[Intel-gfx] [PATCH i-g-t 09/24] i915/gem_exec_big: Add a single shot test

Chris Wilson
2019-03-22T09:21:40Z

CI complains that the exhaustive test of trying every size up to the
limit is too slow, so add a simple test that tries to submit one
extreme batch buffer and check all the relocations land.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105555
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
tests/i915/gem_exec_big.c | 70 ++++++++++++++++++++++++++++++------
tests/intel-ci/blacklist.txt | 1 +
2 files changed, 60 insertions(+), 11 deletions(-)

diff --git a/tests/i915/gem_exec_big.c b/tests/i915/gem_exec_big.c
index a15672f66..015f59e29 100644
--- a/tests/i915/gem_exec_big.c
+++ b/tests/i915/gem_exec_big.c
@@ -71,7 +71,7 @@ static void exec1(int fd, uint32_t handle, uint64_t reloc_ofs, unsigned flags, c
gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
gem_exec[0].alignment = 0;
gem_exec[0].offset = 0;
- gem_exec[0].flags = 0;
+ gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
gem_exec[0].rsvd1 = 0;
gem_exec[0].rsvd2 = 0;

@@ -154,12 +154,11 @@ static void execN(int fd, uint32_t handle, uint64_t batch_size, unsigned flags,
gem_exec[0].handle = handle;
gem_exec[0].relocation_count = nreloc;
gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
+ gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;

memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(gem_exec);
execbuf.buffer_count = 1;
- execbuf.batch_start_offset = 0;
- execbuf.batch_len = 8;
execbuf.flags = flags;

/* Avoid hitting slowpaths in the reloc processing which might yield a
@@ -197,16 +196,10 @@ static void execN(int fd, uint32_t handle, uint64_t batch_size, unsigned flags,
#undef reloc_ofs
}

-igt_simple_main
+static void exhaustive(int fd)
{
uint32_t batch[2] = {MI_BATCH_BUFFER_END};
uint64_t batch_size, max, ggtt_max, reloc_ofs;
- int fd;
-
- fd = drm_open_driver(DRIVER_INTEL);
- igt_require_gem(fd);
-
- use_64bit_relocs = intel_gen(intel_get_drm_devid(fd)) >= 8;

max = 3 * gem_aperture_size(fd) / 4;
ggtt_max = 3 * gem_global_aperture_size(fd) / 4;
@@ -258,6 +251,61 @@ igt_simple_main
else
batch_size *= 2;
}
+}
+
+static void single(int i915)
+{
+ const uint32_t bbe = MI_BATCH_BUFFER_END;
+ uint64_t batch_size, limit;
+ uint32_t handle;
+ void *ptr;
+
+ batch_size = (intel_get_avail_ram_mb() - 128) << 20; /* CI slack */
+ limit = gem_aperture_size(i915) - (256 << 10); /* low pages reserved */
+ if (!gem_uses_full_ppgtt(i915))
+ limit = 3 * limit / 4;
+
+ batch_size = min(batch_size, limit);
+ batch_size = ALIGN(batch_size, 4096);
+ igt_info("Submitting a %'"PRId64"MiB batch, %saperture size %'"PRId64"MiB\n",
+ batch_size >> 20,
+ gem_uses_full_ppgtt(i915) ? "" : "shared ",
+ gem_aperture_size(i915) >> 20);
+ intel_require_memory(1, batch_size, CHECK_RAM);
+
+ handle = gem_create(i915, batch_size);
+ gem_write(i915, handle, 0, &bbe, sizeof(bbe));
+
+ if (!FORCE_PREAD_PWRITE && gem_has_llc(i915))
+ ptr = __gem_mmap__cpu(i915, handle, 0, batch_size, PROT_READ);
+ else if (!FORCE_PREAD_PWRITE && gem_mmap__has_wc(i915))
+ ptr = __gem_mmap__wc(i915, handle, 0, batch_size, PROT_READ);
+ else
+ ptr = NULL;
+
+ execN(i915, handle, batch_size, 0, ptr);
+
+ if (ptr)
+ munmap(ptr, batch_size);
+}
+
+igt_main
+{
+ int i915 = -1;
+
+ igt_fixture {
+ i915 = drm_open_driver(DRIVER_INTEL);
+ igt_require_gem(i915);
+
+ use_64bit_relocs = intel_gen(intel_get_drm_devid(i915)) >= 8;
+ }
+
+ igt_subtest("single")
+ single(i915);
+
+ igt_subtest("exhaustive")
+ exhaustive(i915);

- close(fd);
+ igt_fixture
+ close(i915);
}
diff --git a/tests/intel-ci/blacklist.txt b/tests/intel-ci/blacklist.txt
index a2101ae71..ae61efe3f 100644
--- a/tests/intel-ci/blacklist.txt
+++ b/tests/intel-ci/blacklist.txt
@@ -28,6 +28,7 @@ igt@gem_ctx_thrash(@.*)?
igt@gem_evict_alignment(@.*)?
igt@gem_evict_everything(@.*)?
igt@gem_exec_alignment@(?!.*single).*
+igt@gem_exec_big@(?!.*single).*
igt@gem_exec_capture@many-(?!4K-).*
igt@gem_exec_fence@(?!.*basic).*
igt@gem_exec_flush@(?!.*basic).*
--
2.20.1

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