Messages in this thread Patch in this message | | | Subject | [PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD | From | Peter Zijlstra <> | Date | Sat, 28 Oct 2006 16:27:39 +0200 |
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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 <a.p.zijlstra@chello.nl> --- drivers/bluetooth/bluecard_cs.c | 2 +- drivers/message/i2o/exec-osm.c | 2 +- drivers/scsi/dpt/dpti_i2o.h | 2 +- drivers/scsi/imm.c | 2 +- drivers/scsi/lpfc/lpfc_hbadisc.c | 2 +- drivers/scsi/lpfc/lpfc_sli.c | 4 ++-- drivers/scsi/ppa.c | 2 +- drivers/usb/net/usbnet.c | 2 +- include/linux/wait.h | 9 +++++++++ 9 files changed, 18 insertions(+), 9 deletions(-)
Index: linux-2.6/drivers/bluetooth/bluecard_cs.c =================================================================== --- linux-2.6.orig/drivers/bluetooth/bluecard_cs.c +++ linux-2.6/drivers/bluetooth/bluecard_cs.c @@ -282,7 +282,7 @@ static void bluecard_write_wakeup(blueca clear_bit(ready_bit, &(info->tx_state)); if (bt_cb(skb)->pkt_type & 0x80) { - DECLARE_WAIT_QUEUE_HEAD(wq); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); DEFINE_WAIT(wait); unsigned char baud_reg; Index: linux-2.6/drivers/message/i2o/exec-osm.c =================================================================== --- linux-2.6.orig/drivers/message/i2o/exec-osm.c +++ linux-2.6/drivers/message/i2o/exec-osm.c @@ -124,7 +124,7 @@ static void i2o_exec_wait_free(struct i2 int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg, unsigned long timeout, struct i2o_dma *dma) { - DECLARE_WAIT_QUEUE_HEAD(wq); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); struct i2o_exec_wait *wait; static u32 tcntxt = 0x80000000; unsigned long flags; Index: linux-2.6/drivers/scsi/dpt/dpti_i2o.h =================================================================== --- linux-2.6.orig/drivers/scsi/dpt/dpti_i2o.h +++ linux-2.6/drivers/scsi/dpt/dpti_i2o.h @@ -49,7 +49,7 @@ #include <linux/wait.h> typedef wait_queue_head_t adpt_wait_queue_head_t; -#define ADPT_DECLARE_WAIT_QUEUE_HEAD(wait) DECLARE_WAIT_QUEUE_HEAD(wait) +#define ADPT_DECLARE_WAIT_QUEUE_HEAD(wait) DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wait) typedef wait_queue_t adpt_wait_queue_t; /* Index: linux-2.6/drivers/scsi/imm.c =================================================================== --- linux-2.6.orig/drivers/scsi/imm.c +++ linux-2.6/drivers/scsi/imm.c @@ -1153,7 +1153,7 @@ static int __imm_attach(struct parport * { struct Scsi_Host *host; imm_struct *dev; - DECLARE_WAIT_QUEUE_HEAD(waiting); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waiting); DEFINE_WAIT(wait); int ports; int modes, ppb; Index: linux-2.6/drivers/scsi/lpfc/lpfc_hbadisc.c =================================================================== --- linux-2.6.orig/drivers/scsi/lpfc/lpfc_hbadisc.c +++ linux-2.6/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -305,7 +305,7 @@ lpfc_do_work(void *p) { struct lpfc_hba *phba = p; int rc; - DECLARE_WAIT_QUEUE_HEAD(work_waitq); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq); set_user_nice(current, -20); phba->work_wait = &work_waitq; Index: linux-2.6/drivers/scsi/lpfc/lpfc_sli.c =================================================================== --- linux-2.6.orig/drivers/scsi/lpfc/lpfc_sli.c +++ linux-2.6/drivers/scsi/lpfc/lpfc_sli.c @@ -2983,7 +2983,7 @@ lpfc_sli_issue_iocb_wait(struct lpfc_hba struct lpfc_iocbq * prspiocbq, uint32_t timeout) { - DECLARE_WAIT_QUEUE_HEAD(done_q); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); long timeleft, timeout_req = 0; int retval = IOCB_SUCCESS; uint32_t creg_val; @@ -3061,7 +3061,7 @@ int lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq, uint32_t timeout) { - DECLARE_WAIT_QUEUE_HEAD(done_q); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); DECLARE_WAITQUEUE(wq_entry, current); uint32_t timeleft = 0; int retval; Index: linux-2.6/drivers/scsi/ppa.c =================================================================== --- linux-2.6.orig/drivers/scsi/ppa.c +++ linux-2.6/drivers/scsi/ppa.c @@ -1012,7 +1012,7 @@ static LIST_HEAD(ppa_hosts); static int __ppa_attach(struct parport *pb) { struct Scsi_Host *host; - DECLARE_WAIT_QUEUE_HEAD(waiting); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waiting); DEFINE_WAIT(wait); ppa_struct *dev; int ports; Index: linux-2.6/drivers/usb/net/usbnet.c =================================================================== --- linux-2.6.orig/drivers/usb/net/usbnet.c +++ linux-2.6/drivers/usb/net/usbnet.c @@ -554,7 +554,7 @@ static int usbnet_stop (struct net_devic { 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); Index: linux-2.6/include/linux/wait.h =================================================================== --- linux-2.6.orig/include/linux/wait.h +++ linux-2.6/include/linux/wait.h @@ -79,6 +79,15 @@ struct task_struct; extern void init_waitqueue_head(wait_queue_head_t *q); +#ifdef CONFIG_LOCKDEP +# define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \ + ({ init_waitqueue_head(&name); name; }) +# define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) \ + wait_queue_head_t name = __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) +#else +# define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) DECLARE_WAIT_QUEUE_HEAD(name) +#endif + static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p) { q->flags = 0;
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