[PATCH v2 1/8] sched: introduce for_each_process_rculock and for_each_thread_rculock

Gregory Price gourry at gourry.net
Mon Sep 7 15:42:22 UTC 2026


On Mon, Sep 07, 2026 at 04:13:27PM +0800, Ye Liu wrote:
> From: Ye Liu <liuye at kylinos.cn>
> 
> Introduce for_each_process_rculock(), for_each_thread_rculock() and
> for_each_process_thread_rculock() macros that acquire the RCU read
> lock before the iteration starts and release it when the loop is left,
> so that the RCU read-side critical section is scoped to the loop body
> instead of an externally managed rcu_read_lock()/rcu_read_unlock()
> pair.
> 
> Signed-off-by: Ye Liu <liuye at kylinos.cn>
> Acked-by: Michal Hocko <mhocko at suse.com>

Lorenzo already picked up the nits, this is really nice otherwise.

Reviewed-by: Gregory Price (Meta) <gourry at gourry.net>




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