From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
"Liang, Kan" <kan.liang@linux.intel.com>,
Leo Yan <leo.yan@arm.com>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org
Subject: Re: [PATCH RESEND] perf: Completely remove possibility to override MAX_NR_CPUS
Date: Fri, 12 Sep 2025 16:35:49 -0300 [thread overview]
Message-ID: <aMR2FZWyXekLEK0-@x1> (raw)
In-Reply-To: <7ded6ce4-1fcb-4e2d-94ab-5c330de6aea0@csgroup.eu>
On Fri, Sep 12, 2025 at 10:32:56AM +0200, Christophe Leroy wrote:
> Le 18/08/2025 à 11:57, Christophe Leroy a écrit :
> > Commit 21b8732eb447 ("perf tools: Allow overriding MAX_NR_CPUS at
> > compile time") added the capability to override MAX_NR_CPUS. At
> > that time it was necessary to reduce the huge amount of RAM used
> > by static stats variables.
> >
> > But this has been unnecessary since commit 6a1e2c5c2673 ("perf stat:
> > Remove a set of shadow stats static variables"), and
> > commit e8399d34d568 ("libperf cpumap: Hide/reduce scope of
> > MAX_NR_CPUS") broke the build in that case because it failed to
> > add the guard around the new definition of MAX_NR_CPUS.
> >
> > So cleanup things and remove guards completely to officialise it
> > is not necessary anymore to override MAX_NR_CPUS.
> >
> > Link: https://lore.kernel.org/all/8c8553387ebf904a9e5a93eaf643cb01164d9fb3.1736188471.git.christophe.leroy@csgroup.eu/
> > Fixes: e8399d34d568 ("libperf cpumap: Hide/reduce scope of MAX_NR_CPUS")
> > Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
>
> Gentle ping
Thanks, applied to perf-tools-next,
- Arnaldo
prev parent reply other threads:[~2025-09-12 19:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-18 9:57 [PATCH RESEND] perf: Completely remove possibility to override MAX_NR_CPUS Christophe Leroy
2025-09-12 8:32 ` Christophe Leroy
2025-09-12 19:35 ` Arnaldo Carvalho de Melo [this message]
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