From b90ca8badbd11488e5f762346b028666808164e7 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 30 Jul 2021 12:24:33 +0100 Subject: sched: Introduce task_struct::user_cpus_ptr to track requested affinity In preparation for saving and restoring the user-requested CPU affinity mask of a task, add a new cpumask_t pointer to 'struct task_struct'. If the pointer is non-NULL, then the mask is copied across fork() and freed on task exit. Signed-off-by: Will Deacon Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Valentin Schneider Link: https://lore.kernel.org/r/20210730112443.23245-7-will@kernel.org --- init/init_task.c | 1 + 1 file changed, 1 insertion(+) (limited to 'init') diff --git a/init/init_task.c b/init/init_task.c index 562f2ef8d157..2d024066e27b 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -80,6 +80,7 @@ struct task_struct init_task .normal_prio = MAX_PRIO - 20, .policy = SCHED_NORMAL, .cpus_ptr = &init_task.cpus_mask, + .user_cpus_ptr = NULL, .cpus_mask = CPU_MASK_ALL, .nr_cpus_allowed= NR_CPUS, .mm = NULL, -- cgit v1.2.3