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debugobjects: Fix debug_objects_freed accounting 

The removal of the batched object freeing has caused the debug_objects_freed
to become read-only, and the reading is inside an ifdef, so gcc warns that it
is completely unused without CONFIG_DEBUG_FS:

lib/debugobjects.c:71:14: error: 'debug_objects_freed' defined but not used [-Werror=unused-variable]

Assuming we are still interested in this number, this adds back code to
keep track of the freed objects.

Fixes: 636e1970fd ("debugobjects: Use global free list in free_object()")
Suggested-by: Waiman Long <longman@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20180222155335.1647466-1-arnd@arndb.de
This commit is contained in:
Arnd Bergmann 2018-02-22 16:52:58 +01:00 committed by Thomas Gleixner
parent 1ea9b98b00
commit 04148187aa
1 changed files with 1 additions and 0 deletions
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lib/debugobjects.c
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@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
*/ */
if (obj_nr_tofree) { if (obj_nr_tofree) {
hlist_move_list(&obj_to_free, &tofree); hlist_move_list(&obj_to_free, &tofree);
debug_objects_freed += obj_nr_tofree;
obj_nr_tofree = 0; obj_nr_tofree = 0;
} }
raw_spin_unlock_irqrestore(&pool_lock, flags); raw_spin_unlock_irqrestore(&pool_lock, flags);