linux-kernel - Re: [PATCH] perf parse-events: Set default GH modifier properly

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Message-Id: <175052888301.2250071.13103878674887305698.b4-ty@kernel.org>
Date: Sat, 21 Jun 2025 11:01:23 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Ian Rogers <irogers@...gle.com>, Kan Liang <kan.liang@...ux.intel.com>, 
 Namhyung Kim <namhyung@...nel.org>
Cc: Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>, 
 Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, 
 LKML <linux-kernel@...r.kernel.org>, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH] perf parse-events: Set default GH modifier properly

On Fri, 06 Jun 2025 15:54:31 -0700, Namhyung Kim wrote:
> Commit 7b100989b4f6bce7 ("perf evlist: Remove __evlist__add_default")
> changed to use "cycles:P" as a default event.  But the problem is it
> cannot set other default modifiers correctly.
> 
> perf kvm needs to set attr.exclude_host by default but it didn't work
> because of the logic in the parse_events__modifier_list().  Also the
> exclude_GH_default was applied only if ":u" modifier was specified -
> which is strange.  Move it out after handling the ":GH" and check
> perf_host and perf_guest properly.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung