From: Mark Barnett <mark.barnett@arm.com>
To: James Clark <james.clark@linaro.org>
Cc: ben.gainey@arm.com, deepak.surti@arm.com, ak@linux.intel.com,
will@kernel.org, james.clark@arm.com, mark.rutland@arm.com,
alexander.shishkin@linux.intel.com, jolsa@kernel.org,
adrian.hunter@intel.com, linux-perf-users@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, peterz@infradead.org,
mingo@redhat.com, acme@kernel.org, namhyung@kernel.org,
irogers@google.com
Subject: Re: [PATCH v2 0/5] A mechanism for efficient support for per-function metrics
Date: Fri, 7 Feb 2025 19:23:19 +0000 [thread overview]
Message-ID: <b4302bc7-f2c2-4105-a39e-57a60aa242ff@arm.com> (raw)
In-Reply-To: <ca8de228-68c2-4b2c-bb58-30f275afc49e@linaro.org>
On 1/22/25 16:47, James Clark wrote:
>
>
> On 06/01/2025 12:01 pm, mark.barnett@arm.com wrote:
>> From: Mark Barnett <mark.barnett@arm.com>
>>
>> This patch introduces the concept of an alternating sample rate to perf
>> core and provides the necessary basic changes in the tools to activate
>> that option.
>>
>
> [...]
>
>> Changes since v1:
>> - Rebased onto perf-tools-next, as per request from Ian Rogers.
>> - Removed unnecessary code that truncated period_left to 0 and
>> restarted
>> the PMU.
>> - Renamed variables to use the shorter 'alt_period' instead of
>> 'alterantive_period'.
>> - Added patch #5 that addresses an issue in the x86 and PowerPC
>> drivers that
>> caused the opposite period to be reported in the sample record.
>
> It sounds like it would be better if patch 5 comes first otherwise the
> feature is introduced as broken.
>
>
Thanks, James. I'll re-order them with the next submission.
Mark
prev parent reply other threads:[~2025-02-07 19:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-06 12:01 [PATCH v2 0/5] A mechanism for efficient support for per-function metrics mark.barnett
2025-01-06 12:01 ` [PATCH v2 1/5] perf: Allow periodic events to alternate between two sample periods mark.barnett
2025-01-21 13:01 ` Leo Yan
2025-03-07 20:28 ` Mark Barnett
2025-03-10 10:55 ` Leo Yan
2025-01-31 18:44 ` Rob Herring
2025-02-07 19:18 ` Mark Barnett
2025-01-06 12:01 ` [PATCH v2 2/5] perf: Allow adding fixed random jitter to the alternate sampling period mark.barnett
2025-01-06 12:01 ` [PATCH v2 3/5] tools/perf: Modify event parser to support alt-period term mark.barnett
2025-01-06 12:01 ` [PATCH v2 4/5] tools/perf: Modify event parser to support alt-period-jitter term mark.barnett
2025-01-06 12:01 ` [PATCH v2 5/5] perf: Record sample last_period before updating mark.barnett
2025-01-21 17:22 ` Leo Yan
2025-01-22 5:03 ` kernel test robot
2025-01-22 16:47 ` [PATCH v2 0/5] A mechanism for efficient support for per-function metrics James Clark
2025-02-07 19:23 ` Mark Barnett [this message]
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