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| author | Peter Zijlstra <peterz@infradead.org> | 2021-05-31 12:21:13 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-01 16:00:11 +0200 |
| commit | 15faafc6b449777a85c0cf82dd8286c293fed4eb (patch) | |
| tree | aaa65f485e131cc6f4d46219a05d9c5050b99189 /kernel/sched | |
| parent | 7b419f47facd286c6723daca6ad69ec355473f78 (diff) | |
| download | linux-stable-15faafc6b449777a85c0cf82dd8286c293fed4eb.tar.gz linux-stable-15faafc6b449777a85c0cf82dd8286c293fed4eb.tar.bz2 linux-stable-15faafc6b449777a85c0cf82dd8286c293fed4eb.zip | |
sched,init: Fix DEBUG_PREEMPT vs early boot
Extend 8fb12156b8db ("init: Pin init task to the boot CPU, initially")
to cover the new PF_NO_SETAFFINITY requirement.
While there, move wait_for_completion(&kthreadd_done) into kernel_init()
to make it absolutely clear it is the very first thing done by the init
thread.
Fixes: 570a752b7a9b ("lib/smp_processor_id: Use is_percpu_thread() instead of nr_cpus_allowed")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Tested-by: Borislav Petkov <bp@alien8.de>
Link: https://lkml.kernel.org/r/YLS4mbKUrA3Gnb4t@hirez.programming.kicks-ass.net
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3d2527239c3e..e205c191b7fb 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -8862,6 +8862,7 @@ void __init sched_init_smp(void) /* Move init over to a non-isolated CPU */ if (set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_DOMAIN)) < 0) BUG(); + current->flags &= ~PF_NO_SETAFFINITY; sched_init_granularity(); init_sched_rt_class(); |