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Fri, 26 Sep 2025 04:54:16 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5FF402004B; Fri, 26 Sep 2025 04:54:16 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4BBAE20040; Fri, 26 Sep 2025 04:54:10 +0000 (GMT) Received: from smtpclient.apple (unknown [9.61.255.144]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTPS; Fri, 26 Sep 2025 04:54:09 +0000 (GMT) Content-Type: text/plain; charset=utf-8 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51\)) Subject: Re: [PATCH V3 0/6] perf/tools: Add interface to expose vpa dtl From: Athira Rajeev In-Reply-To: <7EE7DD5B-6550-436B-A799-2B1DF293121E@gmail.com> Date: Fri, 26 Sep 2025 10:23:56 +0530 Cc: Adrian Hunter , Ian Rogers , Namhyung Kim , Arnaldo Carvalho de Melo , 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 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20250916052536.93911-1-atrajeev@linux.ibm.com> <6BB167B7-6479-44E7-9175-E67E500DB9E2@linux.ibm.com> <7EE7DD5B-6550-436B-A799-2B1DF293121E@gmail.com> To: Arnaldo Carvalho de Melo X-Mailer: Apple Mail (2.3776.700.51) X-TM-AS-GCONF: 00 X-Proofpoint-GUID: LSZL-YOChOuAXmOKLRmXU9URqaxjpGlS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTI1MDE3NCBTYWx0ZWRfX4uk8JQtsTb/P ZidDKmt3AMx/Kv68lzaxFNIAiO+901YpzZKK2OGh1xBd7Ao/zmnvxEkdt465Nu3ThZB2n1QEN2w vkBxWDZf0IjJwHbUIiaq3TEyyXW/owUN8aZillWdU4nu0eEaiPKQj+MvzbiRh/vM3TC25zymB7E kGjm7dnHpgpz46PSI4nOrq1qXWY38WrvjBP8mWVuVdPhY2eBga4Fiva36AHpOTCqjFOr5aQEQiO RUAZejLY6RQdUnfqejbwJQHLC765DWDjEgKlLOBjMXZFj2mWiKANco99Kq8Gv9oLn1EuZfXAotG +eKgR2Hw+jIsxkVL3mJrQD++emeb0fx6dc+0EBwga4wYFuLRzuoSa1zhi86lV8uZNtdCsHJoreE OH6idNcBM9OvleEUe3i7ruMNvLu9Cw== X-Proofpoint-ORIG-GUID: Bopzy9ifQjE2ddeuvga69D4CkbwuHUr6 X-Authority-Analysis: v=2.4 cv=B6W0EetM c=1 sm=1 tr=0 ts=68d61c7d cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=pGLkceISAAAA:8 a=VnNF1IyMAAAA:8 a=QyXUC8HyAAAA:8 a=9KmrnSt_NXlnFdTC1FQA:9 a=QEXdDO2ut3YA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-26_01,2025-09-25_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 phishscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2509150000 definitions=main-2509250174 > On 25 Sep 2025, at 9:57=E2=80=AFPM, Arnaldo Carvalho de Melo = wrote: >=20 >=20 >=20 > On September 25, 2025 6:21:19 PM GMT+02:00, Athira Rajeev = wrote: >>=20 >>=20 >>> 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. With this = information, >>>> user can retrieve when and why each dispatch & preempt has = occurred. >>>> The vpa-dtl PMU exposes the Virtual Processor Area(VPA) DTL = counters >>>> via perf. >>>>=20 >>>> - Patch 1 to 6 is perf tools side code changes to enable perf >>>> report/script on perf.data file >>>=20 >>> For all patches 1 to 6: >>>=20 >>> Reviewed-by: Adrian Hunter >>=20 >> Hi All, >>=20 >> Looking for further comments if any on this patchset. >> The kernel side patches for this feature which was sent as separate = series is pulled to powerpc tree by Maddy >>=20 >> If the tools side changes looks good, can we have this merged to perf = tools tree ? >=20 >=20 > Sure, I'll look at it soon now that the kernel part is merged. >=20 > - Arnaldo Sure, thanks Arnaldo=20 Athira >>=20 >> Thanks >> Athira >>=20 >>>=20 >>=20 >=20 > - Arnaldo