77c76183d6
As usual these patches were extracted from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 48966
93 lines
2.5 KiB
Diff
93 lines
2.5 KiB
Diff
From eafd7a031a15fb0d51a86b89e42ccde4f23434b4 Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Mon, 19 Oct 2015 08:29:41 -0700
|
|
Subject: [PATCH 094/170] drm/vc4: bo cache locking cleanup.
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_bo.c | 22 +++++++++-------------
|
|
1 file changed, 9 insertions(+), 13 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_bo.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
|
|
@@ -215,7 +215,6 @@ vc4_bo_cache_free_old(struct drm_device
|
|
struct vc4_dev *vc4 = to_vc4_dev(dev);
|
|
unsigned long expire_time = jiffies - msecs_to_jiffies(1000);
|
|
|
|
- mutex_lock(&vc4->bo_lock);
|
|
while (!list_empty(&vc4->bo_cache.time_list)) {
|
|
struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list,
|
|
struct vc4_bo, unref_head);
|
|
@@ -223,14 +222,12 @@ vc4_bo_cache_free_old(struct drm_device
|
|
mod_timer(&vc4->bo_cache.time_timer,
|
|
round_jiffies_up(jiffies +
|
|
msecs_to_jiffies(1000)));
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
return;
|
|
}
|
|
|
|
vc4_bo_remove_from_cache(bo);
|
|
vc4_bo_destroy(bo);
|
|
}
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
}
|
|
|
|
/* Called on the last userspace/kernel unreference of the BO. Returns
|
|
@@ -245,29 +242,24 @@ void vc4_free_object(struct drm_gem_obje
|
|
struct vc4_bo *bo = to_vc4_bo(gem_bo);
|
|
struct list_head *cache_list;
|
|
|
|
+ mutex_lock(&vc4->bo_lock);
|
|
/* If the object references someone else's memory, we can't cache it.
|
|
*/
|
|
if (gem_bo->import_attach) {
|
|
- mutex_lock(&vc4->bo_lock);
|
|
vc4_bo_destroy(bo);
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
- return;
|
|
+ goto out;
|
|
}
|
|
|
|
/* Don't cache if it was publicly named. */
|
|
if (gem_bo->name) {
|
|
- mutex_lock(&vc4->bo_lock);
|
|
vc4_bo_destroy(bo);
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
- return;
|
|
+ goto out;
|
|
}
|
|
|
|
- mutex_lock(&vc4->bo_lock);
|
|
cache_list = vc4_get_cache_list_for_size(dev, gem_bo->size);
|
|
if (!cache_list) {
|
|
vc4_bo_destroy(bo);
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
- return;
|
|
+ goto out;
|
|
}
|
|
|
|
if (bo->validated_shader) {
|
|
@@ -282,9 +274,11 @@ void vc4_free_object(struct drm_gem_obje
|
|
|
|
vc4->bo_stats.num_cached++;
|
|
vc4->bo_stats.size_cached += gem_bo->size;
|
|
- mutex_unlock(&vc4->bo_lock);
|
|
|
|
vc4_bo_cache_free_old(dev);
|
|
+
|
|
+out:
|
|
+ mutex_unlock(&vc4->bo_lock);
|
|
}
|
|
|
|
static void vc4_bo_cache_time_work(struct work_struct *work)
|
|
@@ -293,7 +287,9 @@ static void vc4_bo_cache_time_work(struc
|
|
container_of(work, struct vc4_dev, bo_cache.time_work);
|
|
struct drm_device *dev = vc4->dev;
|
|
|
|
+ mutex_lock(&vc4->bo_lock);
|
|
vc4_bo_cache_free_old(dev);
|
|
+ mutex_unlock(&vc4->bo_lock);
|
|
}
|
|
|
|
static void vc4_bo_cache_time_timer(unsigned long data)
|