linux-kernel - Re: [PATCH v1 1/2] perf evsel: Add per-thread warning for EOPNOTSUPP open failues

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <aCIl6G9yUCE8ySlp@x1>
Date: Mon, 12 May 2025 13:46:32 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>, Kan@...gle.com,
	Liang@...gle.com, kan.liang@...ux.intel.com,
	James Clark <james.clark@...aro.org>,
	Weilin Wang <weilin.wang@...el.com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] perf evsel: Add per-thread warning for EOPNOTSUPP
 open failues

On Fri, Apr 11, 2025 at 05:47:03PM -0700, Ian Rogers wrote:
> The mrvl_ddr_pmu will return EOPNOTSUPP if opened in per-thread
> mode. Give a warning for this similar to EINVAL. Doing this better
> supports metric testing with limited permissions when the mrvl_ddr_pmu
> is present, as the failure to open causes the test to skip and not
> fail.


Thanks, applied to perf-tools-next,

- Arnaldo