diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2025-05-27 15:35:14 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2026-02-03 15:23:33 +0100 |
| commit | a7e546354d9c534dc045ce0cf9ff05d81351a751 (patch) | |
| tree | a3e931e28f73924f309b55f2a6deebff1b56297c /include | |
| parent | 622c508bcf4852ad56ae37bf6f08e9a4e6aa95b2 (diff) | |
cpuset: Provide lockdep check for cpuset lock held
cpuset modifies partitions, including isolated, while holding the cpuset
mutex.
This means that holding the cpuset mutex is safe to synchronize against
housekeeping cpumask changes.
Provide a lockdep check to validate that.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: "Michal Koutný" <mkoutny@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Marco Crivellari <marco.crivellari@suse.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Waiman Long <longman@redhat.com>
Cc: cgroups@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuset.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index a98d3330385c..1c49ffd2ca9b 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -18,6 +18,8 @@ #include <linux/mmu_context.h> #include <linux/jump_label.h> +extern bool lockdep_is_cpuset_held(void); + #ifdef CONFIG_CPUSETS /* |