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[73.224.175.84]) by smtp.gmail.com with ESMTPSA id 00721157ae682-70f8abee777sm31663287b3.40.2025.06.04.14.21.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Jun 2025 14:21:29 -0700 (PDT) From: Yury Norov To: linux-kernel@vger.kernel.org, Yury Norov , Rasmus Villemoes , John Stultz , Thomas Gleixner , Stephen Boyd , Andrew Morton Subject: [PATCH 2/3] cpumask: introduce cpumask_random() Date: Wed, 4 Jun 2025 17:21:22 -0400 Message-ID: <20250604212125.25656-3-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250604212125.25656-1-yury.norov@gmail.com> References: <20250604212125.25656-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yury Norov [NVIDIA] Propagate find_random_bit() to cpumask API. Signed-off-by: Yury Norov [NVIDIA] --- include/linux/cpumask.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index ede95bbe8b80..4d3505acb5e0 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -354,6 +354,18 @@ unsigned int cpumask_next_wrap(int n, const struct cpu= mask *src) return find_next_bit_wrap(cpumask_bits(src), small_cpumask_bits, n + 1); } =20 +/** + * cpumask_random - get random cpu in *src. + * @src: cpumask pointer + * + * Return: random set bit, or >=3D nr_cpu_ids if @src is empty. + */ +static __always_inline +unsigned int cpumask_random(const struct cpumask *src) +{ + return find_random_bit(cpumask_bits(src), nr_cpu_ids); +} + /** * for_each_cpu - iterate over every cpu in a mask * @cpu: the (optionally unsigned) integer iterator --=20 2.43.0