linux-kernel - Re: [RESEND][PATCH v2 0/2] perf record: ratio-to-prev event term for auto counter reload

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

Message-ID: <aN7UF0MwmQnzk72W@x1>
Date: Thu, 2 Oct 2025 16:35:51 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Thomas Falcon <thomas.falcon@...el.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>, Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [RESEND][PATCH v2 0/2] perf record: ratio-to-prev event term for
 auto counter reload

On Tue, Sep 02, 2025 at 11:40:44AM -0500, Thomas Falcon wrote:
> The Auto Counter Reload (ACR)[1] feature is used to track the
> relative rates of two or more perf events, only sampling
> when a given threshold is exceeded. This helps reduce overhead
> and unnecessary samples. However, enabling this feature
> currently requires setting two parameters:

Can you please try to rebase to what is in tmp.perf-tools-next now?

- Arnaldo