netpoll: Use lockdep to assert IRQs are disabled/enabled

Use lockdep to check that IRQs are enabled or disabled as expected. This
way the sanity check only shows overhead when concurrency correctness
debug code is enabled.

Signed-off-by: Frederic Weisbecker <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Tejun Heo <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 912731bed7b71b9208f3947b49c4b93922f7ab0d..57557a6a950cc9cdff959391576a03381d328c1a 100644 (file)
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -334,7 +334,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
        /* It is up to the caller to keep npinfo alive. */
        struct netpoll_info *npinfo;
 
-       WARN_ON_ONCE(!irqs_disabled());
+       lockdep_assert_irqs_disabled();
 
        npinfo = rcu_dereference_bh(np->dev->npinfo);
        if (!npinfo || !netif_running(dev) || !netif_device_present(dev)) {