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| author | Christian König <christian.koenig@amd.com> | 2021-09-23 14:57:42 +0300 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2021-11-11 11:35:13 +0300 |
| commit | a25efb3863d068929f0bbeb87a995df11507e691 (patch) | |
| tree | b43a55873cc98ab05efd650af21ec82ed8c57851 /drivers/dma-buf/dma-resv.c | |
| parent | 781050b0a3164934857c300bb0bc291e38c26b6f (diff) | |
| download | linux-a25efb3863d068929f0bbeb87a995df11507e691.tar.xz | |
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-resv.c')
| -rw-r--r-- | drivers/dma-buf/dma-resv.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c index 9eb2baa387d4..ff3c0558b3b8 100644 --- a/drivers/dma-buf/dma-resv.c +++ b/drivers/dma-buf/dma-resv.c @@ -38,6 +38,7 @@ #include <linux/mm.h> #include <linux/sched/mm.h> #include <linux/mmu_notifier.h> +#include <linux/seq_file.h> /** * DOC: Reservation Object Overview @@ -666,6 +667,28 @@ bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all) } EXPORT_SYMBOL_GPL(dma_resv_test_signaled); +/** + * dma_resv_describe - Dump description of the resv object into seq_file + * @obj: the reservation object + * @seq: the seq_file to dump the description into + * + * Dump a textual description of the fences inside an dma_resv object into the + * seq_file. + */ +void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq) +{ + struct dma_resv_iter cursor; + struct dma_fence *fence; + + dma_resv_for_each_fence(&cursor, obj, true, fence) { + seq_printf(seq, "\t%s fence:", + dma_resv_iter_is_exclusive(&cursor) ? + "Exclusive" : "Shared"); + dma_fence_describe(fence, seq); + } +} +EXPORT_SYMBOL_GPL(dma_resv_describe); + #if IS_ENABLED(CONFIG_LOCKDEP) static int __init dma_resv_lockdep(void) { |