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author | Christian König <christian.koenig@amd.com> | 2021-06-15 15:34:11 +0200 |
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committer | Christian König <christian.koenig@amd.com> | 2021-10-06 09:49:18 +0200 |
commit | 7fa828cb926532a90de23763bc143523d2ff209c (patch) | |
tree | 2743395fa6739fc5e632a9c893b09d3344ec0185 /drivers/dma-buf/dma-resv.c | |
parent | ada5c48b11a3df814701daa9cd11305a75a5f1a5 (diff) | |
download | linux-7fa828cb926532a90de23763bc143523d2ff209c.tar.gz linux-7fa828cb926532a90de23763bc143523d2ff209c.tar.bz2 linux-7fa828cb926532a90de23763bc143523d2ff209c.zip |
dma-buf: use new iterator in dma_resv_test_signaled
This makes the function much simpler since the complex
retry logic is now handled elsewhere.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211005113742.1101-8-christian.koenig@amd.com
Diffstat (limited to 'drivers/dma-buf/dma-resv.c')
-rw-r--r-- | drivers/dma-buf/dma-resv.c | 57 |
1 files changed, 7 insertions, 50 deletions
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c index 61efa557dcf3..a480af9581bd 100644 --- a/drivers/dma-buf/dma-resv.c +++ b/drivers/dma-buf/dma-resv.c @@ -584,22 +584,6 @@ long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr, EXPORT_SYMBOL_GPL(dma_resv_wait_timeout); -static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence) -{ - struct dma_fence *fence, *lfence = passed_fence; - int ret = 1; - - if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &lfence->flags)) { - fence = dma_fence_get_rcu(lfence); - if (!fence) - return -1; - - ret = !!dma_fence_is_signaled(fence); - dma_fence_put(fence); - } - return ret; -} - /** * dma_resv_test_signaled - Test if a reservation object's fences have been * signaled. @@ -616,43 +600,16 @@ static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence) */ bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all) { + struct dma_resv_iter cursor; struct dma_fence *fence; - unsigned int seq; - int ret; - - rcu_read_lock(); -retry: - ret = true; - seq = read_seqcount_begin(&obj->seq); - - if (test_all) { - struct dma_resv_list *fobj = dma_resv_shared_list(obj); - unsigned int i, shared_count; - - shared_count = fobj ? fobj->shared_count : 0; - for (i = 0; i < shared_count; ++i) { - fence = rcu_dereference(fobj->shared[i]); - ret = dma_resv_test_signaled_single(fence); - if (ret < 0) - goto retry; - else if (!ret) - break; - } - } - - fence = dma_resv_excl_fence(obj); - if (ret && fence) { - ret = dma_resv_test_signaled_single(fence); - if (ret < 0) - goto retry; + dma_resv_iter_begin(&cursor, obj, test_all); + dma_resv_for_each_fence_unlocked(&cursor, fence) { + dma_resv_iter_end(&cursor); + return false; } - - if (read_seqcount_retry(&obj->seq, seq)) - goto retry; - - rcu_read_unlock(); - return ret; + dma_resv_iter_end(&cursor); + return true; } EXPORT_SYMBOL_GPL(dma_resv_test_signaled); |