Commit-ID:  04148187aa9df3626168f7429d2287997787e387
Gitweb:     https://git.kernel.org/tip/04148187aa9df3626168f7429d2287997787e387
Author:     Arnd Bergmann <[email protected]>
AuthorDate: Thu, 22 Feb 2018 16:52:58 +0100
Committer:  Thomas Gleixner <[email protected]>
CommitDate: Thu, 22 Feb 2018 22:00:24 +0100

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: 636e1970fd7d ("debugobjects: Use global free list in free_object()")
Suggested-by: Waiman Long <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Yang Shi <[email protected]>
Acked-by: Waiman Long <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

---
 lib/debugobjects.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index faab2c4..105ecfc 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
         */
        if (obj_nr_tofree) {
                hlist_move_list(&obj_to_free, &tofree);
+               debug_objects_freed += obj_nr_tofree;
                obj_nr_tofree = 0;
        }
        raw_spin_unlock_irqrestore(&pool_lock, flags);

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