From: Scott Wood <[email protected]> This function is concerned with the long-term cpu mask, not the transitory mask the task might have while migrate disabled. Before this patch, if a task was migrate disabled at the time __set_cpus_allowed_ptr() was called, and the new mask happened to be equal to the cpu that the task was running on, then the mask update would be lost.
Signed-off-by: Scott Wood <[email protected]> Signed-off-by: Sebastian Andrzej Siewior <[email protected]> --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1637,7 +1637,7 @@ static int __set_cpus_allowed_ptr(struct goto out; } - if (cpumask_equal(p->cpus_ptr, new_mask)) + if (cpumask_equal(&p->cpus_mask, new_mask)) goto out; /*
