With parallel submission it should be easy to get a fence array as the output fence. Try importing this into dma-buf reservation object, to see if anything explodes.
References: https://gitlab.freedesktop.org/drm/intel/-/issues/7532 Signed-off-by: Matthew Auld <matthew.a...@intel.com> Cc: Andrzej Hajda <andrzej.ha...@intel.com> Cc: Nirmoy Das <nirmoy....@intel.com> --- tests/i915/gem_exec_balancer.c | 39 ++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/tests/i915/gem_exec_balancer.c b/tests/i915/gem_exec_balancer.c index 4300dbd1..fdae8de5 100644 --- a/tests/i915/gem_exec_balancer.c +++ b/tests/i915/gem_exec_balancer.c @@ -37,6 +37,7 @@ #include "igt_sysfs.h" #include "igt_types.h" #include "sw_sync.h" +#include <linux/dma-buf.h> IGT_TEST_DESCRIPTION("Exercise in-kernel load-balancing"); @@ -2856,6 +2857,24 @@ static void logical_sort_siblings(int i915, #define PARALLEL_SUBMIT_FENCE (0x1 << 3) #define PARALLEL_CONTEXTS (0x1 << 4) #define PARALLEL_VIRTUAL (0x1 << 5) +#define PARALLEL_OUT_FENCE_DMABUF (0x1 << 6) + +struct igt_dma_buf_sync_file { + __u32 flags; + __s32 fd; +}; + +#define IGT_DMA_BUF_IOCTL_EXPORT_SYNC_FILE _IOWR(DMA_BUF_BASE, 2, struct igt_dma_buf_sync_file) +#define IGT_DMA_BUF_IOCTL_IMPORT_SYNC_FILE _IOW(DMA_BUF_BASE, 3, struct igt_dma_buf_sync_file) + +static void dmabuf_import_sync_file(int dmabuf, uint32_t flags, int sync_fd) +{ + struct igt_dma_buf_sync_file arg; + + arg.flags = flags; + arg.fd = sync_fd; + do_ioctl(dmabuf, IGT_DMA_BUF_IOCTL_IMPORT_SYNC_FILE, &arg); +} static void parallel_thread(int i915, unsigned int flags, struct i915_engine_class_instance *siblings, @@ -2871,6 +2890,8 @@ static void parallel_thread(int i915, unsigned int flags, uint32_t target_bo_idx = 0; uint32_t first_bb_idx = 1; intel_ctx_cfg_t cfg; + uint32_t dmabuf_handle; + int dmabuf; igt_assert(bb_per_execbuf < 32); @@ -2924,11 +2945,20 @@ static void parallel_thread(int i915, unsigned int flags, execbuf.buffers_ptr = to_user_pointer(obj); execbuf.rsvd1 = ctx->id; + if (flags & PARALLEL_OUT_FENCE_DMABUF) { + dmabuf_handle = gem_create(i915, 4096); + dmabuf = prime_handle_to_fd(i915, dmabuf_handle); + } + for (n = 0; n < PARALLEL_BB_LOOP_COUNT; ++n) { execbuf.flags &= ~0x3full; gem_execbuf_wr(i915, &execbuf); if (flags & PARALLEL_OUT_FENCE) { + if (flags & PARALLEL_OUT_FENCE_DMABUF) + dmabuf_import_sync_file(dmabuf, DMA_BUF_SYNC_WRITE, + execbuf.rsvd2 >> 32); + igt_assert_eq(sync_fence_wait(execbuf.rsvd2 >> 32, 1000), 0); igt_assert_eq(sync_fence_status(execbuf.rsvd2 >> 32), 1); @@ -2959,6 +2989,11 @@ static void parallel_thread(int i915, unsigned int flags, if (fence) close(fence); + if (flags & PARALLEL_OUT_FENCE_DMABUF) { + gem_close(i915, dmabuf_handle); + close(dmabuf); + } + check_bo(i915, obj[target_bo_idx].handle, bb_per_execbuf * PARALLEL_BB_LOOP_COUNT, true); @@ -3420,6 +3455,10 @@ igt_main igt_subtest("parallel-out-fence") parallel(i915, PARALLEL_OUT_FENCE); + igt_subtest("parallel-out-fence-import-dmabuf") + parallel(i915, PARALLEL_OUT_FENCE | + PARALLEL_OUT_FENCE_DMABUF); + igt_subtest("parallel-keep-in-fence") parallel(i915, PARALLEL_OUT_FENCE | PARALLEL_IN_FENCE); -- 2.38.1
