diff options
| author |   Davidlohr Bueso <dave@stgolabs.net> | 2022-04-11 08:16:16 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-12 15:53:50 +0200 |
| commit | cbe0f674a2d63e88d9c2de2aab02d6da68b109f2 (patch) | |
| tree | 734c747680ffb1a2ce53145194b30ab73c64fbf5 | |
| parent | staging/most, dim2: convert dim2_tasklet to threaded irq (diff) | |
| download | linux-dev-cbe0f674a2d63e88d9c2de2aab02d6da68b109f2.tar.xz linux-dev-cbe0f674a2d63e88d9c2de2aab02d6da68b109f2.zip | |
staging/wlan-ng, prism2usb: replace reaper_bh tasklet with work
Tasklets have long been deprecated as being too heavy on the system
by running in irq context - and this is not a performance critical
path. If a higher priority process wants to run, it must wait for
the tasklet to finish before doing so.
The reaper_bh tasklet will now run in process context and have further
concurrency (tasklets being serialized among themselves), but this
is done holding the ctlxq.lock, so it should be fine.
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://lore.kernel.org/r/20220411151620.129178-3-dave@stgolabs.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/wlan-ng/hfa384x.h | 2 | ||||
| -rw-r--r-- | drivers/staging/wlan-ng/hfa384x_usb.c | 14 | ||||
| -rw-r--r-- | drivers/staging/wlan-ng/prism2usb.c | 2 |
3 files changed, 9 insertions, 9 deletions
diff --git a/drivers/staging/wlan-ng/hfa384x.h b/drivers/staging/wlan-ng/hfa384x.h index 98c154a8d8c1..7480d808e946 100644 --- a/drivers/staging/wlan-ng/hfa384x.h +++ b/drivers/staging/wlan-ng/hfa384x.h @@ -1227,7 +1227,7 @@ struct hfa384x { struct timer_list throttle; - struct tasklet_struct reaper_bh; + struct work_struct reaper_bh; struct tasklet_struct completion_bh; struct work_struct usb_work; diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c index 938e11a1a0b6..4000c321cb3a 100644 --- a/drivers/staging/wlan-ng/hfa384x_usb.c +++ b/drivers/staging/wlan-ng/hfa384x_usb.c @@ -193,7 +193,7 @@ static void hfa384x_usb_throttlefn(struct timer_list *t); static void hfa384x_usbctlx_completion_task(struct tasklet_struct *t); -static void hfa384x_usbctlx_reaper_task(struct tasklet_struct *t); +static void hfa384x_usbctlx_reaper_task(struct work_struct *work); static int hfa384x_usbctlx_submit(struct hfa384x *hw, struct hfa384x_usbctlx *ctlx); @@ -539,7 +539,7 @@ void hfa384x_create(struct hfa384x *hw, struct usb_device *usb) /* Initialize the authentication queue */ skb_queue_head_init(&hw->authq); - tasklet_setup(&hw->reaper_bh, hfa384x_usbctlx_reaper_task); + INIT_WORK(&hw->reaper_bh, hfa384x_usbctlx_reaper_task); tasklet_setup(&hw->completion_bh, hfa384x_usbctlx_completion_task); INIT_WORK(&hw->link_bh, prism2sta_processing_defer); INIT_WORK(&hw->usb_work, hfa384x_usb_defer); @@ -2585,7 +2585,7 @@ void hfa384x_tx_timeout(struct wlandevice *wlandev) /*---------------------------------------------------------------- * hfa384x_usbctlx_reaper_task * - * Tasklet to delete dead CTLX objects + * Deferred work to delete dead CTLX objects * * Arguments: * data ptr to a struct hfa384x @@ -2593,12 +2593,12 @@ void hfa384x_tx_timeout(struct wlandevice *wlandev) * Returns: * * Call context: - * Interrupt + * Task *---------------------------------------------------------------- */ -static void hfa384x_usbctlx_reaper_task(struct tasklet_struct *t) +static void hfa384x_usbctlx_reaper_task(struct work_struct *work) { - struct hfa384x *hw = from_tasklet(hw, t, reaper_bh); + struct hfa384x *hw = container_of(work, struct hfa384x, reaper_bh); struct hfa384x_usbctlx *ctlx, *temp; unsigned long flags; @@ -2686,7 +2686,7 @@ static void hfa384x_usbctlx_completion_task(struct tasklet_struct *t) spin_unlock_irqrestore(&hw->ctlxq.lock, flags); if (reap) - tasklet_schedule(&hw->reaper_bh); + schedule_work(&hw->reaper_bh); } /*---------------------------------------------------------------- diff --git a/drivers/staging/wlan-ng/prism2usb.c b/drivers/staging/wlan-ng/prism2usb.c index dc0749b8eff7..36340f36b0cb 100644 --- a/drivers/staging/wlan-ng/prism2usb.c +++ b/drivers/staging/wlan-ng/prism2usb.c @@ -182,7 +182,7 @@ static void prism2sta_disconnect_usb(struct usb_interface *interface) usb_kill_urb(&hw->ctlx_urb); tasklet_kill(&hw->completion_bh); - tasklet_kill(&hw->reaper_bh); + cancel_work_sync(&hw->reaper_bh); cancel_work_sync(&hw->link_bh); cancel_work_sync(&hw->commsqual_bh); |