diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-07-25 15:46:56 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-09-06 19:04:16 +0100 |
| commit | 4a1c8daff2005e2cbfe980d63bc0a0fb09cb017d (patch) | |
| tree | 27ca4b126b63ac13a8ae9dbe04c5e2b0e6716048 /tests | |
| parent | 0d028f8fd07f0a4b46c9e4659eb3caf93a69ac11 (diff) | |
igt/gem_ringfill: Prime execbuf before measuring ring size
Make sure that our buffers are ready and loaded to reduce the initial
stall.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/gem_ringfill.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tests/gem_ringfill.c b/tests/gem_ringfill.c index b52996a4..01cbd0a9 100644 --- a/tests/gem_ringfill.c +++ b/tests/gem_ringfill.c @@ -288,10 +288,15 @@ static unsigned int measure_ring_size(int fd) obj[1].handle = gem_create(fd, 4096); gem_write(fd, obj[1].handle, 0, &bbe, sizeof(bbe)); + memset(&execbuf, 0, sizeof(execbuf)); + execbuf.buffers_ptr = to_user_pointer(obj + 1); + execbuf.buffer_count = 1; + gem_execbuf(fd, &execbuf); + gem_sync(fd, obj[1].handle); + plug(fd, &c); obj[0].handle = c.handle; - memset(&execbuf, 0, sizeof(execbuf)); execbuf.buffers_ptr = to_user_pointer(obj); execbuf.buffer_count = 2; @@ -302,7 +307,8 @@ static unsigned int measure_ring_size(int fd) itv.it_value.tv_usec = 1000; setitimer(ITIMER_REAL, &itv, NULL); - last = count = 0; + last = -1; + count = 0; do { if (__execbuf(fd, &execbuf) == 0) { count++; |