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gem_stress: variable gpu busy load

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Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2011-03-27 15:25:12 +02:00
parent 22fe098bf5
commit 294c78f4ab
1 changed files with 27 additions and 4 deletions
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31
tests/gem_stress.c
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@ -109,6 +109,7 @@ drm_intel_bo *busy_bo;
static struct { static struct {
unsigned scratch_buf_size; unsigned scratch_buf_size;
int no_hw; int no_hw;
int gpu_busy_load;
} options; } options;
#define MAX_BUFS 4096 #define MAX_BUFS 4096
@ -128,6 +129,7 @@ static unsigned num_total_tiles = 0;
#define TILES_PER_BUF (num_total_tiles / num_buffers) #define TILES_PER_BUF (num_total_tiles / num_buffers)
static int fence_storm = 0; static int fence_storm = 0;
static int gpu_busy_load = 10;
static void tile2xy(struct scratch_buf *buf, unsigned tile, unsigned *x, unsigned *y) static void tile2xy(struct scratch_buf *buf, unsigned tile, unsigned *x, unsigned *y)
{ {
@ -137,10 +139,11 @@ static void tile2xy(struct scratch_buf *buf, unsigned tile, unsigned *x, unsigne
} }
/* All this gem trashing wastes too much cpu time, so give the gpu something to /* All this gem trashing wastes too much cpu time, so give the gpu something to
* do to increase changes for races. TODO: Should be autotuned. */ * do to increase changes for races. */
static void keep_gpu_busy(void) static void keep_gpu_busy(void)
{ {
uint32_t src_pitch, dst_pitch, cmd_bits; uint32_t src_pitch, dst_pitch, cmd_bits;
int tmp;
src_pitch = 4096; src_pitch = 4096;
dst_pitch = 4096; dst_pitch = 4096;
@ -157,6 +160,8 @@ static void keep_gpu_busy(void)
cmd_bits |= XY_SRC_COPY_BLT_DST_TILED; cmd_bits |= XY_SRC_COPY_BLT_DST_TILED;
} }
#endif #endif
tmp = 1 << gpu_busy_load;
assert(tmp <= 1024);
/* copy lower half to upper half */ /* copy lower half to upper half */
BEGIN_BATCH(8); BEGIN_BATCH(8);
@ -168,7 +173,7 @@ static void keep_gpu_busy(void)
(0xcc << 16) | /* copy ROP */ (0xcc << 16) | /* copy ROP */
dst_pitch); dst_pitch);
OUT_BATCH(128 << 16 | 0); OUT_BATCH(128 << 16 | 0);
OUT_BATCH(256 << 16 | 1024); OUT_BATCH(256 << 16 | tmp);
OUT_RELOC(busy_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0); OUT_RELOC(busy_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
OUT_BATCH(0 << 16 | 0); OUT_BATCH(0 << 16 | 0);
OUT_BATCH(src_pitch); OUT_BATCH(src_pitch);
@ -446,6 +451,13 @@ static void init_set(unsigned set)
permute_array(buffers[set], num_buffers, exchange_buf); permute_array(buffers[set], num_buffers, exchange_buf);
if (current_set == 1 && options.gpu_busy_load == 0) {
gpu_busy_load++;
if (gpu_busy_load > 10)
gpu_busy_load = 6;
}
for (i = 0; i < num_buffers; i++) { for (i = 0; i < num_buffers; i++) {
r = random(); r = random();
if ((r & 3) != 0) if ((r & 3) != 0)
@ -552,13 +564,15 @@ static void parse_options(int argc, char **argv)
int option_index = 0; int option_index = 0;
static struct option long_options[] = { static struct option long_options[] = {
{"no-hw", 0, 0, 'd'}, {"no-hw", 0, 0, 'd'},
{"buf-size", 1, 0, 's'} {"buf-size", 1, 0, 's'},
{"gpu-busy-load", 1, 0, 'g'}
}; };
options.scratch_buf_size = 256*4096; options.scratch_buf_size = 256*4096;
options.no_hw = 0; options.no_hw = 0;
options.gpu_busy_load = 0;
while((c = getopt_long(argc, argv, "ns:", while((c = getopt_long(argc, argv, "ns:g:",
long_options, &option_index)) != -1) { long_options, &option_index)) != -1) {
switch(c) { switch(c) {
case 'd': case 'd':
@ -577,6 +591,15 @@ static void parse_options(int argc, char **argv)
options.scratch_buf_size = tmp; options.scratch_buf_size = tmp;
} }
break; break;
case 'g':
tmp = atoi(optarg);
if (tmp < 0 || tmp > 10)
printf("gpu busy load needs to be bigger than 0 and smaller than 10\n");
else {
printf("gpu busy load factor set to %i\n", tmp);
gpu_busy_load = options.gpu_busy_load = tmp;
}
break;
default: default:
printf("unkown command options\n"); printf("unkown command options\n");
break; break;