diff options
| author | David Dawes <dawes@xfree86.org> | 2001-04-09 16:27:54 +0000 |
|---|---|---|
| committer | David Dawes <dawes@xfree86.org> | 2001-04-09 16:27:54 +0000 |
| commit | 1759c16ab9b64598968a0058039e8a66bf5f9773 (patch) | |
| tree | a82d44dc47302041daf1f5f408c6f47017baac47 /bsd/drm/lists.c | |
| parent | 0e7f6c0726e5ff08eeab8e17a5aa63fbe44b3410 (diff) | |
Import -f XFree86 4.0.99.2
Diffstat (limited to 'bsd/drm/lists.c')
| -rw-r--r-- | bsd/drm/lists.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/bsd/drm/lists.c b/bsd/drm/lists.c index 61becaa1..b9722973 100644 --- a/bsd/drm/lists.c +++ b/bsd/drm/lists.c @@ -121,6 +121,7 @@ int drm_freelist_create(drm_freelist_t *bl, int count) bl->low_mark = 0; bl->high_mark = 0; atomic_set(&bl->wfh, 0); +/* bl->lock = SPIN_LOCK_UNLOCKED; */ ++bl->initialized; return 0; } @@ -159,6 +160,7 @@ int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf) drm_histogram_compute(dev, buf); #endif buf->list = DRM_LIST_FREE; +/* do { old = (unsigned long)bl->next; buf->next = (void *)old; @@ -169,6 +171,13 @@ int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf) return 1; } } while (failed); +*/ + + simple_lock(&bl->lock); + buf->next = bl->next; + bl->next = buf; + simple_unlock(&bl->lock); + atomic_inc(&bl->count); if (atomic_read(&bl->count) > dma->buf_count) { DRM_ERROR("%d of %d buffers free after addition of %d\n", @@ -195,6 +204,7 @@ static drm_buf_t *drm_freelist_try(drm_freelist_t *bl) if (!bl) return NULL; /* Get buffer */ +/* do { old = (unsigned int)bl->next; if (!old) { @@ -210,6 +220,16 @@ static drm_buf_t *drm_freelist_try(drm_freelist_t *bl) atomic_dec(&bl->count); buf = (drm_buf_t *)old; +*/ + simple_lock(&bl->lock); + if(!bl->next){ + simple_unlock(&bl->lock); + return NULL; + } + buf = bl->next; + bl->next = bl->next->next; + simple_unlock(&bl->lock); + atomic_dec(&bl->count); buf->next = NULL; buf->list = DRM_LIST_NONE; DRM_DEBUG("%d, count = %d, wfh = %d, w%d, p%d\n", |