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Merge tag 'core-debugobjects-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull debugobjects updates from Thomas Gleixner:
 "A small set of updates for debug objects:

   - Make all debug object descriptors constant. There is no reason to
     have them writeable.

   - Free the per CPU object pool after CPU unplug to avoid memory
     waste"

* tag 'core-debugobjects-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Free per CPU pool after CPU unplug
  treewide: Make all debug_obj_descriptors const
  debugobjects: Allow debug_obj_descr to be const
This commit is contained in:
Linus Torvalds
2020-10-12 11:21:24 -07:00
parent 1e6d1d9646 88451f2cd3
commit 20d49bfcc3
11 changed files with 69 additions and 43 deletions
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2
kernel/rcu/rcu.h
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@@ -167,7 +167,7 @@ static inline unsigned long rcu_seq_diff(unsigned long new, unsigned long old)
# define STATE_RCU_HEAD_READY 0
# define STATE_RCU_HEAD_QUEUED 1
extern struct debug_obj_descr rcuhead_debug_descr;
extern const struct debug_obj_descr rcuhead_debug_descr;
static inline int debug_rcu_head_queue(struct rcu_head *head)
{

2
kernel/rcu/update.c
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@@ -469,7 +469,7 @@ void destroy_rcu_head_on_stack(struct rcu_head *head)
}
EXPORT_SYMBOL_GPL(destroy_rcu_head_on_stack);
struct debug_obj_descr rcuhead_debug_descr = {
const struct debug_obj_descr rcuhead_debug_descr = {
.name = "rcu_head",
.is_static_object = rcuhead_is_static_object,
};