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GET /api/1.2/patches/2228574/?format=api
{ "id": 2228574, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2228574/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427044715.559137-4-sshegde@linux.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<20260427044715.559137-4-sshegde@linux.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260427044715.559137-4-sshegde@linux.ibm.com/", "date": "2026-04-27T04:47:14", "name": "[v2,3/4] powerpc/perf: Use cpumask_intersects api for checking disable path", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5ecfb2728daab4ad84f55270c4ade85344e772ca", "submitter": { "id": 87866, "url": "http://patchwork.ozlabs.org/api/1.2/people/87866/?format=api", "name": "Shrikanth Hegde", "email": "sshegde@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427044715.559137-4-sshegde@linux.ibm.com/mbox/", "series": [ { "id": 501570, "url": "http://patchwork.ozlabs.org/api/1.2/series/501570/?format=api", "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/2228574/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2228574/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20143-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=E+uHM9ib;\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; 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lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=E+uHM9ib; dkim-atps=neutral;\n spf=pass (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sshegde@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:in-reply-to:message-id\n\t:mime-version:references:subject:to; s=pp1; bh=AwrkFtRE1229PVlMm\n\tfPTQSCJ3kikN1O8+74g//G/nHk=; b=E+uHM9ibWbEnZTcpkFM3fa6jxKzEnGgae\n\ttmH2hTp0MscvcgVT//+ONOtnEP1fGOGGxcIc4f+toefRzg5ntPGlIZ19l/fBdhwu\n\taa0qVeVvC3fIRLDVVIFwmaR1KHKimYA2SCvyzuI+6M3Km1EUqQgUvICvdBQS+3Eu\n\tZFCeCNv+fMl0vaa9wiNFz2SMzT5w7v7AwcKTZ5NO57qrddidLBo6tLhDzIM/VaJe\n\ttu93NkHGMg+WncEqnz+DVNzMsf+7jhg0xeDPeUjNBZbbttQNhcLb8ci5xm+SCdBx\n\tzQsAVN+Cv4iNKUBNIgMiaKxB+hZp309dHmAxSHtD/QH+qiVe0Zyjw==", "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 v2 3/4] powerpc/perf: Use cpumask_intersects api for checking\n disable path", "Date": "Mon, 27 Apr 2026 10:17:14 +0530", "Message-ID": "<20260427044715.559137-4-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": "<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": "AW1haW4tMjYwNDI3MDA0OCBTYWx0ZWRfX8yoTcmjqXRD1\n 7oHorMT+g/pPcsRyXA0E6EWqHQf0ERzdj2wr8nOyZIiristvc5veGcwq2/2phj1RZHAIMupb3AT\n T9TuU20fCRu4ioPumdB8ZecToA2ZNl3xX6dMckInrK8iR+kztZwInspogxqB35DYCKhZxktcVkL\n Pup+cJkh/IE4ZXpVpVZVM3pzBg2mvM+PRtqJE/iB0vQh2m1iC2rFX7Qhw5Ple5Dq0cG9rHy+j5O\n NEJQoueafAqgJgKX9Y2yFNmzCGNv0JFUIRmR8OE4JEJ7HEa7LcGAOGjlpAJ74ggCtVbhF4cAvKd\n bkOtfLucj0O/9o6OwIeHnzFt/J/c2WF07wQSgUw/ZTiKrvR97nzU0+U5d/DVkM+xfqqNzDBaYsQ\n 1xyvnS03zjJU5uK3qcIIvHzzvrU0x2sO8lIr1fT6e5+JOb+D/5aMdSXer8XZDcSEB9gVpyL5NPc\n MBmbO9wRCKt3+xljODg==", "X-Proofpoint-GUID": "c-4pnE-KqL5cD9Mfnncxa5T1iT8Tsbtd", "X-Proofpoint-ORIG-GUID": "oe5is6RcB1_lAwEYSIuPMTvT2NfoBLQ2", "X-Authority-Analysis": "v=2.4 cv=MohiLWae c=1 sm=1 tr=0 ts=69eeea6f cx=c_pps\n a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=sK8o6yvm1_ZMHGIy4kUA:9", "X-Proofpoint-Virus-Version": "vendor=baseguard\n 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": "First online CPU in the node disables the nest counters by\nmaking an OPAL call. Any other CPU in that node, will bail out.\n\nInstead of using a temporary mask to find out if any cpu in the\nnode is visited or not, it is better to use the cpumask_intersects\napi to achieve the same.\n\nSimilarly a temporary cpumask is used to check if a core is already part\nof core_imc_cpumask. Use the same cpumask_intersects api there.\n\nSigned-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>\n---\n arch/powerpc/perf/imc-pmu.c | 6 ++----\n 1 file changed, 2 insertions(+), 4 deletions(-)", "diff": "diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c\nindex c1563b4eaa94..e3822f36c419 100644\n--- a/arch/powerpc/perf/imc-pmu.c\n+++ b/arch/powerpc/perf/imc-pmu.c\n@@ -421,7 +421,6 @@ static int ppc_nest_imc_cpu_offline(unsigned int cpu)\n static int ppc_nest_imc_cpu_online(unsigned int cpu)\n {\n \tconst struct cpumask *l_cpumask;\n-\tstatic struct cpumask tmp_mask;\n \tint res;\n \n \t/* Get the cpumask of this node */\n@@ -431,7 +430,7 @@ static int ppc_nest_imc_cpu_online(unsigned int cpu)\n \t * If this is not the first online CPU on this node, then\n \t * just return.\n \t */\n-\tif (cpumask_and(&tmp_mask, l_cpumask, &nest_imc_cpumask))\n+\tif (cpumask_intersects(l_cpumask, &nest_imc_cpumask))\n \t\treturn 0;\n \n \t/*\n@@ -647,14 +646,13 @@ static bool is_core_imc_mem_inited(int cpu)\n static int ppc_core_imc_cpu_online(unsigned int cpu)\n {\n \tconst struct cpumask *l_cpumask;\n-\tstatic struct cpumask tmp_mask;\n \tint ret = 0;\n \n \t/* Get the cpumask for this core */\n \tl_cpumask = cpu_sibling_mask(cpu);\n \n \t/* If a cpu for this core is already set, then, don't do anything */\n-\tif (cpumask_and(&tmp_mask, l_cpumask, &core_imc_cpumask))\n+\tif (cpumask_intersects(l_cpumask, &core_imc_cpumask))\n \t\treturn 0;\n \n \tif (!is_core_imc_mem_inited(cpu)) {\n", "prefixes": [ "v2", "3/4" ] }