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drm/nouveau: store a per-client channel list

Browse source 
Removes the need to disable IRQs to lookup channel struct on every pushbuf
ioctl, among others.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-06-01 19:18:48 +10:00
parent f8656f0baa
commit e8a863c10f
6 changed files with 32 additions and 26 deletions
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42
drivers/gpu/drm/nouveau/nouveau_channel.c
View file

@ -121,6 +121,7 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
struct nouveau_channel *chan;
unsigned long flags;
int ret;
@ -220,6 +221,11 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
nouveau_debugfs_channel_init(chan);
NV_DEBUG(dev, "channel %d initialised\n", chan->id);
if (fpriv) {
spin_lock(&fpriv->lock);
list_add(&chan->list, &fpriv->channels);
spin_unlock(&fpriv->lock);
}
*chan_ret = chan;
return 0;
}
@ -236,29 +242,23 @@ nouveau_channel_get_unlocked(struct nouveau_channel *ref)
}
struct nouveau_channel *
nouveau_channel_get(struct drm_device *dev, struct drm_file *file_priv, int id)
nouveau_channel_get(struct drm_file *file_priv, int id)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
struct nouveau_channel *chan;
unsigned long flags;
if (unlikely(id < 0 || id >= NOUVEAU_MAX_CHANNEL_NR))
return ERR_PTR(-EINVAL);
spin_lock_irqsave(&dev_priv->channels.lock, flags);
chan = nouveau_channel_get_unlocked(dev_priv->channels.ptr[id]);
spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
if (unlikely(!chan))
return ERR_PTR(-EINVAL);
if (unlikely(file_priv && chan->file_priv != file_priv)) {
nouveau_channel_put_unlocked(&chan);
return ERR_PTR(-EINVAL);
spin_lock(&fpriv->lock);
list_for_each_entry(chan, &fpriv->channels, list) {
if (chan->id == id) {
chan = nouveau_channel_get_unlocked(chan);
spin_unlock(&fpriv->lock);
mutex_lock(&chan->mutex);
return chan;
}
}
spin_unlock(&fpriv->lock);
mutex_lock(&chan->mutex);
return chan;
return ERR_PTR(-EINVAL);
}
void
@ -383,10 +383,11 @@ nouveau_channel_cleanup(struct drm_device *dev, struct drm_file *file_priv)
NV_DEBUG(dev, "clearing FIFO enables from file_priv\n");
for (i = 0; i < engine->fifo.channels; i++) {
chan = nouveau_channel_get(dev, file_priv, i);
chan = nouveau_channel_get(file_priv, i);
if (IS_ERR(chan))
continue;
list_del(&chan->list);
atomic_dec(&chan->users);
nouveau_channel_put(&chan);
}
@ -459,10 +460,11 @@ nouveau_ioctl_fifo_free(struct drm_device *dev, void *data,
struct drm_nouveau_channel_free *req = data;
struct nouveau_channel *chan;
chan = nouveau_channel_get(dev, file_priv, req->channel);
chan = nouveau_channel_get(file_priv, req->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);
list_del(&chan->list);
atomic_dec(&chan->users);
nouveau_channel_put(&chan);
return 0;

4
drivers/gpu/drm/nouveau/nouveau_drv.h
View file

@ -47,6 +47,7 @@
struct nouveau_fpriv {
spinlock_t lock;
struct list_head channels;
};
static inline struct nouveau_fpriv *
@ -208,6 +209,7 @@ enum nouveau_channel_mutex_class {
struct nouveau_channel {
struct drm_device *dev;
struct list_head list;
int id;
/* references to the channel data structure */
@ -858,7 +860,7 @@ extern int nouveau_channel_alloc(struct drm_device *dev,
extern struct nouveau_channel *
nouveau_channel_get_unlocked(struct nouveau_channel *);
extern struct nouveau_channel *
nouveau_channel_get(struct drm_device *, struct drm_file *, int id);
nouveau_channel_get(struct drm_file *, int id);
extern void nouveau_channel_put_unlocked(struct nouveau_channel **);
extern void nouveau_channel_put(struct nouveau_channel **);
extern void nouveau_channel_ref(struct nouveau_channel *chan,

4
drivers/gpu/drm/nouveau/nouveau_gem.c
View file

@ -139,7 +139,7 @@ nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
}
if (req->channel_hint) {
chan = nouveau_channel_get(dev, file_priv, req->channel_hint);
chan = nouveau_channel_get(file_priv, req->channel_hint);
if (IS_ERR(chan))
return PTR_ERR(chan);
}
@ -548,7 +548,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
struct nouveau_fence *fence = NULL;
int i, j, ret = 0, do_reloc = 0;
chan = nouveau_channel_get(dev, file_priv, req->channel);
chan = nouveau_channel_get(file_priv, req->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);

2
drivers/gpu/drm/nouveau/nouveau_notifier.c
View file

@ -183,7 +183,7 @@ nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
if (unlikely(dev_priv->card_type >= NV_C0))
return -EINVAL;
chan = nouveau_channel_get(dev, file_priv, na->channel);
chan = nouveau_channel_get(file_priv, na->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);

4
drivers/gpu/drm/nouveau/nouveau_object.c
View file

@ -909,7 +909,7 @@ int nouveau_ioctl_grobj_alloc(struct drm_device *dev, void *data,
if (init->handle == ~0)
return -EINVAL;
chan = nouveau_channel_get(dev, file_priv, init->channel);
chan = nouveau_channel_get(file_priv, init->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);
@ -936,7 +936,7 @@ int nouveau_ioctl_gpuobj_free(struct drm_device *dev, void *data,
struct nouveau_channel *chan;
int ret;
chan = nouveau_channel_get(dev, file_priv, objfree->channel);
chan = nouveau_channel_get(file_priv, objfree->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);

2
drivers/gpu/drm/nouveau/nouveau_state.c
View file

@ -774,6 +774,8 @@ nouveau_open(struct drm_device *dev, struct drm_file *file_priv)
return -ENOMEM;
spin_lock_init(&fpriv->lock);
INIT_LIST_HEAD(&fpriv->channels);
file_priv->driver_priv = fpriv;
return 0;
}