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([145.224.119.89]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-624841586c1sm1302244d50.6.2025.09.12.08.10.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Sep 2025 08:10:58 -0700 (PDT) From: Eugen Hristev To: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, andersson@kernel.org, pmladek@suse.com, rdunlap@infradead.org, corbet@lwn.net, david@redhat.com, mhocko@suse.com Cc: tudor.ambarus@linaro.org, mukesh.ojha@oss.qualcomm.com, linux-arm-kernel@lists.infradead.org, linux-hardening@vger.kernel.org, jonechou@google.com, rostedt@goodmis.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org, Eugen Hristev Subject: [RFC][PATCH v3 13/16] sched: Add sched_get_runqueues_area Date: Fri, 12 Sep 2025 18:08:52 +0300 Message-ID: <20250912150855.2901211-14-eugen.hristev@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250912150855.2901211-1-eugen.hristev@linaro.org> References: <20250912150855.2901211-1-eugen.hristev@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 8A2791C0013 X-Stat-Signature: rmp73z5378r7814uhhpts6earyps57cj X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1757689859-270892 X-HE-Meta: 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 U2Fd/9MI Cf3XW8DR4vsafS7LTjkKKOyEeeJn/qIpt9spiLi0mXNnA4sNqOH3NwPi1DaEH3WQx751CD/kOXcxtgEebD+eKM+gUUWANmYoR9Ct6tll8R0KzDAll1PJ014J6ASDHtDI/98a6EDphGfZBbbtJ9ZeED3wnvYvO+o0XM0wG3dIjc84cNopqdHPF2+va6ulWNCibdPGHMbep7uq/oIOdiohj5xtG1YfBxHSr8vAUuhYIjvBle0CfXmBWcxA+Xe0sCiEh4cVjhv1vbuIt6LZhLPDWhTvdQw0DjcGxA7oDXirYI34H9DPVOgazhoba+t7JxYb/AU3sbIGV16VaWXmlnqLXZo3i9jVWG+Y9sldKJHq4ZQnlq6m4ULynOBwkciUdRk5oNRDPbgW5uLEHEk/J5sI4LnmXBA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add simple function to get the runqueues area and size for dumping purpose. Signed-off-by: Eugen Hristev --- kernel/sched/core.c | 15 +++++++++++++++ kernel/sched/sched.h | 2 ++ 2 files changed, 17 insertions(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 9af28286e61a..a054dd1fda68 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -120,6 +120,21 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(sched_compute_energy_tp); DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); +/** + * sched_get_runqueues_area() - obtain runqueues area for dumping + * @start: pointer to the start of the area, to be filled in + * @size: size of the area, to be filled in + * + * The obtained area is only to be used for dumping purpose + * + * Return: none + */ +void sched_get_runqueues_area(void **start, size_t *size) +{ + *start = &runqueues; + *size = sizeof(runqueues); +} + #ifdef CONFIG_SCHED_PROXY_EXEC DEFINE_STATIC_KEY_TRUE(__sched_proxy_exec); static int __init setup_proxy_exec(char *str) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index b5367c514c14..3b9cedb1fbeb 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1330,6 +1330,8 @@ DECLARE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); #define cpu_curr(cpu) (cpu_rq(cpu)->curr) #define raw_rq() raw_cpu_ptr(&runqueues) +void sched_get_runqueues_area(void **start, size_t *size); + #ifdef CONFIG_SCHED_PROXY_EXEC static inline void rq_set_donor(struct rq *rq, struct task_struct *t) { -- 2.43.0