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| author | Eric W. Biederman <ebiederm@xmission.com> | 2021-12-03 18:42:49 +0100 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2021-12-13 19:04:46 +0100 |
| commit | 6b1248798eb6f6d5285db214299996ecc5dc1e6b (patch) | |
| tree | 82070262292fd8092903dad833453a3644398a40 /kernel/kthread.c | |
| parent | kthread: Ensure struct kthread is present for all kthreads (diff) | |
| download | linux-6b1248798eb6f6d5285db214299996ecc5dc1e6b.tar.xz linux-6b1248798eb6f6d5285db214299996ecc5dc1e6b.zip | |
exit/kthread: Move the exit code for kernel threads into struct kthread
The exit code of kernel threads has different semantics than the
exit_code of userspace tasks. To avoid confusion and allow
the userspace implementation to change as needed move
the kernel thread exit code into struct kthread.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/kthread.c')
| -rw-r--r-- | kernel/kthread.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index 8e5f44bed027..9c6c532047c4 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -52,6 +52,7 @@ struct kthread_create_info struct kthread { unsigned long flags; unsigned int cpu; + int result; int (*threadfn)(void *); void *data; mm_segment_t oldfs; @@ -287,7 +288,9 @@ EXPORT_SYMBOL_GPL(kthread_parkme); */ void __noreturn kthread_exit(long result) { - do_exit(result); + struct kthread *kthread = to_kthread(current); + kthread->result = result; + do_exit(0); } /** @@ -679,7 +682,7 @@ int kthread_stop(struct task_struct *k) kthread_unpark(k); wake_up_process(k); wait_for_completion(&kthread->exited); - ret = k->exit_code; + ret = kthread->result; put_task_struct(k); trace_sched_kthread_stop_ret(ret); |