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Wed, 10 Apr 2024 21:33:42 +0000 (UTC) Received: from dog.eag.rdlabs.hpecorp.net (unknown [16.231.227.39]) by p1lg14886.dc01.its.hpecorp.net (Postfix) with ESMTP id 8B482805AE8; Wed, 10 Apr 2024 21:33:29 +0000 (UTC) Received: by dog.eag.rdlabs.hpecorp.net (Postfix, from userid 48777) id DD16430000734; Wed, 10 Apr 2024 16:33:28 -0500 (CDT) From: Kyle Meyer To: linux-kernel@vger.kernel.org, yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com Cc: russ.anderson@hpe.com, dimitri.sivanich@hpe.com, steve.wahl@hpe.com, Kyle Meyer Subject: [PATCH v2 1/2] cpumask: Add for_each_cpu_from() Date: Wed, 10 Apr 2024 16:33:10 -0500 Message-Id: <20240410213311.511470-2-kyle.meyer@hpe.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20240410213311.511470-1-kyle.meyer@hpe.com> References: <20240410213311.511470-1-kyle.meyer@hpe.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: I3aY0pbpw_jtiLoNISHwocuO5VKiBCkV X-Proofpoint-GUID: I3aY0pbpw_jtiLoNISHwocuO5VKiBCkV X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-10_06,2024-04-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 priorityscore=1501 mlxscore=0 bulkscore=0 clxscore=1015 adultscore=0 suspectscore=0 spamscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2404100158 Add for_each_cpu_from() as a generic cpumask macro. for_each_cpu_from() is the same as for_each_cpu(), except it starts at @cpu instead of zero. Signed-off-by: Kyle Meyer Acked-by: Yury Norov --- include/linux/cpumask.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 1c29947db848..d75060fbd058 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -368,6 +368,16 @@ unsigned int __pure cpumask_next_wrap(int n, const struct cpumask *mask, int sta #define for_each_cpu_or(cpu, mask1, mask2) \ for_each_or_bit(cpu, cpumask_bits(mask1), cpumask_bits(mask2), small_cpumask_bits) +/** + * for_each_cpu_from - iterate over CPUs present in @mask, from @cpu to the end of @mask. + * @cpu: the (optionally unsigned) integer iterator + * @mask: the cpumask pointer + * + * After the loop, cpu is >= nr_cpu_ids. + */ +#define for_each_cpu_from(cpu, mask) \ + for_each_set_bit_from(cpu, cpumask_bits(mask), small_cpumask_bits) + /** * cpumask_any_but - return a "random" in a cpumask, but not this one. * @mask: the cpumask to search -- 2.44.0