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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 20:54:49 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 20:54:49 +0400
commit033d9959ed2dc1029217d4165f80a71702dc578e (patch)
tree3d306316e44bdabce2e0bf2ef7e466e525f90b4c /drivers/infiniband
parent974a847e00cf3ff1695e62b276892137893706ab (diff)
parent7c6e72e46c9ea4a88f3f8ba96edce9db4bd48726 (diff)
downloadlinux-033d9959ed2dc1029217d4165f80a71702dc578e.tar.xz
Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue changes from Tejun Heo: "This is workqueue updates for v3.7-rc1. A lot of activities this round including considerable API and behavior cleanups. * delayed_work combines a timer and a work item. The handling of the timer part has always been a bit clunky leading to confusing cancelation API with weird corner-case behaviors. delayed_work is updated to use new IRQ safe timer and cancelation now works as expected. * Another deficiency of delayed_work was lack of the counterpart of mod_timer() which led to cancel+queue combinations or open-coded timer+work usages. mod_delayed_work[_on]() are added. These two delayed_work changes make delayed_work provide interface and behave like timer which is executed with process context. * A work item could be executed concurrently on multiple CPUs, which is rather unintuitive and made flush_work() behavior confusing and half-broken under certain circumstances. This problem doesn't exist for non-reentrant workqueues. While non-reentrancy check isn't free, the overhead is incurred only when a work item bounces across different CPUs and even in simulated pathological scenario the overhead isn't too high. All workqueues are made non-reentrant. This removes the distinction between flush_[delayed_]work() and flush_[delayed_]_work_sync(). The former is now as strong as the latter and the specified work item is guaranteed to have finished execution of any previous queueing on return. * In addition to the various bug fixes, Lai redid and simplified CPU hotplug handling significantly. * Joonsoo introduced system_highpri_wq and used it during CPU hotplug. There are two merge commits - one to pull in IRQ safe timer from tip/timers/core and the other to pull in CPU hotplug fixes from wq/for-3.6-fixes as Lai's hotplug restructuring depended on them." Fixed a number of trivial conflicts, but the more interesting conflicts were silent ones where the deprecated interfaces had been used by new code in the merge window, and thus didn't cause any real data conflicts. Tejun pointed out a few of them, I fixed a couple more. * 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (46 commits) workqueue: remove spurious WARN_ON_ONCE(in_irq()) from try_to_grab_pending() workqueue: use cwq_set_max_active() helper for workqueue_set_max_active() workqueue: introduce cwq_set_max_active() helper for thaw_workqueues() workqueue: remove @delayed from cwq_dec_nr_in_flight() workqueue: fix possible stall on try_to_grab_pending() of a delayed work item workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback() workqueue: use __cpuinit instead of __devinit for cpu callbacks workqueue: rename manager_mutex to assoc_mutex workqueue: WORKER_REBIND is no longer necessary for idle rebinding workqueue: WORKER_REBIND is no longer necessary for busy rebinding workqueue: reimplement idle worker rebinding workqueue: deprecate __cancel_delayed_work() workqueue: reimplement cancel_delayed_work() using try_to_grab_pending() workqueue: use mod_delayed_work() instead of __cancel + queue workqueue: use irqsafe timer for delayed_work workqueue: clean up delayed_work initializers and add missing one workqueue: make deferrable delayed_work initializer names consistent workqueue: cosmetic whitespace updates for macro definitions workqueue: deprecate system_nrt[_freezable]_wq workqueue: deprecate flush[_delayed]_work_sync() ...
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/addr.c4
-rw-r--r--drivers/infiniband/core/mad.c16
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.c6
-rw-r--r--drivers/infiniband/hw/nes/nes_nic.c5
4 files changed, 11 insertions, 20 deletions
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 28058ae33d38..eaec8d7a3b73 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -152,13 +152,11 @@ static void set_timeout(unsigned long time)
{
unsigned long delay;
- cancel_delayed_work(&work);
-
delay = time - jiffies;
if ((long)delay <= 0)
delay = 1;
- queue_delayed_work(addr_wq, &work, delay);
+ mod_delayed_work(addr_wq, &work, delay);
}
static void queue_req(struct addr_req *req)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index b0d0bc8a6fb6..dc3fd1e8af07 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2004,7 +2004,7 @@ static void adjust_timeout(struct ib_mad_agent_private *mad_agent_priv)
unsigned long delay;
if (list_empty(&mad_agent_priv->wait_list)) {
- __cancel_delayed_work(&mad_agent_priv->timed_work);
+ cancel_delayed_work(&mad_agent_priv->timed_work);
} else {
mad_send_wr = list_entry(mad_agent_priv->wait_list.next,
struct ib_mad_send_wr_private,
@@ -2013,13 +2013,11 @@ static void adjust_timeout(struct ib_mad_agent_private *mad_agent_priv)
if (time_after(mad_agent_priv->timeout,
mad_send_wr->timeout)) {
mad_agent_priv->timeout = mad_send_wr->timeout;
- __cancel_delayed_work(&mad_agent_priv->timed_work);
delay = mad_send_wr->timeout - jiffies;
if ((long)delay <= 0)
delay = 1;
- queue_delayed_work(mad_agent_priv->qp_info->
- port_priv->wq,
- &mad_agent_priv->timed_work, delay);
+ mod_delayed_work(mad_agent_priv->qp_info->port_priv->wq,
+ &mad_agent_priv->timed_work, delay);
}
}
}
@@ -2052,11 +2050,9 @@ static void wait_for_response(struct ib_mad_send_wr_private *mad_send_wr)
list_add(&mad_send_wr->agent_list, list_item);
/* Reschedule a work item if we have a shorter timeout */
- if (mad_agent_priv->wait_list.next == &mad_send_wr->agent_list) {
- __cancel_delayed_work(&mad_agent_priv->timed_work);
- queue_delayed_work(mad_agent_priv->qp_info->port_priv->wq,
- &mad_agent_priv->timed_work, delay);
- }
+ if (mad_agent_priv->wait_list.next == &mad_send_wr->agent_list)
+ mod_delayed_work(mad_agent_priv->qp_info->port_priv->wq,
+ &mad_agent_priv->timed_work, delay);
}
void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index d42c9f435b1b..9e0895b45eb8 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -2679,11 +2679,9 @@ static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number)
}
}
if (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_SFP_D) {
- if (nesdev->link_recheck)
- cancel_delayed_work(&nesdev->work);
nesdev->link_recheck = 1;
- schedule_delayed_work(&nesdev->work,
- NES_LINK_RECHECK_DELAY);
+ mod_delayed_work(system_wq, &nesdev->work,
+ NES_LINK_RECHECK_DELAY);
}
}
diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index f3a3ecf8d09e..e43f6e41a6bd 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -243,10 +243,9 @@ static int nes_netdev_open(struct net_device *netdev)
spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
if (nesdev->nesadapter->phy_type[nesdev->mac_index] == NES_PHY_TYPE_SFP_D) {
- if (nesdev->link_recheck)
- cancel_delayed_work(&nesdev->work);
nesdev->link_recheck = 1;
- schedule_delayed_work(&nesdev->work, NES_LINK_RECHECK_DELAY);
+ mod_delayed_work(system_wq, &nesdev->work,
+ NES_LINK_RECHECK_DELAY);
}
spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);