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Wed, 19 Nov 2025 12:45:16 +0000 (GMT) From: Shrikanth Hegde To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: sshegde@linux.ibm.com, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, tglx@linutronix.de, yury.norov@gmail.com, maddy@linux.ibm.com, srikar@linux.ibm.com, gregkh@linuxfoundation.org, pbonzini@redhat.com, seanjc@google.com, kprateek.nayak@amd.com, vschneid@redhat.com, iii@linux.ibm.com, huschle@linux.ibm.com, rostedt@goodmis.org, dietmar.eggemann@arm.com, christophe.leroy@csgroup.eu Subject: [PATCH 05/17] sched/fair: Add paravirt movements for proc sched file Date: Wed, 19 Nov 2025 18:14:37 +0530 Message-ID: <20251119124449.1149616-6-sshegde@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251119124449.1149616-1-sshegde@linux.ibm.com> References: <20251119124449.1149616-1-sshegde@linux.ibm.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-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=C/nkCAP+ c=1 sm=1 tr=0 ts=691dbbe6 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=FUalwe2TsurscZgBbnMA:9 X-Proofpoint-GUID: gaWUoPw4S5KTptjxqjoaS2lWiB8Tx4uz X-Proofpoint-ORIG-GUID: N_DZVbVWQSsFWy0hr8Cgb8L1Uvo87vgg X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE1MDAzMiBTYWx0ZWRfX7Bwj74U1hBc9 TGDdDs6Dattv9XxEeKJOeeTRit/p/04ccUw7OGWtmBTzxz7q76iGT1bAhyMQgDnyzQdlJ6MfrSz i6+695XdTmDafUO9rcIHPEtwu1nKo/BJ1lncHsSkn+795EOQuvD0uS4STKhi4DpITFzn/Ibkk7a cQV6hyc8Ok5rgUadL0EBX0JoH2Dm3VVTFTExlklf10dMWUClWRnR3AytjanIqDumUg1Juk5mWku 8dDZBqVCYxFhYLOyxTLIyhLRMCTwdzO9Wdnk05Br3M0Gcl1e5jScjD+Xg6W7rzIJkembayYk43g LoFRhY6UJRWY6P2ywov1OZVlCYKOxAzwrt6aVJJPMViIfcGAJ570rbgdH7evgp5xyjHj4cHwp65 swvg3LKW5OAJI147CPWHUojbT5DEiA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-19_03,2025-11-18_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 spamscore=0 impostorscore=0 bulkscore=0 malwarescore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511150032 Add couple of new stats. - nr_migrations_paravirt: number of migrations due to current task being moved out of paravirt CPU. - nr_wakeups_paravirt - number of wakeups where previous CPU was marked as paravirt and hence task is being woken up on current CPU. Signed-off-by: Shrikanth Hegde --- include/linux/sched.h | 2 ++ kernel/sched/debug.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/include/linux/sched.h b/include/linux/sched.h index f802bfd7120f..3628edd1468b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -549,6 +549,7 @@ struct sched_statistics { u64 nr_failed_migrations_running; u64 nr_failed_migrations_hot; u64 nr_forced_migrations; + u64 nr_migrations_paravirt; u64 nr_wakeups; u64 nr_wakeups_sync; @@ -557,6 +558,7 @@ struct sched_statistics { u64 nr_wakeups_remote; u64 nr_wakeups_affine; u64 nr_wakeups_affine_attempts; + u64 nr_wakeups_paravirt; #ifdef CONFIG_SCHED_CORE u64 core_forceidle_sum; diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 2cb3ffc653df..0e7d08514148 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -1186,6 +1186,7 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns, P_SCHEDSTAT(nr_failed_migrations_running); P_SCHEDSTAT(nr_failed_migrations_hot); P_SCHEDSTAT(nr_forced_migrations); + P_SCHEDSTAT(nr_migrations_paravirt); P_SCHEDSTAT(nr_wakeups); P_SCHEDSTAT(nr_wakeups_sync); P_SCHEDSTAT(nr_wakeups_migrate); @@ -1193,6 +1194,7 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns, P_SCHEDSTAT(nr_wakeups_remote); P_SCHEDSTAT(nr_wakeups_affine); P_SCHEDSTAT(nr_wakeups_affine_attempts); + P_SCHEDSTAT(nr_wakeups_paravirt); avg_atom = p->se.sum_exec_runtime; if (nr_switches) -- 2.47.3