13 files changed, 39 insertions, 50 deletions

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 68883565b725..f9ba7d74dfc0 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -308,7 +308,7 @@ static void ib_cache_event(struct ib_event_handler *handler,
                         INIT_WORK(&work->work, ib_cache_task);
                         work->device   = event->device;
                         work->port_num = event->element.port_num;
-                        schedule_work(&work->work);
+                        queue_work(ib_wq, &work->work);
                 }
         }
 }
@@ -368,7 +368,7 @@ static void ib_cache_cleanup_one(struct ib_device *device)
         int p;
 
         ib_unregister_event_handler(&device->cache.event_handler);
-        flush_scheduled_work();
+        flush_workqueue(ib_wq);
 
         for (p = 0; p <= end_port(device) - start_port(device); ++p) {
                 kfree(device->cache.pkey_cache[p]);
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index a19effad0811..f793bf2f5da7 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -38,7 +38,6 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
-#include <linux/workqueue.h>
 
 #include "core_priv.h"
 
@@ -52,6 +51,9 @@ struct ib_client_data {
         void *            data;
 };
 
+struct workqueue_struct *ib_wq;
+EXPORT_SYMBOL_GPL(ib_wq);
+
 static LIST_HEAD(device_list);
 static LIST_HEAD(client_list);
 
@@ -718,6 +720,10 @@ static int __init ib_core_init(void)
 {
         int ret;
 
+        ib_wq = alloc_workqueue("infiniband", 0, 0);
+        if (!ib_wq)
+                return -ENOMEM;
+
         ret = ib_sysfs_setup();
         if (ret)
                 printk(KERN_WARNING "Couldn't create InfiniBand device class\n");
@@ -726,6 +732,7 @@ static int __init ib_core_init(void)
         if (ret) {
                 printk(KERN_WARNING "Couldn't set up InfiniBand P_Key/GID cache\n");
                 ib_sysfs_cleanup();
+                destroy_workqueue(ib_wq);
         }
 
         return ret;
@@ -736,7 +743,7 @@ static void __exit ib_core_cleanup(void)
         ib_cache_cleanup();
         ib_sysfs_cleanup();
         /* Make sure that any pending umem accounting work is done. */
-        flush_scheduled_work();
+        destroy_workqueue(ib_wq);
 }
 
 module_init(ib_core_init);
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index 91a660310b7c..e38be1bcc01c 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -425,7 +425,7 @@ static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event
                 port->sm_ah = NULL;
                 spin_unlock_irqrestore(&port->ah_lock, flags);
 
-                schedule_work(&sa_dev->port[event->element.port_num -
+                queue_work(ib_wq, &sa_dev->port[event->element.port_num -
                                             sa_dev->start_port].update_task);
         }
 }
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 415e186eee32..b645e558876f 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -262,7 +262,7 @@ void ib_umem_release(struct ib_umem *umem)
                         umem->mm   = mm;
                         umem->diff = diff;
 
-                        schedule_work(&umem->work);
+                        queue_work(ib_wq, &umem->work);
                         return;
                 }
         } else
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index ae92da2d3f56..47db4bf34628 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -755,7 +755,7 @@ static void __devexit ipath_remove_one(struct pci_dev *pdev)
          */
         ipath_shutdown_device(dd);
 
-        flush_scheduled_work();
+        flush_workqueue(ib_wq);
 
         if (dd->verbs_dev)
                 ipath_unregister_ib_device(dd->verbs_dev);
diff --git a/drivers/infiniband/hw/ipath/ipath_user_pages.c b/drivers/infiniband/hw/ipath/ipath_user_pages.c
index 5e86d73eba2a..bab9f74c0665 100644
--- a/drivers/infiniband/hw/ipath/ipath_user_pages.c
+++ b/drivers/infiniband/hw/ipath/ipath_user_pages.c
@@ -220,7 +220,7 @@ void ipath_release_user_pages_on_close(struct page **p, size_t num_pages)
         work->mm = mm;
         work->num_pages = num_pages;
 
