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Wed, 11 Nov 2026 08:00:10 +0000 (GMT) Received: from li-7bb28a4c-2dab-11b2-a85c-887b5c60d769.ibm.com.com (unknown [9.124.213.92]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 11 Nov 2026 08:00:09 +0000 (GMT) From: Shrikanth Hegde To: linux-kernel@vger.kernel.org, yury.norov@gmail.com, linux-perf-users@vger.kernel.org Cc: sshegde@linux.ibm.com, mingo@kernel.org, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, tglx@kernel.org, sudeep.holla@kernel.org, linux@rasmusvillemoes.dk Subject: [PATCH 5/5] arch_topology: Use cpumask_intersects where applicable Date: Wed, 11 Nov 2026 13:29:45 +0530 Message-ID: <20261111075945.3930230-6-sshegde@linux.ibm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261111075945.3930230-1-sshegde@linux.ibm.com> References: <20261111075945.3930230-1-sshegde@linux.ibm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: 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-Info: AW1haW4tMjYxMTExMDAzMCBTYWx0ZWRfXzZmDdS0aT/ed CfKpFbXGSm2eJCoyHBYCE4galpN8Ld6k7Ts0ImVHyaHwySu3V2d3MDQmwkExknOEX8ujOFk7l0r x6WEfvo9hUMfxmikxnE/iPDw5gQpVzc= X-Authority-Analysis: v=2.4 cv=HbCB3SE8 c=1 sm=1 tr=0 ts=6af42090 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=uJxkfRzq51vS_ux11qQA:9 a=zgiPjhLxNE0A:10 X-Proofpoint-ORIG-GUID: 7zP5uU-1Aa0LTOcyOQdoFvxlg2JizBXk X-Proofpoint-GUID: B1KQ_xpQKmmMDNf16mZgISFFsqLBMyp0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTExMDAzMCBTYWx0ZWRfXxGXnak6fxP04 5B62j4qfi0+O8+HNequ7Y2KX/W0YSXOmL8qX90tDHVHjp2kWrnChGFAIKN7D/Rg6YZyIU7cOQiS AXYOlpS289EBa2PrduiE1xeVdc+7FtRTEjB7zHJA+m3e2ddfTI/UC93naVj1ppV1DFzyKukcafK gyO7LTRodAt9FXTAfcXiAmM8VOJzwW91zkOm86+5V711lVji3w0IFsnhpvFi0VoXbA/T+7oPfSb 8CJdvCDoJx1o8vpDzPiS256RPyUpXcg7myJC+03GdU79ey65FixWr9r/Mdq9/VABWSEB46uoBqk 5UafKu5dTss6wWCMdTJtXfOMi8fNZ4E37rMsfFj54eIu8i8iS3HGGqLbmtCsP1Zw0sUP0hoKilD nrmieUih6Kf76lQZVyRG9vRkydIbhXjiiHVi7RtEzRgzCJ9HMILyCPvTKtLO2/ETKd8cdOCVn1e gD6BscttuuVr9HUJWXg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-11_02,2026-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 spamscore=0 bulkscore=0 phishscore=0 impostorscore=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611110030 Looping over one cpumask and checking if any bit is set in another cpumask is same as evaluating if two cpumasks intersects or not. So use cpumask_intersects instead. It is probably faster too. Signed-off-by: Shrikanth Hegde --- drivers/base/arch_topology.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 8c5e47c28d9a..aba86e9c2516 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -34,14 +34,7 @@ EXPORT_PER_CPU_SYMBOL_GPL(capacity_freq_ref); static bool supports_scale_freq_counters(const struct cpumask *cpus) { - int i; - - for_each_cpu(i, cpus) { - if (cpumask_test_cpu(i, &scale_freq_counters_mask)) - return true; - } - - return false; + return cpumask_intersects(cpus, &scale_freq_counters_mask); } bool topology_scale_freq_invariant(void) -- 2.52.0