Commit 8a4fc850 authored by Chris Wilson's avatar Chris Wilson 🤔

intel_gpu_top: Sample BSD rings as well as render

Show how busy the GPU is when decoding video as well as rendering.
Signed-off-by: Chris Wilson's avatarChris Wilson <chris@chris-wilson.co.uk>
parent 4eef00a8
......@@ -283,10 +283,73 @@ print_percentage_bar(float percent, int cur_line_len)
printf("%*s", PERCENTAGE_BAR_END - cur_line_len, "");
}
struct ring {
const char *name;
uint32_t mmio;
uint32_t head, tail, size;
uint64_t full;
int idle;
};
static void ring_init(struct ring *ring)
{
ring->size = ((INREG(ring->mmio + RING_LEN) & RING_NR_PAGES) >> 12) * 4096;
}
static void ring_reset(struct ring *ring)
{
ring->idle = ring->full = 0;
}
static void ring_sample(struct ring *ring)
{
int full;
if (!ring->size)
return;
ring->head = INREG(ring->mmio + RING_HEAD) & HEAD_ADDR;
ring->tail = INREG(ring->mmio + RING_TAIL) & TAIL_ADDR;
if (ring->tail == ring->head)
ring->idle++;
full = ring->tail - ring->head;
if (full < 0)
full += ring->size;
ring->full += full;
}
static void ring_print(struct ring *ring)
{
int percent, len;
if (!ring->size)
return;
percent = 100 - ring->idle / SAMPLES_TO_PERCENT_RATIO;
len = printf("%25s busy: %3d%%: ", ring->name, percent);
print_percentage_bar (percent, len);
printf("%24s space: %d/%d (%d%%)\n",
ring->name,
(int)(ring->full / SAMPLES_PER_SEC),
ring->size,
(int)((ring->full / SAMPLES_TO_PERCENT_RATIO) / ring->size));
}
int main(int argc, char **argv)
{
struct pci_device *pci_dev;
uint32_t ring_size;
struct ring render_ring = {
.name = "render",
.mmio = 0x2030,
}, bsd_ring = {
.name = "bitstream",
.mmio = 0x4030,
}, bsd6_ring = {
.name = "bitstream",
.mmio = 0x12030,
};
uint32_t devid;
int i;
......@@ -301,22 +364,25 @@ int main(int argc, char **argv)
top_bits_sorted[i] = &top_bits[i];
}
ring_size = ((INREG(LP_RING + RING_LEN) & RING_NR_PAGES) >> 12) * 4096;
ring_init(&render_ring);
if (IS_GEN4(devid) || IS_IRONLAKE(devid))
ring_init(&bsd_ring);
if (IS_GEN6(devid))
ring_init(&bsd6_ring);
for (;;) {
int j;
char clear_screen[] = {0x1b, '[', 'H',
0x1b, '[', 'J',
0x0};
int total_ring_full = 0;
int ring_idle = 0;
int percent;
int len;
for (i = 0; i < SAMPLES_PER_SEC; i++) {
uint32_t ring_head, ring_tail;
int ring_full;
ring_reset(&render_ring);
ring_reset(&bsd_ring);
ring_reset(&bsd6_ring);
for (i = 0; i < SAMPLES_PER_SEC; i++) {
if (IS_965(devid)) {
instdone = INREG(INST_DONE_I965);
instdone1 = INREG(INST_DONE_1);
......@@ -326,18 +392,9 @@ int main(int argc, char **argv)
for (j = 0; j < num_instdone_bits; j++)
update_idle_bit(&top_bits[j]);
ring_head = INREG(LP_RING + RING_HEAD) & HEAD_ADDR;
ring_tail = INREG(LP_RING + RING_TAIL) & TAIL_ADDR;
if (ring_tail == ring_head)
ring_idle++;
ring_full = ring_tail - ring_head;
if (ring_full < 0)
ring_full += ring_size;
total_ring_full += ring_full;
ring_sample(&render_ring);
ring_sample(&bsd_ring);
ring_sample(&bsd6_ring);
usleep(1000000 / SAMPLES_PER_SEC);
}
......@@ -372,16 +429,11 @@ int main(int argc, char **argv)
print_clock_info(pci_dev);
percent = ring_idle / SAMPLES_TO_PERCENT_RATIO;
len = printf("%30s: %3d%%: ", "ring idle", percent);
print_percentage_bar (percent, len);
printf("%30s: %d/%d (%d%%)\n", "ring space",
total_ring_full / SAMPLES_PER_SEC,
ring_size,
(total_ring_full / SAMPLES_TO_PERCENT_RATIO) / ring_size);
ring_print(&render_ring);
ring_print(&bsd_ring);
ring_print(&bsd6_ring);
printf("%30s %s\n\n", "task", "percent busy");
printf("\n%30s %s\n", "task", "percent busy");
for (i = 0; i < max_lines; i++) {
if (top_bits_sorted[i]->count > 0) {
percent = top_bits_sorted[i]->count /
......
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