-        schedule_work(&work->work);
+        queue_work(ib_wq, &work->work);
         return;
 
 bail_mm:
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 127a0d5069f0..de799f17cb9e 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -1692,8 +1692,7 @@ static void qib_7220_quiet_serdes(struct qib_pportdata *ppd)
         ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
         spin_unlock_irqrestore(&ppd->lflags_lock, flags);
         wake_up(&ppd->cpspec->autoneg_wait);
-        cancel_delayed_work(&ppd->cpspec->autoneg_work);
-        flush_scheduled_work();
+        cancel_delayed_work_sync(&ppd->cpspec->autoneg_work);
 
         shutdown_7220_relock_poll(ppd->dd);
         val = qib_read_kreg64(ppd->dd, kr_xgxs_cfg);
@@ -3515,8 +3514,8 @@ static void try_7220_autoneg(struct qib_pportdata *ppd)
 
         toggle_7220_rclkrls(ppd->dd);
         /* 2 msec is minimum length of a poll cycle */
-        schedule_delayed_work(&ppd->cpspec->autoneg_work,
-                              msecs_to_jiffies(2));
+        queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work,
+                           msecs_to_jiffies(2));
 }
 
 /*
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index dbbb0e85afe4..ea46fbc34b17 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -2406,10 +2406,9 @@ static void qib_7322_mini_quiet_serdes(struct qib_pportdata *ppd)
         ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
         spin_unlock_irqrestore(&ppd->lflags_lock, flags);
         wake_up(&ppd->cpspec->autoneg_wait);
-        cancel_delayed_work(&ppd->cpspec->autoneg_work);
+        cancel_delayed_work_sync(&ppd->cpspec->autoneg_work);
         if (ppd->dd->cspec->r1)
-                cancel_delayed_work(&ppd->cpspec->ipg_work);
-        flush_scheduled_work();
+                cancel_delayed_work_sync(&ppd->cpspec->ipg_work);
 
         ppd->cpspec->chase_end = 0;
         if (ppd->cpspec->chase_timer.data) /* if initted */
@@ -2706,7 +2705,7 @@ static noinline void unknown_7322_gpio_intr(struct qib_devdata *dd)
                         if (!(pins & mask)) {
                                 ++handled;
                                 qd->t_insert = get_jiffies_64();
-                                schedule_work(&qd->work);
+                                queue_work(ib_wq, &qd->work);
                         }
                 }
         }
@@ -4990,8 +4989,8 @@ static void try_7322_autoneg(struct qib_pportdata *ppd)
         set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
         qib_7322_mini_pcs_reset(ppd);
         /* 2 msec is minimum length of a poll cycle */
-        schedule_delayed_work(&ppd->cpspec->autoneg_work,
-                              msecs_to_jiffies(2));
+        queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work,
+                           msecs_to_jiffies(2));
 }
 
 /*
@@ -5121,7 +5120,8 @@ static void try_7322_ipg(struct qib_pportdata *ppd)
                 ib_free_send_mad(send_buf);
 retry:
         delay = 2 << ppd->cpspec->ipg_tries;
-        schedule_delayed_work(&ppd->cpspec->ipg_work, msecs_to_jiffies(delay));
+        queue_delayed_work(ib_wq, &ppd->cpspec->ipg_work,
+                           msecs_to_jiffies(delay));
 }
 
 /*
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 304bd8038541..ffefb78b8949 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -80,7 +80,6 @@ unsigned qib_wc_pat = 1; /* default (1) is to use PAT, not MTRR */
 module_param_named(wc_pat, qib_wc_pat, uint, S_IRUGO);
 MODULE_PARM_DESC(wc_pat, "enable write-combining via PAT mechanism");
 
-struct workqueue_struct *qib_wq;
 struct workqueue_struct *qib_cq_wq;
 
 static void verify_interrupt(unsigned long);
@@ -1044,24 +1043,10 @@ static int __init qlogic_ib_init(void)
         if (ret)
                 goto bail;
 
-        /*
-         * We create our own workqueue mainly because we want to be
-         * able to flush it when devices are being removed.  We can't
-         * use schedule_work()/flush_scheduled_work() because both
-         * unregister_netdev() and linkwatch_event take the rtnl lock,
-         * so flush_scheduled_work() can deadlock during device
-         * removal.
-         */
-        qib_wq = create_workqueue("qib");
-        if (!qib_wq) {
-                ret = -ENOMEM;
-                goto bail_dev;
-        }
-
         qib_cq_wq = create_singlethread_workqueue("qib_cq");
         if (!qib_cq_wq) {
                 ret = -ENOMEM;
-                goto bail_wq;
+                goto bail_dev;
         }
 
         /*
@@ -1091,8 +1076,6 @@ bail_unit:
         idr_destroy(&qib_unit_table);
 bail_cq_wq:
         destroy_workqueue(qib_cq_wq);
-bail_wq:
-        destroy_workqueue(qib_wq);
 bail_dev:
         qib_dev_cleanup();
 bail:
@@ -1116,7 +1099,6 @@ static void __exit qlogic_ib_cleanup(void)
 
         pci_unregister_driver(&qib_driver);
 
-        destroy_workqueue(qib_wq);
         destroy_workqueue(qib_cq_wq);
 
         qib_cpulist_count = 0;
@@ -1289,7 +1271,7 @@ static int __devinit qib_init_one(struct pci_dev *pdev,
 
         if (qib_mini_init || initfail || ret) {
                 qib_stop_timers(dd);
-                flush_scheduled_work();
+                flush_workqueue(ib_wq);
                 for (pidx = 0; pidx < dd->num_pports; ++pidx)
                         dd->f_quiet_serdes(dd->pport + pidx);
                 if (qib_mini_init)
@@ -1338,8 +1320,8 @@ static void __devexit qib_remove_one(struct pci_dev *pdev)
 
         qib_stop_timers(dd);
 
-        /* wait until all of our (qsfp) schedule_work() calls complete */
-        flush_scheduled_work();
+        /* wait until all of our (qsfp) queue_work() calls complete */
+        flush_workqueue(ib_wq);
 
         ret = qibfs_remove(dd);
         if (ret)
diff --git a/drivers/infiniband/hw/qib/qib_qsfp.c b/drivers/infiniband/hw/qib/qib_qsfp.c
index 35b3604b691d..3374a52232c1 100644
--- a/drivers/infiniband/hw/qib/qib_qsfp.c
+++ b/drivers/infiniband/hw/qib/qib_qsfp.c
@@ -485,7 +485,7 @@ void qib_qsfp_init(struct qib_qsfp_data *qd,
                 goto bail;
         /* We see a module, but it may be unwise to look yet. Just schedule */
         qd->t_insert = get_jiffies_64();
-        schedule_work(&qd->work);
+        queue_work(ib_wq, &qd->work);
 bail:
         return;
 }
@@ -493,10 +493,9 @@ bail:
 void qib_qsfp_deinit(struct qib_qsfp_data *qd)
 {
         /*
-         * There is nothing to do here for now.  our
-         * work is scheduled with schedule_work(), and
-         * flush_scheduled_work() from remove_one will
-         * block until all work ssetup with schedule_work()
+         * There is nothing to do here for now.  our work is scheduled
+         * with queue_work(), and flush_workqueue() from remove_one
+         * will block until all work setup with queue_work()
          * completes.
          */
 }
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 63b22a9a7feb..95e5b47223b3 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -805,7 +805,6 @@ static inline int qib_send_ok(struct qib_qp *qp)
                  !(qp->s_flags & QIB_S_ANY_WAIT_SEND));
 }
 
-extern struct workqueue_struct *qib_wq;
 extern struct workqueue_struct *qib_cq_wq;
 
 /*
@@ -814,7 +813,7 @@ extern struct workqueue_struct *qib_cq_wq;
 static inline void qib_schedule_send(struct qib_qp *qp)
 {
         if (qib_send_ok(qp))
-                queue_work(qib_wq, &qp->s_work);
+                queue_work(ib_wq, &qp->s_work);
 }
 
 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 4b62105ed1e8..70ecb949683e 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -638,7 +638,7 @@ err:
         if (target->state == SRP_TARGET_CONNECTING) {
                 target->state = SRP_TARGET_DEAD;
                 INIT_WORK(&target->work, srp_remove_work);
-                schedule_work(&target->work);
+                queue_work(ib_wq, &target->work);
         }
         spin_unlock_irq(&target->lock);
 
@@ -2199,7 +2199,7 @@ static void srp_remove_one(struct ib_device *device)
                  * started before we marked our target ports as
                  * removed, and any target port removal tasks.
                  */
-                flush_scheduled_work();
+                flush_workqueue(ib_wq);
 
                 list_for_each_entry_safe(target, tmp_target,
                                          &host->target_list, list) {
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index e04c4888d1fd..55cd0a0bc977 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -47,10 +47,13 @@
 #include <linux/list.h>
 #include <linux/rwsem.h>
 #include <linux/scatterlist.h>
+#include <linux/workqueue.h>
 
 #include <asm/atomic.h>
 #include <asm/uaccess.h>
 
+extern struct workqueue_struct *ib_wq;
+
 union ib_gid {
         u8      raw[16];
         struct {