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kthread: add kthread_stop_put

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Add a kthread_stop_put() helper that stops a thread and puts its task
struct.  Use it to replace the various instances of kthread_stop()
followed by put_task_struct().

Remove the kthread_stop_put() macro in usbip that is similar but doesn't
return the result of kthread_stop().

[agruenba@redhat.com: fix kerneldoc comment]
  Link: https://lkml.kernel.org/r/20230911111730.2565537-1-agruenba@redhat.com
[akpm@linux-foundation.org: document kthread_stop_put()'s argument]
Link: https://lkml.kernel.org/r/20230907234048.2499820-1-agruenba@redhat.com
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Andreas Gruenbacher
2023-09-08 01:40:48 +02:00
committed by Andrew Morton
parent ed5378a387
commit 6309727ef2
13 changed files with 38 additions and 46 deletions
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include/linux/kthread.h
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@@ -86,6 +86,7 @@ void free_kthread_struct(struct task_struct *k);
void kthread_bind(struct task_struct *k, unsigned int cpu);
void kthread_bind_mask(struct task_struct *k, const struct cpumask *mask);
int kthread_stop(struct task_struct *k);
int kthread_stop_put(struct task_struct *k);
bool kthread_should_stop(void);
bool kthread_should_park(void);
bool kthread_should_stop_or_park(void);