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tests/gem_reset_stats: stop only one ring when submitting hang

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If we stop all the rings, we can end up blaming the innocent
rings on hangcheck.

Reference: https://bugs.freedesktop.org/show_bug.cgi?id=73652
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Mika Kuoppala 2014-01-21 17:40:08 +02:00 committed by Daniel Vetter
parent 1bbb607d9f
commit c05c88c2b6
1 changed files with 20 additions and 3 deletions
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23
tests/gem_reset_stats.c
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@ -237,20 +237,37 @@ static int exec_valid(int fd, int ctx)
return exec_valid_ring(fd, ctx, current_ring->exec);
}
static void stop_rings(void)
static void stop_rings(const int mask)
{
int fd;
char buf[80];
igt_assert((mask & ~((1 << NUM_RINGS) - 1)) == 0);
igt_assert(snprintf(buf, sizeof(buf), "0x%02x", mask) == 4);
fd = igt_debugfs_open(&dfs, "i915_ring_stop", O_WRONLY);
igt_assert(fd >= 0);
igt_assert(write(fd, "0xff", 4) == 4);
igt_assert(write(fd, buf, 4) == 4);
close(fd);
}
#define BUFSIZE (4 * 1024)
#define ITEMS (BUFSIZE >> 2)
static int ring_to_mask(int ring)
{
for (unsigned i = 0; i < NUM_RINGS; i++) {
const struct target_ring *r = &rings[i];
if (r->exec == ring)
return (1 << i);
}
igt_assert(0);
return -1;
}
static int inject_hang_ring(int fd, int ctx, int ring)
{
struct drm_i915_gem_execbuffer2 execbuf;
@ -340,7 +357,7 @@ static int inject_hang_ring(int fd, int ctx, int ring)
free(buf);
stop_rings();
stop_rings(ring_to_mask(ring));
return exec.handle;
}