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Message-Id: <1294062595-30097-9-git-send-email-tj@kernel.org>
Date: Mon, 3 Jan 2011 14:49:31 +0100
From: Tejun Heo <tj@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Tejun Heo <tj@...nel.org>, David Airlie <airlied@...ux.ie>,
dri-devel@...ts.freedesktop.org
Subject: [PATCH 08/32] drm/nouveau: use system_wq instead of dev_priv->wq
With cmwq, there's no reason for nouveau to use a dedicated workqueue.
Drop dev_priv->wq and use system_wq instead.
Because nouveau_irq_uninstall() may be called from unsleepable
context, the work items can't be flushed from there. Instead, init
and flush from nouveau_load/unload().
Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: David Airlie <airlied@...ux.ie>
Cc: dri-devel@...ts.freedesktop.org
---
Only compile tested. Please feel free to take it into the subsystem
tree or simply ack - I'll route it through the wq tree.
Thanks.
drivers/gpu/drm/nouveau/nouveau_drv.h | 1 -
drivers/gpu/drm/nouveau/nouveau_irq.c | 9 ---------
drivers/gpu/drm/nouveau/nouveau_state.c | 19 ++++++++++---------
drivers/gpu/drm/nouveau/nv50_display.c | 4 ++--
4 files changed, 12 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 1c7db64..2ecf875 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -580,7 +580,6 @@ struct drm_nouveau_private {
struct nouveau_bo *vga_ram;
- struct workqueue_struct *wq;
struct work_struct irq_work;
struct work_struct hpd_work;
diff --git a/drivers/gpu/drm/nouveau/nouveau_irq.c b/drivers/gpu/drm/nouveau/nouveau_irq.c
index 7bfd9e6..7d05a06 100644
--- a/drivers/gpu/drm/nouveau/nouveau_irq.c
+++ b/drivers/gpu/drm/nouveau/nouveau_irq.c
@@ -52,17 +52,8 @@ static int nouveau_ratelimit(void)
void
nouveau_irq_preinstall(struct drm_device *dev)
{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
-
/* Master disable */
nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
-
- if (dev_priv->card_type >= NV_50) {
- INIT_WORK(&dev_priv->irq_work, nv50_display_irq_handler_bh);
- INIT_WORK(&dev_priv->hpd_work, nv50_display_irq_hotplug_bh);
- spin_lock_init(&dev_priv->hpd_state.lock);
- INIT_LIST_HEAD(&dev_priv->vbl_waiting);
- }
}
int
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 049f755..2eea6ea 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -839,17 +839,17 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
dev->dev_private = dev_priv;
dev_priv->dev = dev;
+ /* the followings are used only by >= NV_50 */
+ INIT_WORK(&dev_priv->irq_work, nv50_display_irq_handler_bh);
+ INIT_WORK(&dev_priv->hpd_work, nv50_display_irq_hotplug_bh);
+ spin_lock_init(&dev_priv->hpd_state.lock);
+ INIT_LIST_HEAD(&dev_priv->vbl_waiting);
+
dev_priv->flags = flags & NOUVEAU_FLAGS;
NV_DEBUG(dev, "vendor: 0x%X device: 0x%X class: 0x%X\n",
dev->pci_vendor, dev->pci_device, dev->pdev->class);
- dev_priv->wq = create_workqueue("nouveau");
- if (!dev_priv->wq) {
- ret = -EINVAL;
- goto err_priv;
- }
-
/* resource 0 is mmio regs */
/* resource 1 is linear FB */
/* resource 2 is RAMIN (mmio regs + 0x1000000) */
@@ -862,7 +862,7 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
NV_ERROR(dev, "Unable to initialize the mmio mapping. "
"Please report your setup to " DRIVER_EMAIL "\n");
ret = -EINVAL;
- goto err_wq;
+ goto err_priv;
}
NV_DEBUG(dev, "regs mapped ok at 0x%llx\n",
(unsigned long long)mmio_start_offs);
@@ -969,8 +969,6 @@ err_ramin:
iounmap(dev_priv->ramin);
err_mmio:
iounmap(dev_priv->mmio);
-err_wq:
- destroy_workqueue(dev_priv->wq);
err_priv:
kfree(dev_priv);
dev->dev_private = NULL;
@@ -992,6 +990,9 @@ int nouveau_unload(struct drm_device *dev)
engine->display.destroy(dev);
nouveau_card_takedown(dev);
+ flush_work_sync(&dev_priv->irq_work);
+ flush_work_sync(&dev_priv->hpd_work);
+
iounmap(dev_priv->mmio);
iounmap(dev_priv->ramin);
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index f624c61..3d569da 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1110,7 +1110,7 @@ nv50_display_irq_handler(struct drm_device *dev)
dev_priv->hpd_state.hpd1_bits |= hpd1_bits;
spin_unlock(&dev_priv->hpd_state.lock);
- queue_work(dev_priv->wq, &dev_priv->hpd_work);
+ schedule_work(&dev_priv->hpd_work);
}
while (nv_rd32(dev, NV50_PMC_INTR_0) & NV50_PMC_INTR_0_DISPLAY) {
@@ -1139,7 +1139,7 @@ nv50_display_irq_handler(struct drm_device *dev)
if (clock) {
nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
if (!work_pending(&dev_priv->irq_work))
- queue_work(dev_priv->wq, &dev_priv->irq_work);
+ schedule_work(&dev_priv->irq_work);
delayed |= clock;
intr1 &= ~clock;
}
--
1.7.1
--
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