a8d4d71c41
As usual these patches were extracted from the raspberry pi repo: https://github.com/raspberrypi/linux/commits/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
92 lines
2.5 KiB
Diff
92 lines
2.5 KiB
Diff
From 6473779beaeda1017d8487c3f510015f2b9b8f9d Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Mon, 19 Oct 2015 08:29:41 -0700
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Subject: [PATCH 093/232] drm/vc4: bo cache locking cleanup.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/gpu/drm/vc4/vc4_bo.c | 22 +++++++++-------------
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1 file changed, 9 insertions(+), 13 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_bo.c
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+++ b/drivers/gpu/drm/vc4/vc4_bo.c
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@@ -215,7 +215,6 @@ vc4_bo_cache_free_old(struct drm_device
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struct vc4_dev *vc4 = to_vc4_dev(dev);
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unsigned long expire_time = jiffies - msecs_to_jiffies(1000);
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- mutex_lock(&vc4->bo_lock);
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while (!list_empty(&vc4->bo_cache.time_list)) {
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struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list,
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struct vc4_bo, unref_head);
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@@ -223,14 +222,12 @@ vc4_bo_cache_free_old(struct drm_device
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mod_timer(&vc4->bo_cache.time_timer,
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round_jiffies_up(jiffies +
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msecs_to_jiffies(1000)));
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- mutex_unlock(&vc4->bo_lock);
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return;
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}
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vc4_bo_remove_from_cache(bo);
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vc4_bo_destroy(bo);
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}
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- mutex_unlock(&vc4->bo_lock);
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}
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/* Called on the last userspace/kernel unreference of the BO. Returns
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@@ -245,29 +242,24 @@ void vc4_free_object(struct drm_gem_obje
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struct vc4_bo *bo = to_vc4_bo(gem_bo);
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struct list_head *cache_list;
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+ mutex_lock(&vc4->bo_lock);
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/* If the object references someone else's memory, we can't cache it.
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*/
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if (gem_bo->import_attach) {
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- mutex_lock(&vc4->bo_lock);
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vc4_bo_destroy(bo);
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- mutex_unlock(&vc4->bo_lock);
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- return;
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+ goto out;
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}
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/* Don't cache if it was publicly named. */
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if (gem_bo->name) {
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- mutex_lock(&vc4->bo_lock);
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vc4_bo_destroy(bo);
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- mutex_unlock(&vc4->bo_lock);
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- return;
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+ goto out;
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}
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- mutex_lock(&vc4->bo_lock);
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cache_list = vc4_get_cache_list_for_size(dev, gem_bo->size);
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if (!cache_list) {
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vc4_bo_destroy(bo);
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- mutex_unlock(&vc4->bo_lock);
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- return;
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+ goto out;
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}
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if (bo->validated_shader) {
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@@ -282,9 +274,11 @@ void vc4_free_object(struct drm_gem_obje
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vc4->bo_stats.num_cached++;
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vc4->bo_stats.size_cached += gem_bo->size;
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- mutex_unlock(&vc4->bo_lock);
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vc4_bo_cache_free_old(dev);
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+
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+out:
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+ mutex_unlock(&vc4->bo_lock);
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}
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static void vc4_bo_cache_time_work(struct work_struct *work)
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@@ -293,7 +287,9 @@ static void vc4_bo_cache_time_work(struc
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container_of(work, struct vc4_dev, bo_cache.time_work);
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struct drm_device *dev = vc4->dev;
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+ mutex_lock(&vc4->bo_lock);
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vc4_bo_cache_free_old(dev);
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+ mutex_unlock(&vc4->bo_lock);
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}
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static void vc4_bo_cache_time_timer(unsigned long data)
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