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gem_pwrite_pread: Use mmap to bypass pwrite/pread for comparison

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Just to help sanity test alternate paths.
This commit is contained in:
Chris Wilson 2013-08-06 18:03:18 +01:00
parent e4a7c2fe6d
commit d9bc787673
1 changed files with 240 additions and 3 deletions
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243
tests/gem_pwrite_pread.c
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@ -93,7 +93,112 @@ static void copy(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loo
gem_close(fd, exec[2].handle); gem_close(fd, exec[2].handle);
} }
static void test(int fd, uint32_t src, uint32_t dst, uint32_t *buf, int len) static void as_gtt_mmap(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__gtt(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__gtt(fd, dst, OBJECT_SIZE, PROT_READ);
while (loops--) {
gem_set_domain(fd, src,
I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
memcpy(src_ptr, buf, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_set_domain(fd, dst,
I915_GEM_DOMAIN_GTT, 0);
memcpy(buf, dst_ptr, len);
}
munmap(dst_ptr, len);
munmap(src_ptr, len);
gem_close(fd, exec[2].handle);
}
static void as_cpu_mmap(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__cpu(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__cpu(fd, dst, OBJECT_SIZE, PROT_READ);
while (loops--) {
gem_set_domain(fd, src,
I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
memcpy(src_ptr, buf, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_set_domain(fd, dst,
I915_GEM_DOMAIN_CPU, 0);
memcpy(buf, dst_ptr, len);
}
munmap(dst_ptr, len);
munmap(src_ptr, len);
gem_close(fd, exec[2].handle);
}
static void test_copy(int fd, uint32_t src, uint32_t dst, uint32_t *buf, int len)
{ {
struct drm_i915_gem_relocation_entry reloc[] = { struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER }, { dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
@ -141,6 +246,110 @@ static void test(int fd, uint32_t src, uint32_t dst, uint32_t *buf, int len)
assert(buf[i] == i); assert(buf[i] == i);
} }
static void test_as_gtt_mmap(int fd, uint32_t src, uint32_t dst, int len)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
int i;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__gtt(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__gtt(fd, dst, OBJECT_SIZE, PROT_READ);
gem_set_domain(fd, src, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
for (i = 0; i < len/4; i++)
src_ptr[i] = i;
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_close(fd, exec[2].handle);
gem_set_domain(fd, dst, I915_GEM_DOMAIN_GTT, 0);
for (i = 0; i < len/4; i++)
assert(dst_ptr[i] == i);
munmap(dst_ptr, len);
munmap(src_ptr, len);
}
static void test_as_cpu_mmap(int fd, uint32_t src, uint32_t dst, int len)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
int i;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__cpu(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__cpu(fd, dst, OBJECT_SIZE, PROT_READ);
gem_set_domain(fd, src, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
for (i = 0; i < len/4; i++)
src_ptr[i] = i;
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_close(fd, exec[2].handle);
gem_set_domain(fd, dst, I915_GEM_DOMAIN_CPU, 0);
for (i = 0; i < len/4; i++)
assert(dst_ptr[i] == i);
munmap(dst_ptr, len);
munmap(src_ptr, len);
}
static double elapsed(const struct timeval *start, static double elapsed(const struct timeval *start,
const struct timeval *end, const struct timeval *end,
int loop) int loop)
@ -190,7 +399,7 @@ int main(int argc, char **argv)
gem_set_cacheing(fd, src, 0); gem_set_cacheing(fd, src, 0);
gem_set_cacheing(fd, dst, 0); gem_set_cacheing(fd, dst, 0);
test(fd, src, dst, tmp, object_size); test_copy(fd, src, dst, tmp, object_size);
for (count = 1; count <= 1<<17; count <<= 1) { for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end; struct timeval start, end;
@ -204,9 +413,23 @@ int main(int argc, char **argv)
fflush(stdout); fflush(stdout);
} }
test_as_gtt_mmap(fd, src, dst, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
as_gtt_mmap(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("** mmap uncached copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
gem_set_cacheing(fd, src, 1); gem_set_cacheing(fd, src, 1);
gem_set_cacheing(fd, dst, 1); gem_set_cacheing(fd, dst, 1);
test(fd, src, dst, tmp, object_size); test_copy(fd, src, dst, tmp, object_size);
for (count = 1; count <= 1<<17; count <<= 1) { for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end; struct timeval start, end;
@ -220,6 +443,20 @@ int main(int argc, char **argv)
fflush(stdout); fflush(stdout);
} }
test_as_cpu_mmap(fd, src, dst, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
as_cpu_mmap(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("** mmap snooped copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
free(tmp); free(tmp);
gem_close(fd, src); gem_close(fd, src);
gem_close(fd, dst); gem_close(fd, dst);