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authorChristian König <christian.koenig@amd.com>2021-09-23 13:57:42 +0200
committerChristian König <christian.koenig@amd.com>2021-11-11 09:35:13 +0100
commita25efb3863d068929f0bbeb87a995df11507e691 (patch)
treeb43a55873cc98ab05efd650af21ec82ed8c57851 /drivers/dma-buf/dma-fence.c
parent781050b0a3164934857c300bb0bc291e38c26b6f (diff)
downloadlinux-a25efb3863d068929f0bbeb87a995df11507e691.tar.bz2
dma-buf: add dma_fence_describe and dma_resv_describe v2
Add functions to dump dma_fence and dma_resv objects into a seq_file and use them for printing the debugfs information. v2: fix missing include reported by test robot. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Rob Clark <robdclark@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211103081231.18578-2-christian.koenig@amd.com
Diffstat (limited to 'drivers/dma-buf/dma-fence.c')
-rw-r--r--drivers/dma-buf/dma-fence.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index 1e82ecd443fa..066400ed8841 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -15,6 +15,7 @@
#include <linux/atomic.h>
#include <linux/dma-fence.h>
#include <linux/sched/signal.h>
+#include <linux/seq_file.h>
#define CREATE_TRACE_POINTS
#include <trace/events/dma_fence.h>
@@ -908,6 +909,22 @@ err_free_cb:
EXPORT_SYMBOL(dma_fence_wait_any_timeout);
/**
+ * dma_fence_describe - Dump fence describtion into seq_file
+ * @fence: the 6fence to describe
+ * @seq: the seq_file to put the textual description into
+ *
+ * Dump a textual description of the fence and it's state into the seq_file.
+ */
+void dma_fence_describe(struct dma_fence *fence, struct seq_file *seq)
+{
+ seq_printf(seq, "%s %s seq %llu %ssignalled\n",
+ fence->ops->get_driver_name(fence),
+ fence->ops->get_timeline_name(fence), fence->seqno,
+ dma_fence_is_signaled(fence) ? "" : "un");
+}
+EXPORT_SYMBOL(dma_fence_describe);
+
+/**
* dma_fence_init - Initialize a custom fence.
* @fence: the fence to initialize
* @ops: the dma_fence_ops for operations on this fence