Reorganize qxl_device_fini() a bit.
Add missing unpin() calls.
Count releases. Add wait queue for releases. That way
qxl_device_fini() can easily wait until everything is
ready for proper shutdown.
Signed-off-by: Gerd Hoffmann <[email protected]>
---
drivers/gpu/drm/qxl/qxl_drv.h | 2 ++
drivers/gpu/drm/qxl/qxl_cmd.c | 1 +
drivers/gpu/drm/qxl/qxl_irq.c | 1 +
drivers/gpu/drm/qxl/qxl_kms.c | 22 ++++++++++++++++++++--
drivers/gpu/drm/qxl/qxl_release.c | 2 ++
5 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 01354b43c413..6dd57cfb2e7c 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -214,6 +214,8 @@ struct qxl_device {
spinlock_t release_lock;
struct idr release_idr;
uint32_t release_seqno;
+ atomic_t release_count;
+ wait_queue_head_t release_event;
spinlock_t release_idr_lock;
struct mutex async_io_mutex;
unsigned int last_sent_io_cmd;
diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index 54e3c3a97440..7e22a81bfb36 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
@@ -254,6 +254,7 @@ int qxl_garbage_collect(struct qxl_device *qdev)
}
}
+ wake_up_all(&qdev->release_event);
DRM_DEBUG_DRIVER("%d\n", i);
return i;
diff --git a/drivers/gpu/drm/qxl/qxl_irq.c b/drivers/gpu/drm/qxl/qxl_irq.c
index ddf6588a2a38..d312322cacd1 100644
--- a/drivers/gpu/drm/qxl/qxl_irq.c
+++ b/drivers/gpu/drm/qxl/qxl_irq.c
@@ -87,6 +87,7 @@ int qxl_irq_init(struct qxl_device *qdev)
init_waitqueue_head(&qdev->display_event);
init_waitqueue_head(&qdev->cursor_event);
init_waitqueue_head(&qdev->io_cmd_event);
+ init_waitqueue_head(&qdev->release_event);
INIT_WORK(&qdev->client_monitors_config_work,
qxl_client_monitors_config_work_func);
atomic_set(&qdev->irq_received, 0);
diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
index 4a60a52ab62e..616aea948863 100644
--- a/drivers/gpu/drm/qxl/qxl_kms.c
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -286,8 +286,26 @@ int qxl_device_init(struct qxl_device *qdev,
void qxl_device_fini(struct qxl_device *qdev)
{
- qxl_bo_unref(&qdev->current_release_bo[0]);
- qxl_bo_unref(&qdev->current_release_bo[1]);
+ int cur_idx;
+
+ for (cur_idx = 0; cur_idx < 3; cur_idx++) {
+ if (!qdev->current_release_bo[cur_idx])
+ continue;
+ qxl_bo_unpin(qdev->current_release_bo[cur_idx]);
+ qxl_bo_unref(&qdev->current_release_bo[cur_idx]);
+ qdev->current_release_bo_offset[cur_idx] = 0;
+ qdev->current_release_bo[cur_idx] = NULL;
+ }
+
+ /*
+ * Ask host to release resources (+fill release ring),
+ * then wait for the release actually happening.
+ */
+ qxl_io_notify_oom(qdev);
+ wait_event_timeout(qdev->release_event,
+ atomic_read(&qdev->release_count) == 0,
+ HZ);
+
qxl_gem_fini(qdev);
qxl_bo_fini(qdev);
flush_work(&qdev->gc_work);
diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
index 28013fd1f8ea..43a5436853b7 100644
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -196,6 +196,7 @@ qxl_release_free(struct qxl_device *qdev,
qxl_release_free_list(release);
kfree(release);
}
+ atomic_dec(&qdev->release_count);
}
static int qxl_release_bo_alloc(struct qxl_device *qdev,
@@ -344,6 +345,7 @@ int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
*rbo = NULL;
return idr_ret;
}
+ atomic_inc(&qdev->release_count);
mutex_lock(&qdev->release_mutex);
if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) {
--
2.29.2
Am 03.02.21 um 14:16 schrieb Gerd Hoffmann:
> Reorganize qxl_device_fini() a bit.
> Add missing unpin() calls.
>
> Count releases. Add wait queue for releases. That way
> qxl_device_fini() can easily wait until everything is
> ready for proper shutdown.
