From: Ravi Bangoria <ravi.bangoria@amd.com>
To: Michael Petlan <mpetlan@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>,
James Clark <james.clark@linaro.org>,
Sadasivan Shaiju <sadasivan.shaiju2@amd.com>, <x86@kernel.org>,
<linux-perf-users@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
"Manali Shukla" <manali.shukla@amd.com>,
Santosh Shukla <santosh.shukla@amd.com>,
Ananth Narayan <ananth.narayan@amd.com>,
Sandipan Das <sandipan.das@amd.com>,
Ravi Bangoria <ravi.bangoria@amd.com>
Subject: Re: [PATCH v2 1/5] perf/amd/ibs: Account interrupt for discarded samples
Date: Tue, 24 Feb 2026 13:41:54 +0530 [thread overview]
Message-ID: <c9771902-39da-430f-ab2b-ba953d9ba79e@amd.com> (raw)
In-Reply-To: <79e0c820-e934-47a1-abd-3612e82b310@redhat.com>
Hi Michael,
>> Add interrupt throttling accounting for below cases:
>>
>> o IBS Op PMU: A software filter (in addition to the hardware filter)
>> drops samples whose load latency is below the user-specified
>> threshold.
>>
>> o IBS Fetch PMU: Samples discarded due to the zero-RIP erratum (#1197).
>>
>> Although these samples are discarded, the NMI cost is still incurred, so
>> they should be counted for interrupt throttling.
>>
>
> Maybe worth tagging
>
> Fixes: 26db2e0c51fe83e1dd852c1321407835b481806e ("perf/x86/amd/ibs: Work around erratum #1197")
> Fixes: d20610c19b4a22bc69085b7eb7a02741d51de30e ("perf/amd/ibs: Add support for OP Load Latency Filtering")
Yes, makes sense.
Ingo / Peter, Please let me know if you want me to respin.
Thanks,
Ravi
next prev parent reply other threads:[~2026-02-24 8:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-16 4:22 [PATCH v2 0/5] perf/amd/ibs: Assorted fixes Ravi Bangoria
2026-02-16 4:22 ` [PATCH v2 1/5] perf/amd/ibs: Account interrupt for discarded samples Ravi Bangoria
2026-02-23 12:25 ` Michael Petlan
2026-02-24 8:11 ` Ravi Bangoria [this message]
2026-02-26 13:06 ` Peter Zijlstra
2026-02-28 10:56 ` [tip: perf/core] " tip-bot2 for Ravi Bangoria
2026-02-16 4:22 ` [PATCH v2 2/5] perf/amd/ibs: Limit ldlat->l3missonly dependency to Zen5 Ravi Bangoria
2026-02-28 10:56 ` [tip: perf/core] " tip-bot2 for Ravi Bangoria
2026-02-16 4:22 ` [PATCH v2 3/5] perf/amd/ibs: Preserve PhyAddrVal bit when clearing PhyAddr MSR Ravi Bangoria
2026-02-28 10:56 ` [tip: perf/core] " tip-bot2 for Ravi Bangoria
2026-02-16 4:22 ` [PATCH v2 4/5] perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler Ravi Bangoria
2026-02-28 10:56 ` [tip: perf/core] " tip-bot2 for Ravi Bangoria
2026-03-06 21:13 ` [PATCH v2 4/5] " Michael Petlan
2026-03-09 9:07 ` Michael Petlan
2026-03-09 11:40 ` Ravi Bangoria
2026-03-09 19:06 ` Michael Petlan
2026-03-10 16:46 ` Ravi Bangoria
2026-02-16 4:22 ` [PATCH v2 5/5] perf/amd/ibs: Avoid race between event add and NMI Ravi Bangoria
2026-02-28 10:56 ` [tip: perf/core] " tip-bot2 for Ravi Bangoria
2026-02-18 5:51 ` [PATCH v2 0/5] perf/amd/ibs: Assorted fixes Namhyung Kim
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c9771902-39da-430f-ab2b-ba953d9ba79e@amd.com \
--to=ravi.bangoria@amd.com \
--cc=acme@kernel.org \
--cc=ananth.narayan@amd.com \
--cc=dapeng1.mi@linux.intel.com \
--cc=irogers@google.com \
--cc=james.clark@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=manali.shukla@amd.com \
--cc=mingo@redhat.com \
--cc=mpetlan@redhat.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
--cc=sadasivan.shaiju2@amd.com \
--cc=sandipan.das@amd.com \
--cc=santosh.shukla@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®