[PATCH 3/5] debugobjects: Don't start fill if there are remaining nodes locally

[Zhen Lei <thunder.leizhen@huawei.com>]

If the conditions for starting fill are met, it means that all cores that
call fill() later are blocked until the first core completes the fill
operation. But obviously, for a core that has free nodes locally, it does
not need to be blocked. This is good in stress situations.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 lib/debugobjects.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index aba3e62a4315f51..fc8224f9f0eda8f 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -130,10 +130,15 @@ static void fill_pool(void)
 	gfp_t gfp = __GFP_HIGH | __GFP_NOWARN;
 	struct debug_obj *obj;
 	unsigned long flags;
+	struct debug_percpu_free *percpu_pool;
 
 	if (likely(READ_ONCE(obj_pool_free) >= debug_objects_pool_min_level))
 		return;
 
+	percpu_pool = this_cpu_ptr(&percpu_obj_pool);
+	if (likely(obj_cache) && percpu_pool->obj_free > 0)
+		return;
+
 	/*
 	 * Reuse objs from the global free list; they will be reinitialized
 	 * when allocating.
-- 
2.34.1