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Thu, 25 Sep 2025 09:27:36 -0700 (PDT) Received: from ehlo.thunderbird.net ([185.255.128.31]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-40fb89fb2fcsm3932799f8f.22.2025.09.25.09.27.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Sep 2025 09:27:35 -0700 (PDT) Date: Thu, 25 Sep 2025 18:27:27 +0200 From: Arnaldo Carvalho de Melo To: Athira Rajeev , Adrian Hunter , Ian Rogers , Namhyung Kim , Arnaldo Carvalho de Melo CC: Jiri Olsa , Madhavan Srinivasan , "open list:PERFORMANCE EVENTS SUBSYSTEM" , linuxppc-dev , Aboorva Devarajan , Shrikanth Hegde , hbathini@linux.vnet.ibm.com, Aditya Bodkhe , Venkat Rao Bagalkote , Tejas Manhas Subject: Re: [PATCH V3 0/6] perf/tools: Add interface to expose vpa dtl User-Agent: Thunderbird for Android In-Reply-To: <6BB167B7-6479-44E7-9175-E67E500DB9E2@linux.ibm.com> References: <20250916052536.93911-1-atrajeev@linux.ibm.com> <6BB167B7-6479-44E7-9175-E67E500DB9E2@linux.ibm.com> Message-ID: <7EE7DD5B-6550-436B-A799-2B1DF293121E@gmail.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On September 25, 2025 6:21:19 PM GMT+02:00, Athira Rajeev wrote: > > >> On 17 Sep 2025, at 11:28=E2=80=AFAM, Adrian Hunter wrote: >>=20 >> On 16/09/2025 08:25, Athira Rajeev wrote: >>> The pseries Shared Processor Logical Partition(SPLPAR) machines can >>> retrieve a log of dispatch and preempt events from the hypervisor >>> using data from Disptach Trace Log(DTL) buffer=2E With this informatio= n, >>> user can retrieve when and why each dispatch & preempt has occurred=2E >>> The vpa-dtl PMU exposes the Virtual Processor Area(VPA) DTL counters >>> via perf=2E >>>=20 >>> - Patch 1 to 6 is perf tools side code changes to enable perf >>> report/script on perf=2Edata file >>=20 >> For all patches 1 to 6: >>=20 >> Reviewed-by: Adrian Hunter > >Hi All, > >Looking for further comments if any on this patchset=2E >The kernel side patches for this feature which was sent as separate serie= s is pulled to powerpc tree by Maddy > >If the tools side changes looks good, can we have this merged to perf too= ls tree ? Sure, I'll look at it soon now that the kernel part is merged=2E - Arnaldo > >Thanks >Athira > >>=20 > - Arnaldo