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

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Message-ID: <b6d4e04f5ce50aa1ce13fcbdb2d8c5ed15b706d1.camel@intel.com>
Date: Thu, 2 Oct 2025 21:57:49 +0000
From: "Falcon, Thomas" <thomas.falcon@...el.com>
To: "acme@...nel.org" <acme@...nel.org>
CC: "alexander.shishkin@...ux.intel.com" <alexander.shishkin@...ux.intel.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-perf-users@...r.kernel.org"
	<linux-perf-users@...r.kernel.org>, "peterz@...radead.org"
	<peterz@...radead.org>, "mark.rutland@....com" <mark.rutland@....com>,
	"mingo@...hat.com" <mingo@...hat.com>, "Hunter, Adrian"
	<adrian.hunter@...el.com>, "namhyung@...nel.org" <namhyung@...nel.org>,
	"jolsa@...nel.org" <jolsa@...nel.org>, "kan.liang@...ux.intel.com"
	<kan.liang@...ux.intel.com>, "irogers@...gle.com" <irogers@...gle.com>
Subject: Re: [RESEND][PATCH v2 0/2] perf record: ratio-to-prev event term for
 auto counter reload

On Thu, 2025-10-02 at 16:35 -0300, Arnaldo Carvalho de Melo wrote:
> 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?

Ok, I will send it ASAP.

thanks,

Tom

> 
> - Arnaldo