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drm/radeon: use system_wq instead of dev_priv->wq

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With cmwq, there's no reason for radeon to use a dedicated workqueue.
Drop dev_priv->wq and use system_wq instead.

Because radeon_driver_irq_uninstall_kms() may be called from
unsleepable context, the work items can't be flushed from there.
Instead, init and flush from radeon_irq_kms_init/fini().

While at it, simplify canceling/flushing of rdev->pm.dynpm_idle_work.
Always initialize and sync cancel instead of being unnecessarily smart
about it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Tejun Heo 2011-01-03 14:49:32 +01:00 committed by Dave Airlie
parent af5dd83b87
commit 32c87fca2f
8 changed files with 23 additions and 44 deletions
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2
drivers/gpu/drm/radeon/evergreen.c
View file

@ -2756,7 +2756,7 @@ restart_ih:
if (wptr != rdev->ih.wptr)
goto restart_ih;
if (queue_hotplug)
queue_work(rdev->wq, &rdev->hotplug_work);
schedule_work(&rdev->hotplug_work);
rdev->ih.rptr = rptr;
WREG32(IH_RB_RPTR, rdev->ih.rptr);
spin_unlock_irqrestore(&rdev->ih.lock, flags);

2
drivers/gpu/drm/radeon/r100.c
View file

@ -682,7 +682,7 @@ int r100_irq_process(struct radeon_device *rdev)
/* reset gui idle ack. the status bit is broken */
rdev->irq.gui_idle_acked = false;
if (queue_hotplug)
queue_work(rdev->wq, &rdev->hotplug_work);
schedule_work(&rdev->hotplug_work);
if (rdev->msi_enabled) {
switch (rdev->family) {
case CHIP_RS400:

2
drivers/gpu/drm/radeon/r600.c
View file

@ -3442,7 +3442,7 @@ restart_ih:
if (wptr != rdev->ih.wptr)
goto restart_ih;
if (queue_hotplug)
queue_work(rdev->wq, &rdev->hotplug_work);
schedule_work(&rdev->hotplug_work);
rdev->ih.rptr = rptr;
WREG32(IH_RB_RPTR, rdev->ih.rptr);
spin_unlock_irqrestore(&rdev->ih.lock, flags);

1
drivers/gpu/drm/radeon/radeon.h
View file

@ -1152,7 +1152,6 @@ struct radeon_device {
struct r700_vram_scratch vram_scratch;
int msi_enabled; /* msi enabled */
struct r600_ih ih; /* r6/700 interrupt ring */
struct workqueue_struct *wq;
struct work_struct hotplug_work;
int num_crtc; /* number of crtcs */
struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */

6
drivers/gpu/drm/radeon/radeon_device.c
View file

@ -710,11 +710,6 @@ int radeon_device_init(struct radeon_device *rdev,
init_waitqueue_head(&rdev->irq.vblank_queue);
init_waitqueue_head(&rdev->irq.idle_queue);
/* setup workqueue */
rdev->wq = create_workqueue("radeon");
if (rdev->wq == NULL)
return -ENOMEM;
/* Set asic functions */
r = radeon_asic_init(rdev);
if (r)
@ -813,7 +808,6 @@ void radeon_device_fini(struct radeon_device *rdev)
/* evict vram memory */
radeon_bo_evict_vram(rdev);
radeon_fini(rdev);
destroy_workqueue(rdev->wq);
vga_switcheroo_unregister_client(rdev->pdev);
vga_client_register(rdev->pdev, NULL, NULL, NULL);
if (rdev->rio_mem)

5
drivers/gpu/drm/radeon/radeon_irq_kms.c
View file

@ -64,8 +64,6 @@ void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
struct radeon_device *rdev = dev->dev_private;
unsigned i;
INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
/* Disable *all* interrupts */
rdev->irq.sw_int = false;
rdev->irq.gui_idle = false;
@ -114,6 +112,8 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
{
int r = 0;
INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
spin_lock_init(&rdev->irq.sw_lock);
r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
if (r) {
@ -152,6 +152,7 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
if (rdev->msi_enabled)
pci_disable_msi(rdev->pdev);
}
flush_work_sync(&rdev->hotplug_work);
}
void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)

