From: Chris Wilson <chris@chris-wilson.co.uk>
To: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Subject: [PATCH v2] dma-fence: Propagate errors to dma-fence-array container
Date: Mon, 25 Mar 2019 08:07:33 +0000 [thread overview]
Message-ID: <20190325080733.19204-1-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <20190324131831.11317-1-chris@chris-wilson.co.uk>
When one of the array of fences is signaled, propagate its errors to the
parent fence-array (keeping the first error to be raised).
v2: Opencode cmpxchg_local to avoid compiler freakout.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
---
drivers/dma-buf/dma-fence-array.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
index a8c254497251..223f6f85f585 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -21,6 +21,12 @@
#include <linux/slab.h>
#include <linux/dma-fence-array.h>
+static void fence_set_error_once(struct dma_fence *fence, int error)
+{
+ if (!fence->error && error)
+ dma_fence_set_error(fence, error);
+}
+
static const char *dma_fence_array_get_driver_name(struct dma_fence *fence)
{
return "dma_fence_array";
@@ -46,6 +52,13 @@ static void dma_fence_array_cb_func(struct dma_fence *f,
container_of(cb, struct dma_fence_array_cb, cb);
struct dma_fence_array *array = array_cb->array;
+ /*
+ * Propagate the first error reported by any of our fences, but only
+ * before we ourselves are signaled.
+ */
+ if (atomic_read(&array->num_pending) > 0)
+ fence_set_error_once(&array->base, f->error);
+
if (atomic_dec_and_test(&array->num_pending))
irq_work_queue(&array->work);
else
@@ -71,6 +84,8 @@ static bool dma_fence_array_enable_signaling(struct dma_fence *fence)
dma_fence_get(&array->base);
if (dma_fence_add_callback(array->fences[i], &cb[i].cb,
dma_fence_array_cb_func)) {
+ fence_set_error_once(&array->base,
+ array->fences[i]->error);
dma_fence_put(&array->base);
if (atomic_dec_and_test(&array->num_pending))
return false;
--
2.20.1
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next prev parent reply other threads:[~2019-03-25 8:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-24 13:18 [PATCH 1/2] dma-fence: Propagate errors to dma-fence-array container Chris Wilson
2019-03-24 13:18 ` [PATCH 2/2] dma-fence: Report the composite sync_file status Chris Wilson
2019-03-24 21:15 ` ✗ Fi.CI.BAT: failure for series starting with [1/2] dma-fence: Propagate errors to dma-fence-array container Patchwork
2019-03-25 2:21 ` [PATCH 1/2] " kbuild test robot
2019-03-25 8:07 ` Chris Wilson [this message]
2019-04-08 9:00 ` [PATCH v2] " Chris Wilson
2019-03-25 9:12 ` ✗ Fi.CI.BAT: failure for series starting with [v2] dma-fence: Propagate errors to dma-fence-array container (rev2) Patchwork
2019-03-25 11:08 ` [PATCH 1/2] dma-fence: Propagate errors to dma-fence-array container kbuild test robot
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