ftrace trampolines. >> >> The first 8 patches make the kernel changes and the subsequent patches are >> tools changes. >> >> The next 4 patches add support for updating perf tools' data cache >> with the changed bytes. >> >> The last patch is an Intel PT specific tools change. >> >> Patches also here: >> >> git://git.infradead.org/users/ahunter/linux-perf.git text_poke > > Any comments? Peter, do you have any comments on the first 2 patches? They are pretty much what we have already discussed.
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