AMD-GFX Archive on lore.kernel.org
 help / color / Atom feed
From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: linux-rdma@vger.kernel.org,
	"Daniel Vetter" <daniel.vetter@ffwll.ch>,
	intel-gfx@lists.freedesktop.org,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	amd-gfx@lists.freedesktop.org,
	"Chris Wilson" <chris@chris-wilson.co.uk>,
	linaro-mm-sig@lists.linaro.org,
	"Daniel Vetter" <daniel.vetter@intel.com>,
	"Christian König" <christian.koenig@amd.com>,
	linux-media@vger.kernel.org
Subject: [PATCH 03/11] drm/vblank: Annotate with dma-fence signalling section
Date: Thu, 21 Jan 2021 16:29:51 +0100
Message-ID: <20210121152959.1725404-4-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20210121152959.1725404-1-daniel.vetter@ffwll.ch>

This is rather overkill since currently all drivers call this from
hardirq (or at least timers). But maybe in the future we're going to
have thread irq handlers and what not, doesn't hurt to be prepared.
Plus this is an easy start for sprinkling these fence annotations into
shared code.

Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-rdma@vger.kernel.org
Cc: amd-gfx@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 drivers/gpu/drm/drm_vblank.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index 30912d8f82a5..f2aeb9bf325f 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -24,6 +24,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/dma-fence.h>
 #include <linux/export.h>
 #include <linux/kthread.h>
 #include <linux/moduleparam.h>
@@ -1922,7 +1923,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 	unsigned long irqflags;
-	bool disable_irq;
+	bool disable_irq, fence_cookie;
 
 	if (drm_WARN_ON_ONCE(dev, !drm_dev_has_vblank(dev)))
 		return false;
@@ -1930,6 +1931,8 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 	if (drm_WARN_ON(dev, pipe >= dev->num_crtcs))
 		return false;
 
+	fence_cookie = dma_fence_begin_signalling();
+
 	spin_lock_irqsave(&dev->event_lock, irqflags);
 
 	/* Need timestamp lock to prevent concurrent execution with
@@ -1942,6 +1945,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 	if (!vblank->enabled) {
 		spin_unlock(&dev->vblank_time_lock);
 		spin_unlock_irqrestore(&dev->event_lock, irqflags);
+		dma_fence_end_signalling(fence_cookie);
 		return false;
 	}
 
@@ -1968,6 +1972,8 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 	if (disable_irq)
 		vblank_disable_fn(&vblank->disable_timer);
 
+	dma_fence_end_signalling(fence_cookie);
+
 	return true;
 }
 EXPORT_SYMBOL(drm_handle_vblank);
-- 
2.30.0

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

      parent reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210121152959.1725404-1-daniel.vetter@ffwll.ch>
2021-01-21 15:29 ` [PATCH 01/11] drm/atomic-helper: Add dma-fence annotations Daniel Vetter
2021-01-21 15:29 ` [PATCH 02/11] drm/vkms: Annotate vblank timer Daniel Vetter
2021-01-21 15:29 ` Daniel Vetter [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210121152959.1725404-4-daniel.vetter@ffwll.ch \
    --to=daniel.vetter@ffwll.ch \
    --cc=amd-gfx@lists.freedesktop.org \
    --cc=chris@chris-wilson.co.uk \
    --cc=christian.koenig@amd.com \
    --cc=daniel.vetter@intel.com \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=linaro-mm-sig@lists.linaro.org \
    --cc=linux-media@vger.kernel.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=maarten.lankhorst@linux.intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

AMD-GFX Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/amd-gfx/0 amd-gfx/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 amd-gfx amd-gfx/ https://lore.kernel.org/amd-gfx \
		amd-gfx@lists.freedesktop.org
	public-inbox-index amd-gfx

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.freedesktop.lists.amd-gfx


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git