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[PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD

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kernel: INFO: trying to register non-static key.
kernel: the code is fine but needs lockdep annotation.
kernel: turning off the locking correctness validator.
kernel:  [<c04051ed>] show_trace_log_lvl+0x58/0x16a
kernel:  [<c04057fa>] show_trace+0xd/0x10
kernel:  [<c0405913>] dump_stack+0x19/0x1b
kernel:  [<c043b1e2>] __lock_acquire+0xf0/0x90d
kernel:  [<c043bf70>] lock_acquire+0x4b/0x6b
kernel:  [<c061472f>] _spin_lock_irqsave+0x22/0x32
kernel:  [<c04363d3>] prepare_to_wait+0x17/0x4b
kernel:  [<f89a24b6>] lpfc_do_work+0xdd/0xcc2 [lpfc]
kernel:  [<c04361b9>] kthread+0xc3/0xf2
kernel:  [<c0402005>] kernel_thread_helper+0x5/0xb

Another case of non-static lockdep keys; duplicate the paradigm set by
DECLARE_COMPLETION_ONSTACK and introduce DECLARE_WAIT_QUEUE_HEAD_ONSTACK.

Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Markus Lidel <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Arjan van de Ven <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Peter Zijlstra 2006-10-29 22:46:36 -08:00 • committed by Linus Torvalds
commit 7259f0d05d
9 changed files with 18 additions and 9 deletions
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2
drivers/usb/net/usbnet.c
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@ -554,7 +554,7 @@ static int usbnet_stop (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
int temp;
DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
DECLARE_WAIT_QUEUE_HEAD_ONSTACK (unlink_wakeup);
DECLARE_WAITQUEUE (wait, current);
netif_stop_queue (net);