Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  rcu: fix rcutorture bug
  rcu: eliminate synchronize_rcu_xxx macro
  rcu: make treercu safe for suspend and resume
  rcu: fix rcutree grace-period-latency bug on small systems
  futex: catch certain assymetric (get|put)_futex_key calls
  futex: make futex_(get|put)_key() calls symmetric
  locking, percpu counters: introduce separate lock classes
  swiotlb: clean up EXPORT_SYMBOL usage
  swiotlb: remove unnecessary declaration
  swiotlb: replace architecture-specific swiotlb.h with linux/swiotlb.h
  swiotlb: add support for systems with highmem
  swiotlb: store phys address in io_tlb_orig_addr array
  swiotlb: add hwdev to swiotlb_phys_to_bus() / swiotlb_sg_to_bus()

1 files changed, 4 insertions, 14 deletions

diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index a60bd8046095..aeaa6d734447 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -66,11 +66,11 @@ s64 __percpu_counter_sum(struct percpu_counter *fbc)
 }
 EXPORT_SYMBOL(__percpu_counter_sum);
 
-static struct lock_class_key percpu_counter_irqsafe;
-
-int percpu_counter_init(struct percpu_counter *fbc, s64 amount)
+int __percpu_counter_init(struct percpu_counter *fbc, s64 amount,
+                          struct lock_class_key *key)
 {
         spin_lock_init(&fbc->lock);
+        lockdep_set_class(&fbc->lock, key);
         fbc->count = amount;
         fbc->counters = alloc_percpu(s32);
         if (!fbc->counters)
@@ -82,17 +82,7 @@ int percpu_counter_init(struct percpu_counter *fbc, s64 amount)
 #endif
         return 0;
 }
-EXPORT_SYMBOL(percpu_counter_init);
-
-int percpu_counter_init_irq(struct percpu_counter *fbc, s64 amount)
-{
-        int err;
-
-        err = percpu_counter_init(fbc, amount);
-        if (!err)
-                lockdep_set_class(&fbc->lock, &percpu_counter_irqsafe);
-        return err;
-}
+EXPORT_SYMBOL(__percpu_counter_init);
 
 void percpu_counter_destroy(struct percpu_counter *fbc)
 {