drm/i915: Make the mutex_lock interruptible on ioctl paths
... and combine it with the wedged completion handler.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index a728309..ac5bff8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -91,6 +91,26 @@
return -EIO;
}
+static int i915_mutex_lock_interruptible(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int ret;
+
+ ret = i915_gem_check_is_wedged(dev);
+ if (ret)
+ return ret;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ if (atomic_read(&dev_priv->mm.wedged)) {
+ mutex_unlock(&dev->struct_mutex);
+ return -EAGAIN;
+ }
+
+ return 0;
+}
static inline bool
i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv)
@@ -299,7 +319,9 @@
user_data = (char __user *) (uintptr_t) args->data_ptr;
remain = args->size;
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ret;
ret = i915_gem_object_get_pages(obj, 0);
if (ret != 0)
@@ -418,7 +440,9 @@
do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj);
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ goto fail_put_user_pages;
ret = i915_gem_object_get_pages_or_evict(obj);
if (ret)
@@ -617,8 +641,10 @@
if (!access_ok(VERIFY_READ, user_data, remain))
return -EFAULT;
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ret;
- mutex_lock(&dev->struct_mutex);
ret = i915_gem_object_pin(obj, 0);
if (ret) {
mutex_unlock(&dev->struct_mutex);
@@ -713,7 +739,10 @@
goto out_unpin_pages;
}
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ goto out_unpin_pages;
+
ret = i915_gem_object_pin(obj, 0);
if (ret)
goto out_unlock;
@@ -787,7 +816,9 @@
user_data = (char __user *) (uintptr_t) args->data_ptr;
remain = args->size;
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ret;
ret = i915_gem_object_get_pages(obj, 0);
if (ret != 0)
@@ -883,7 +914,9 @@
do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj);
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ goto fail_put_user_pages;
ret = i915_gem_object_get_pages_or_evict(obj);
if (ret)
@@ -1051,7 +1084,11 @@
return -ENOENT;
obj_priv = to_intel_bo(obj);
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
+ }
intel_mark_busy(dev, obj);
@@ -1106,11 +1143,14 @@
if (!(dev->driver->driver_features & DRIVER_GEM))
return -ENODEV;
- mutex_lock(&dev->struct_mutex);
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
- if (obj == NULL) {
- mutex_unlock(&dev->struct_mutex);
+ if (obj == NULL)
return -ENOENT;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
}
#if WATCH_BUF
@@ -1425,7 +1465,11 @@
if (obj == NULL)
return -ENOENT;
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
+ }
obj_priv = to_intel_bo(obj);
@@ -3668,16 +3712,12 @@
if (ret != 0)
goto pre_mutex_err;
- mutex_lock(&dev->struct_mutex);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ goto pre_mutex_err;
i915_verify_inactive(dev, __FILE__, __LINE__);
- if (atomic_read(&dev_priv->mm.wedged)) {
- mutex_unlock(&dev->struct_mutex);
- ret = -EAGAIN;
- goto pre_mutex_err;
- }
-
if (dev_priv->mm.suspended) {
mutex_unlock(&dev->struct_mutex);
ret = -EBUSY;
@@ -4161,21 +4201,20 @@
struct drm_i915_gem_object *obj_priv;
int ret;
- ret = i915_gem_check_is_wedged(dev);
- if (ret)
- return ret;
-
- mutex_lock(&dev->struct_mutex);
-
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (obj == NULL) {
DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n",
args->handle);
- mutex_unlock(&dev->struct_mutex);
return -ENOENT;
}
obj_priv = to_intel_bo(obj);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
+ }
+
if (obj_priv->madv != I915_MADV_WILLNEED) {
DRM_ERROR("Attempting to pin a purgeable buffer\n");
drm_gem_object_unreference(obj);
@@ -4220,18 +4259,23 @@
struct drm_i915_gem_pin *args = data;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
-
- mutex_lock(&dev->struct_mutex);
+ int ret;
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (obj == NULL) {
DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n",
args->handle);
- mutex_unlock(&dev->struct_mutex);
return -ENOENT;
}
obj_priv = to_intel_bo(obj);
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
+ }
+
if (obj_priv->pin_filp != file_priv) {
DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n",
args->handle);
@@ -4254,16 +4298,11 @@
i915_gem_busy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_busy *args = data;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
int ret;
- ret = i915_gem_check_is_wedged(dev);
- if (ret)
- return ret;
-
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (obj == NULL) {
DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n",
@@ -4271,11 +4310,10 @@
return -ENOENT;
}
- mutex_lock(&dev->struct_mutex);
-
- if (atomic_read(&dev_priv->mm.wedged)) {
- ret = -EAGAIN;
- goto unlock;
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
}
/* Count all active objects as busy, even if they are currently not used
@@ -4306,10 +4344,9 @@
args->busy = obj_priv->active;
}
-unlock:
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
- return ret;
+ return 0;
}
int
@@ -4326,6 +4363,7 @@
struct drm_i915_gem_madvise *args = data;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
+ int ret;
switch (args->madv) {
case I915_MADV_DONTNEED:
@@ -4341,10 +4379,14 @@
args->handle);
return -ENOENT;
}
-
- mutex_lock(&dev->struct_mutex);
obj_priv = to_intel_bo(obj);
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ret;
+ }
+
if (obj_priv->pin_count) {
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);