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igt/gem_pwrite: Add backwards/random access patterns

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-04-15 09:45:45 +01:00
parent 4233b59608
commit e0145eabba
1 changed files with 119 additions and 26 deletions
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131
tests/gem_pwrite.c
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@ -79,52 +79,126 @@ static const char *bytes_per_sec(char *buf, double v)
return buf; return buf;
} }
static void test_big_cpu(int fd, int scale) #define FORWARD 0x1
#define BACKWARD 0x2
#define RANDOM 0x4
static void test_big_cpu(int fd, int scale, unsigned flags)
{ {
uint64_t offset, size; uint64_t offset, size;
uint32_t handle; uint32_t handle;
size = scale * gem_global_aperture_size(fd) >> 2; switch (scale) {
case 0:
size = gem_mappable_aperture_size() + 4096;
break;
case 1:
size = gem_global_aperture_size(fd) + 4096;
break;
case 2:
size = gem_aperture_size(fd) + 4096;
break;
}
intel_require_memory(1, size, CHECK_RAM); intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd));
handle = gem_create(fd, size); handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU); gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
if (flags & FORWARD) {
igt_debug("Forwards\n");
for (offset = 0; offset < size; offset += 4096) { for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 - sizeof(offset)); int suboffset = (offset >> 12) % (4096 - sizeof(offset));
uint64_t tmp; uint64_t tmp;
gem_write(fd, handle, offset + suboffset , &offset, sizeof(offset)); gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset));
gem_read(fd, handle, offset + suboffset, &tmp, sizeof(tmp)); gem_read(fd, handle, offset + suboffset, &tmp, sizeof(tmp));
igt_assert_eq(offset, tmp); igt_assert_eq_u64(offset, tmp);
}
}
if (flags & BACKWARD) {
igt_debug("Backwards\n");
for (offset = size >> 12; offset--; ) {
int suboffset = 4096 - (offset % (4096 - sizeof(offset)));
uint64_t tmp;
gem_write(fd, handle, (offset<<12) + suboffset, &offset, sizeof(offset));
gem_read(fd, handle, (offset<<12) + suboffset, &tmp, sizeof(tmp));
igt_assert_eq_u64(offset, tmp);
}
}
if (flags & RANDOM) {
igt_debug("Random\n");
for (offset = 0; offset < size >> 12; offset++) {
uint64_t tmp = rand() % (size >> 12);
int suboffset = tmp % (4096 - sizeof(offset));
gem_write(fd, handle, (tmp << 12) + suboffset, &offset, sizeof(offset));
gem_read(fd, handle, (tmp << 12) + suboffset, &tmp, sizeof(tmp));
igt_assert_eq_u64(offset, tmp);
}
} }
gem_close(fd, handle); gem_close(fd, handle);
} }
static void test_big_gtt(int fd, int scale) static void test_big_gtt(int fd, int scale, unsigned flags)
{ {
uint64_t offset, size; uint64_t offset, size;
uint64_t *ptr; uint64_t *ptr;
uint32_t handle; uint32_t handle;
size = scale * gem_global_aperture_size(fd) >> 2;
intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd)); igt_require(gem_mmap__has_wc(fd));
switch (scale) {
case 0:
size = gem_mappable_aperture_size() + 4096;
break;
case 1:
size = gem_global_aperture_size(fd) + 4096;
break;
case 2:
size = gem_aperture_size(fd) + 4096;
break;
}
intel_require_memory(1, size, CHECK_RAM);
handle = gem_create(fd, size); handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ); ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ);
if (flags & FORWARD) {
igt_debug("Forwards\n");
for (offset = 0; offset < size; offset += 4096) { for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 / sizeof(offset) - 1) * sizeof(offset); int suboffset = (offset >> 12) % (4096 / sizeof(offset) - 1) * sizeof(offset);
gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset)); gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset));
igt_assert_eq(ptr[(offset + suboffset)/sizeof(offset)], offset); gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0);
igt_assert_eq_u64(ptr[(offset + suboffset)/sizeof(offset)], offset);
}
}
if (flags & BACKWARD) {
igt_debug("Backwards\n");
for (offset = size >> 12; offset--; ) {
int suboffset = (4096 - (offset % (4096 - sizeof(offset)))) & -sizeof(offset);
gem_write(fd, handle, (offset<<12) + suboffset, &offset, sizeof(offset));
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0);
igt_assert_eq_u64(ptr[((offset<<12) + suboffset)/sizeof(offset)], offset);
}
}
if (flags & RANDOM) {
igt_debug("Random\n");
for (offset = 0; offset < size >> 12; offset++) {
uint64_t tmp = rand() % (size >> 12);
int suboffset = (tmp % 4096) & -sizeof(offset);
tmp = (tmp << 12) + suboffset;
gem_write(fd, handle, tmp, &offset, sizeof(offset));
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0);
igt_assert_eq_u64(ptr[tmp/sizeof(offset)], offset);
}
} }
munmap(ptr, size); munmap(ptr, size);
@ -248,15 +322,34 @@ int main(int argc, char **argv)
gem_close(fd, dst_stolen); gem_close(fd, dst_stolen);
} }
igt_subtest("big-cpu") {
test_big_cpu(fd, 3); const struct mode {
igt_subtest("big-gtt") const char *name;
test_big_gtt(fd, 3); unsigned flags;
} modes[] = {
{ "forwards", FORWARD },
{ "backwards", BACKWARD },
{ "random", RANDOM },
{ "fbr", FORWARD | BACKWARD | RANDOM },
{ NULL },
}, *m;
for (m = modes; m->name; m++) {
igt_subtest_f("small-cpu-%s", m->name)
test_big_cpu(fd, 0, m->flags);
igt_subtest_f("small-gtt-%s", m->name)
test_big_gtt(fd, 0, m->flags);
igt_subtest("huge-cpu") igt_subtest_f("big-cpu-%s", m->name)
test_big_cpu(fd, 6); test_big_cpu(fd, 1, m->flags);
igt_subtest("huge-gtt") igt_subtest_f("big-gtt-%s", m->name)
test_big_gtt(fd, 6); test_big_gtt(fd, 1, m->flags);
igt_subtest_f("huge-cpu-%s", m->name)
test_big_cpu(fd, 2, m->flags);
igt_subtest_f("huge-gtt-%s", m->name)
test_big_gtt(fd, 2, m->flags);
}
}
igt_fixture igt_fixture
close(fd); close(fd);