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GET /api/patches/2216759/?format=api
{ "id": 2216759, "url": "http://patchwork.ozlabs.org/api/patches/2216759/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327063129.127302-2-sshegde@linux.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "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": "<20260327063129.127302-2-sshegde@linux.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260327063129.127302-2-sshegde@linux.ibm.com/", "date": "2026-03-27T06:31:28", "name": "[1/2] powerpc: Use cpumask_next_wrap instead", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "dbcc66da3a2b7f5df229f1c83efaa5e312a0bbaa", "submitter": { "id": 87866, "url": "http://patchwork.ozlabs.org/api/people/87866/?format=api", "name": "Shrikanth Hegde", "email": "sshegde@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327063129.127302-2-sshegde@linux.ibm.com/mbox/", "series": [ { "id": 497695, "url": "http://patchwork.ozlabs.org/api/series/497695/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=497695", "date": "2026-03-27T06:31:27", "name": "powerpc: A few misc cpumask refactors", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497695/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216759/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216759/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-18900-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=s9aIYS/W;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-18900-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)", "lists.ozlabs.org;\n arc=none smtp.remote-ip=148.163.158.5", "lists.ozlabs.org;\n dmarc=pass (p=none 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bh=kHrJclyx4fRkw19Bd\n\tE14EqszEcZdjrvYbNmlBV87tDk=; b=s9aIYS/WwTcrgDLHwJvSy6Il3I+5K6VFZ\n\tUZRKmCuepQnTaUflnwOGXRvk7BA6cA1NbzZsWVVZ3Gxxd94f4ZBZFHvar4q6ONXj\n\titBMvtyEbqEtQk1t8RR/wV4Ek0J3wSzPEpXjDVrzIV6NiNQxFwEFP5Ez3YN3pr3q\n\tim6ypLawQrAWjRpWCfNEPSESt9sR1ZZ1eX5K28CJwoCHuEyZFslvlne9P72OZGGB\n\t0f0hh7JuSumhG1ubys85N0WFZiT6LvwUKpd3mniMAgLkyJL1CM7NykovRIJ0sj2Q\n\tusScNqDQN6X7MMXHkB5DQtXFpkZkrjWTxws4eSe9KLNL3CnriJzzw==", "From": "Shrikanth Hegde <sshegde@linux.ibm.com>", "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", "Subject": "[PATCH 1/2] powerpc: Use cpumask_next_wrap instead", "Date": "Fri, 27 Mar 2026 12:01:28 +0530", "Message-ID": "<20260327063129.127302-2-sshegde@linux.ibm.com>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260327063129.127302-1-sshegde@linux.ibm.com>", "References": "<20260327063129.127302-1-sshegde@linux.ibm.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "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": "AW1haW4tMjYwMzI3MDA0NSBTYWx0ZWRfX57huGs15JTeP\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=2026-03-26_04,2026-03-26_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n impostorscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 adultscore=0\n spamscore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603270045", "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\nSigned-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>\n---\n arch/powerpc/kernel/irq.c | 5 +----\n arch/powerpc/mm/book3s64/hash_utils.c | 4 +---\n arch/powerpc/sysdev/xive/common.c | 5 +----\n 3 files changed, 3 insertions(+), 11 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 }\ndiff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c\nindex e1a4f8a97393..b6446abe29a6 100644\n--- a/arch/powerpc/sysdev/xive/common.c\n+++ b/arch/powerpc/sysdev/xive/common.c\n@@ -577,10 +577,7 @@ static int xive_find_target_in_mask(const struct cpumask *mask,\n \t\t */\n \t\tif (cpu_online(cpu) && xive_try_pick_target(cpu))\n \t\t\treturn cpu;\n-\t\tcpu = cpumask_next(cpu, mask);\n-\t\t/* Wrap around */\n-\t\tif (cpu >= nr_cpu_ids)\n-\t\t\tcpu = cpumask_first(mask);\n+\t\tcpu = cpumask_next_wrap(cpu, mask);\n \t} while (cpu != first);\n \n \treturn -1;\n", "prefixes": [ "1/2" ] }