locking, percpu counters: introduce separate lock classes

Impact: fix lockdep false positives

Classify percpu_counter instances similar to regular lock objects --
that is, per instantiation site.

The networking code has increased its use of percpu_counters, which
leads to false positives if they are treated as a single class.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/proportions.c b/lib/proportions.c
index 4f387a643d72..7367f2b727d0 100644
--- a/lib/proportions.c
+++ b/lib/proportions.c
@@ -83,11 +83,11 @@ int prop_descriptor_init(struct prop_descriptor *pd, int shift)
         pd->index = 0;
         pd->pg[0].shift = shift;
         mutex_init(&pd->mutex);
-        err = percpu_counter_init_irq(&pd->pg[0].events, 0);
+        err = percpu_counter_init(&pd->pg[0].events, 0);
         if (err)
                 goto out;
 
-        err = percpu_counter_init_irq(&pd->pg[1].events, 0);
+        err = percpu_counter_init(&pd->pg[1].events, 0);
         if (err)
                 percpu_counter_destroy(&pd->pg[0].events);
 
@@ -191,7 +191,7 @@ int prop_local_init_percpu(struct prop_local_percpu *pl)
         spin_lock_init(&pl->lock);
         pl->shift = 0;
         pl->period = 0;
-        return percpu_counter_init_irq(&pl->events, 0);
+        return percpu_counter_init(&pl->events, 0);
 }
 
 void prop_local_destroy_percpu(struct prop_local_percpu *pl)