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igt/gem_concurrent_blit: Scale resource usage to RAM correctly

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Note that we use twice the number of buffers, and so we need to restrict
num_buffers appropriately to fit within RAM.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72255
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-01-26 14:36:32 +00:00
parent b5109e62ce
commit 0b4c33f62c
1 changed files with 31 additions and 14 deletions
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45
tests/gem_concurrent_blit.c
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@ -54,27 +54,42 @@
static void static void
prw_set_bo(drm_intel_bo *bo, uint32_t val, int width, int height) prw_set_bo(drm_intel_bo *bo, uint32_t val, int width, int height)
{ {
int size = width * height; int size = width * height, i;
uint32_t *vaddr, *tmp; uint32_t *tmp;
vaddr = tmp = malloc(size*4); tmp = malloc(4*size);
while (size--) if (tmp) {
*vaddr++ = val; for (i = 0; i < size; i++)
drm_intel_bo_subdata(bo, 0, width*height*4, tmp); tmp[i] = val;
free(tmp); drm_intel_bo_subdata(bo, 0, 4*size, tmp);
free(tmp);
} else {
for (i = 0; i < size; i++)
drm_intel_bo_subdata(bo, 4*i, 4, &val);
}
} }
static void static void
prw_cmp_bo(drm_intel_bo *bo, uint32_t val, int width, int height) prw_cmp_bo(drm_intel_bo *bo, uint32_t val, int width, int height)
{ {
int size = width * height; int size = width * height, i;
uint32_t *vaddr, *tmp; uint32_t *tmp;
vaddr = tmp = malloc(size*4); tmp = malloc(4*size);
drm_intel_bo_get_subdata(bo, 0, size*4, tmp); if (tmp) {
while (size--) memset(tmp, 0, 4*size);
igt_assert(*vaddr++ == val); do_or_die(drm_intel_bo_get_subdata(bo, 0, 4*size, tmp));
free(tmp); for (i = 0; i < size; i++)
igt_assert(tmp[i] == val);
free(tmp);
} else {
uint32_t t;
for (i = 0; i < size; i++) {
t = 0;
do_or_die(drm_intel_bo_get_subdata(bo, 4*i, 4, &t));
igt_assert(t == val);
}
}
} }
static drm_intel_bo * static drm_intel_bo *
@ -370,6 +385,8 @@ igt_main
max = intel_get_total_ram_mb() * 3 / 4; max = intel_get_total_ram_mb() * 3 / 4;
if (num_buffers > max) if (num_buffers > max)
num_buffers = max; num_buffers = max;
num_buffers /= 2;
printf("using 2x%d buffers, each 1MiB\n", num_buffers);
} }
for (i = 0; i < ARRAY_SIZE(access_modes); i++) for (i = 0; i < ARRAY_SIZE(access_modes); i++)