From: Gerd Hoffmann <kraxel@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@linux.ie>,
open list <linux-kernel@vger.kernel.org>,
"open list:DRM DRIVER FOR QXL VIRTUAL GPU"
<virtualization@lists.linux-foundation.org>,
Gerd Hoffmann <kraxel@redhat.com>,
"open list:DRM DRIVER FOR QXL VIRTUAL GPU"
<spice-devel@lists.freedesktop.org>,
Dave Airlie <airlied@redhat.com>
Subject: [PATCH v6 08/10] drm/qxl: properly free qxl releases
Date: Thu, 4 Feb 2021 15:57:09 +0100 [thread overview]
Message-ID: <20210204145712.1531203-9-kraxel@redhat.com> (raw)
In-Reply-To: <20210204145712.1531203-1-kraxel@redhat.com>
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 <kraxel@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
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 | 28 ++++++++++++++++++++++++----
drivers/gpu/drm/qxl/qxl_release.c | 2 ++
5 files changed, 30 insertions(+), 4 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..66d74aaaee06 100644
--- a/drivers/gpu/drm/qxl/qxl_kms.c
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -286,11 +286,31 @@ 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]);
- qxl_gem_fini(qdev);
- qxl_bo_fini(qdev);
+ 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);
flush_work(&qdev->gc_work);
+ qxl_surf_evict(qdev);
+ qxl_vram_evict(qdev);
+
+ qxl_gem_fini(qdev);
+ qxl_bo_fini(qdev);
qxl_ring_free(qdev->command_ring);
qxl_ring_free(qdev->cursor_ring);
qxl_ring_free(qdev->release_ring);
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
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next prev parent reply other threads:[~2021-02-04 14:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-04 14:57 [PATCH v6 00/10] drm/qxl: fix driver shutdown issues Gerd Hoffmann
2021-02-04 14:57 ` [PATCH v6 01/10] [hack] silence ttm fini WARNING Gerd Hoffmann
2021-02-04 14:58 ` Christian König
2021-02-05 7:39 ` Gerd Hoffmann
2021-02-04 14:57 ` [PATCH v6 02/10] Revert "drm/qxl: do not run release if qxl failed to init" Gerd Hoffmann
2021-02-04 18:34 ` Thomas Zimmermann
2021-02-04 18:52 ` Tong Zhang
2021-02-04 19:06 ` Thomas Zimmermann
2021-02-04 20:21 ` Tong Zhang
2021-02-04 14:57 ` [PATCH v6 03/10] drm/qxl: use drmm_mode_config_init Gerd Hoffmann
2021-02-04 14:57 ` [PATCH v6 04/10] drm/qxl: unpin release objects Gerd Hoffmann
2021-02-04 14:57 ` [PATCH v6 05/10] drm/qxl: release shadow on shutdown Gerd Hoffmann
2021-02-04 18:17 ` Thomas Zimmermann
2021-02-04 14:57 ` [PATCH v6 06/10] drm/qxl: properly pin/unpin shadow Gerd Hoffmann
2021-02-04 18:18 ` Thomas Zimmermann
2021-02-04 14:57 ` [PATCH v6 07/10] drm/qxl: handle shadow in primary destroy Gerd Hoffmann
2021-02-04 14:57 ` Gerd Hoffmann [this message]
2021-02-04 14:57 ` [PATCH v6 09/10] drm/qxl: simplify qxl_fence_wait Gerd Hoffmann
2021-02-04 14:57 ` [PATCH v6 10/10] drm/qxl: allocate dumb buffers in ram Gerd Hoffmann
2021-02-04 18:22 ` Thomas Zimmermann
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