47
drivers/gpu/drm/radeon/radeon_pm.c
View file

@ -405,20 +405,13 @@ static ssize_t radeon_set_pm_method(struct device *dev,
rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
mutex_unlock(&rdev->pm.mutex);
} else if (strncmp("profile", buf, strlen("profile")) == 0) {
bool flush_wq = false;
mutex_lock(&rdev->pm.mutex);
if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
flush_wq = true;
}
/* disable dynpm */
rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
rdev->pm.pm_method = PM_METHOD_PROFILE;
mutex_unlock(&rdev->pm.mutex);
if (flush_wq)
flush_workqueue(rdev->wq);
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
} else {
DRM_ERROR("invalid power method!\n");
goto fail;
@ -524,18 +517,14 @@ static void radeon_hwmon_fini(struct radeon_device *rdev)
void radeon_pm_suspend(struct radeon_device *rdev)
{
bool flush_wq = false;
mutex_lock(&rdev->pm.mutex);
if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
flush_wq = true;
}
mutex_unlock(&rdev->pm.mutex);
if (flush_wq)
flush_workqueue(rdev->wq);
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
}
void radeon_pm_resume(struct radeon_device *rdev)
@ -550,8 +539,8 @@ void radeon_pm_resume(struct radeon_device *rdev)
if (rdev->pm.pm_method == PM_METHOD_DYNPM
&& rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
queue_delayed_work(rdev->wq, &rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
}
mutex_unlock(&rdev->pm.mutex);
radeon_pm_compute_clocks(rdev);
@ -585,6 +574,9 @@ int radeon_pm_init(struct radeon_device *rdev)
ret = radeon_hwmon_init(rdev);
if (ret)
return ret;
INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
if (rdev->pm.num_power_states > 1) {
/* where's the best place to put these? */
ret = device_create_file(rdev->dev, &dev_attr_power_profile);
@ -598,8 +590,6 @@ int radeon_pm_init(struct radeon_device *rdev)
rdev->acpi_nb.notifier_call = radeon_acpi_event;
register_acpi_notifier(&rdev->acpi_nb);
#endif
INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
if (radeon_debugfs_pm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for PM!\n");
}
@ -613,25 +603,20 @@ int radeon_pm_init(struct radeon_device *rdev)
void radeon_pm_fini(struct radeon_device *rdev)
{
if (rdev->pm.num_power_states > 1) {
bool flush_wq = false;
mutex_lock(&rdev->pm.mutex);
if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
rdev->pm.profile = PM_PROFILE_DEFAULT;
radeon_pm_update_profile(rdev);
radeon_pm_set_clocks(rdev);
} else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
/* cancel work */
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
flush_wq = true;
/* reset default clocks */
rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
radeon_pm_set_clocks(rdev);
}
mutex_unlock(&rdev->pm.mutex);
if (flush_wq)
flush_workqueue(rdev->wq);
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
device_remove_file(rdev->dev, &dev_attr_power_profile);
device_remove_file(rdev->dev, &dev_attr_power_method);
@ -690,12 +675,12 @@ void radeon_pm_compute_clocks(struct radeon_device *rdev)
radeon_pm_get_dynpm_state(rdev);
radeon_pm_set_clocks(rdev);
queue_delayed_work(rdev->wq, &rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
} else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
queue_delayed_work(rdev->wq, &rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
}
} else { /* count == 0 */
@ -800,8 +785,8 @@ static void radeon_dynpm_idle_work_handler(struct work_struct *work)
radeon_pm_set_clocks(rdev);
}
queue_delayed_work(rdev->wq, &rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
}
mutex_unlock(&rdev->pm.mutex);
ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);

2
drivers/gpu/drm/radeon/rs600.c
View file

@ -692,7 +692,7 @@ int rs600_irq_process(struct radeon_device *rdev)
/* reset gui idle ack. the status bit is broken */
rdev->irq.gui_idle_acked = false;
if (queue_hotplug)
queue_work(rdev->wq, &rdev->hotplug_work);
schedule_work(&rdev->hotplug_work);
if (rdev->msi_enabled) {
switch (rdev->family) {
case CHIP_RS600: