Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dc62a30e274d003a4d08fb888f1520add4b21373
Commit: dc62a30e274d003a4d08fb888f1520add4b21373
Parent: 833f4077bf7c2dcff6e31526e03ec2ad91c88581
Author: Peter Zijlstra <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 16 23:25:46 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 08:42:44 2007 -0700
lib: percpu_counter_init_irq
provide a way to tell lockdep about percpu_counters that are supposed to be
used from irq safe contexts.
Signed-off-by: Peter Zijlstra <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/linux/percpu_counter.h | 3 +++
lib/percpu_counter.c | 12 ++++++++++++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index f7ecd38..9007ccd 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -31,6 +31,7 @@ struct percpu_counter {
#endif
int percpu_counter_init(struct percpu_counter *fbc, s64 amount);
+int percpu_counter_init_irq(struct percpu_counter *fbc, s64 amount);
void percpu_counter_destroy(struct percpu_counter *fbc);
void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
@@ -84,6 +85,8 @@ static inline int percpu_counter_init(struct percpu_counter
*fbc, s64 amount)
return 0;
}
+#define percpu_counter_init_irq percpu_counter_init
+
static inline void percpu_counter_destroy(struct percpu_counter *fbc)
{
}
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index 3a59d84..9659eab 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -68,6 +68,8 @@ 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)
{
spin_lock_init(&fbc->lock);
@@ -84,6 +86,16 @@ int percpu_counter_init(struct percpu_counter *fbc, s64
amount)
}
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;
+}
+
void percpu_counter_destroy(struct percpu_counter *fbc)
{
if (!fbc->counters)
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
