{"id":2228572,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2228572/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427044715.559137-2-sshegde@linux.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.2/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260427044715.559137-2-sshegde@linux.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260427044715.559137-2-sshegde@linux.ibm.com/","date":"2026-04-27T04:47:12","name":"[v2,1/4] powerpc: Use cpumask_next_wrap instead","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"af2e8ffccc1fe916179d4159d6d8d2dadbed4994","submitter":{"id":87866,"url":"http://patchwork.ozlabs.org/api/1.2/people/87866/?format=json","name":"Shrikanth Hegde","email":"sshegde@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427044715.559137-2-sshegde@linux.ibm.com/mbox/","series":[{"id":501570,"url":"http://patchwork.ozlabs.org/api/1.2/series/501570/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501570","date":"2026-04-27T04:47:11","name":"powerpc: A few misc cpumask changes","version":2,"mbox":"http://patchwork.ozlabs.org/series/501570/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228572/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228572/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n 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","To":"maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, yury.norov@gmail.com,\n linux@rasmusvillemoes.dk, linux-kernel@vger.kernel.org","Cc":"sshegde@linux.ibm.com, chleroy@kernel.org, Yury Norov ","Subject":"[PATCH v2 1/4] powerpc: Use cpumask_next_wrap instead","Date":"Mon, 27 Apr 2026 10:17:12 +0530","Message-ID":"<20260427044715.559137-2-sshegde@linux.ibm.com>","X-Mailer":"git-send-email 2.51.0","In-Reply-To":"<20260427044715.559137-1-sshegde@linux.ibm.com>","References":"<20260427044715.559137-1-sshegde@linux.ibm.com>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-TM-AS-GCONF":"00","X-Proofpoint-Reinject":"loops=2 maxloops=12","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDI3MDA0OCBTYWx0ZWRfX6Wg8xyUMudNR\n 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engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-27_01,2026-04-21_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 spamscore=0\n priorityscore=1501 malwarescore=0 clxscore=1015 lowpriorityscore=0\n impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2604270048","X-Spam-Status":"No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"cpu = cpumask_next(cpu, mask)\nif (cpu >= nr_cpu_ids)\n cpu = cpumask_first(mask)\n\nAbove block is identical to:\ncpu = cpumask_next_wrap(cpu, mask)\n\nReplace it, No change in functionality or performance.\nSlightly simpler code.\n\nReviewed-by: Yury Norov \nSigned-off-by: Shrikanth Hegde \n---\n arch/powerpc/kernel/irq.c | 5 +----\n arch/powerpc/mm/book3s64/hash_utils.c | 4 +---\n 2 files changed, 2 insertions(+), 7 deletions(-)","diff":"diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c\nindex a0e8b998c9b5..f69de08ad347 100644\n--- a/arch/powerpc/kernel/irq.c\n+++ b/arch/powerpc/kernel/irq.c\n@@ -370,10 +370,7 @@ int irq_choose_cpu(const struct cpumask *mask)\n do_round_robin:\n \t\traw_spin_lock_irqsave(&irq_rover_lock, flags);\n \n-\t\tirq_rover = cpumask_next(irq_rover, cpu_online_mask);\n-\t\tif (irq_rover >= nr_cpu_ids)\n-\t\t\tirq_rover = cpumask_first(cpu_online_mask);\n-\n+\t\tirq_rover = cpumask_next_wrap(irq_rover, cpu_online_mask);\n \t\tcpuid = irq_rover;\n \n \t\traw_spin_unlock_irqrestore(&irq_rover_lock, flags);\ndiff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c\nindex 9dc5889d6ecb..e4fcf929cb33 100644\n--- a/arch/powerpc/mm/book3s64/hash_utils.c\n+++ b/arch/powerpc/mm/book3s64/hash_utils.c\n@@ -1299,9 +1299,7 @@ static void stress_hpt_timer_fn(struct timer_list *timer)\n \tif (!firmware_has_feature(FW_FEATURE_LPAR))\n \t\ttlbiel_all();\n \n-\tnext_cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);\n-\tif (next_cpu >= nr_cpu_ids)\n-\t\tnext_cpu = cpumask_first(cpu_online_mask);\n+\tnext_cpu = cpumask_next_wrap(raw_smp_processor_id(), cpu_online_mask);\n \tstress_hpt_timer.expires = jiffies + msecs_to_jiffies(10);\n \tadd_timer_on(&stress_hpt_timer, next_cpu);\n }\n","prefixes":["v2","1/4"]}