>
> Signed-off-by: Gerd Hoffmann <[email protected]>
Acked-by: Thomas Zimmermann <[email protected]>
> ---
> drivers/gpu/drm/qxl/qxl_drv.h | 2 ++
> drivers/gpu/drm/qxl/qxl_cmd.c | 1 +
> drivers/gpu/drm/qxl/qxl_irq.c | 1 +
> drivers/gpu/drm/qxl/qxl_kms.c | 22 ++++++++++++++++++++--
> drivers/gpu/drm/qxl/qxl_release.c | 2 ++
> 5 files changed, 26 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
> index 01354b43c413..6dd57cfb2e7c 100644
> --- a/drivers/gpu/drm/qxl/qxl_drv.h
> +++ b/drivers/gpu/drm/qxl/qxl_drv.h
> @@ -214,6 +214,8 @@ struct qxl_device {
> spinlock_t release_lock;
> struct idr release_idr;
> uint32_t release_seqno;
> + atomic_t release_count;
> + wait_queue_head_t release_event;
> spinlock_t release_idr_lock;
> struct mutex async_io_mutex;
> unsigned int last_sent_io_cmd;
> diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
> index 54e3c3a97440..7e22a81bfb36 100644
> --- a/drivers/gpu/drm/qxl/qxl_cmd.c
> +++ b/drivers/gpu/drm/qxl/qxl_cmd.c
> @@ -254,6 +254,7 @@ int qxl_garbage_collect(struct qxl_device *qdev)
> }
> }
>
> + wake_up_all(&qdev->release_event);
> DRM_DEBUG_DRIVER("%d\n", i);
>
> return i;
> diff --git a/drivers/gpu/drm/qxl/qxl_irq.c b/drivers/gpu/drm/qxl/qxl_irq.c
> index ddf6588a2a38..d312322cacd1 100644
> --- a/drivers/gpu/drm/qxl/qxl_irq.c
> +++ b/drivers/gpu/drm/qxl/qxl_irq.c
> @@ -87,6 +87,7 @@ int qxl_irq_init(struct qxl_device *qdev)
> init_waitqueue_head(&qdev->display_event);
> init_waitqueue_head(&qdev->cursor_event);
> init_waitqueue_head(&qdev->io_cmd_event);
> + init_waitqueue_head(&qdev->release_event);
> INIT_WORK(&qdev->client_monitors_config_work,
> qxl_client_monitors_config_work_func);
> atomic_set(&qdev->irq_received, 0);
> diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
> index 4a60a52ab62e..616aea948863 100644
> --- a/drivers/gpu/drm/qxl/qxl_kms.c
> +++ b/drivers/gpu/drm/qxl/qxl_kms.c
> @@ -286,8 +286,26 @@ int qxl_device_init(struct qxl_device *qdev,
>
> void qxl_device_fini(struct qxl_device *qdev)
> {
> - qxl_bo_unref(&qdev->current_release_bo[0]);
> - qxl_bo_unref(&qdev->current_release_bo[1]);
> + int cur_idx;
> +
> + for (cur_idx = 0; cur_idx < 3; cur_idx++) {
> + if (!qdev->current_release_bo[cur_idx])
> + continue;
> + qxl_bo_unpin(qdev->current_release_bo[cur_idx]);
> + qxl_bo_unref(&qdev->current_release_bo[cur_idx]);
> + qdev->current_release_bo_offset[cur_idx] = 0;
> + qdev->current_release_bo[cur_idx] = NULL;
> + }
> +
> + /*
> + * Ask host to release resources (+fill release ring),
> + * then wait for the release actually happening.
> + */
> + qxl_io_notify_oom(qdev);
> + wait_event_timeout(qdev->release_event,
> + atomic_read(&qdev->release_count) == 0,
> + HZ);
> +
> qxl_gem_fini(qdev);
> qxl_bo_fini(qdev);
> flush_work(&qdev->gc_work);
> diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
> index 28013fd1f8ea..43a5436853b7 100644
> --- a/drivers/gpu/drm/qxl/qxl_release.c
> +++ b/drivers/gpu/drm/qxl/qxl_release.c
> @@ -196,6 +196,7 @@ qxl_release_free(struct qxl_device *qdev,
> qxl_release_free_list(release);
> kfree(release);
> }
> + atomic_dec(&qdev->release_count);
> }
>
> static int qxl_release_bo_alloc(struct qxl_device *qdev,
> @@ -344,6 +345,7 @@ int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
> *rbo = NULL;
> return idr_ret;
> }
> + atomic_inc(&qdev->release_count);
>
> mutex_lock(&qdev->release_mutex);
> if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) {
>
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer