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A single commit for debugobjects to make them work on PREEMPT_RT by

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preventing object pool refill in atomic contexts.
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Merge tag 'core-debugobjects-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull debugobjects update from Thomas Gleixner:
 "A single commit for debugobjects to make them work on PREEMPT_RT by
  preventing object pool refill in atomic contexts"

* tag 'core-debugobjects-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Make them PREEMPT_RT aware
This commit is contained in:
Linus Torvalds 2021-08-30 14:06:31 -07:00
commit e4c3562e1b
1 changed files with 6 additions and 1 deletions
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7
lib/debugobjects.c
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@ -557,7 +557,12 @@ __debug_object_init(void *addr, const struct debug_obj_descr *descr, int onstack
struct debug_obj *obj;
unsigned long flags;
fill_pool();
/*
* On RT enabled kernels the pool refill must happen in preemptible
* context:
*/
if (!IS_ENABLED(CONFIG_PREEMPT_RT) || preemptible())
fill_pool();
db = get_bucket((unsigned long) addr);