diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-07-03 09:42:38 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-07-03 11:23:05 +0100 |
| commit | 376b813e7c60826357034f4ea40ffada514fbdc3 (patch) | |
| tree | 12d829ab778cd16e0b41eea88d8153163e624485 /tests/kms_cursor_legacy.c | |
| parent | 3e765840129a17b462565f7b48dfe9d9792b292f (diff) | |
igt/gem_exec_gttfill: Reduce overhead in setting up filler batches
Since all the batches start with the same content, we can reuse the same
buf to fill them.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'tests/kms_cursor_legacy.c')
| -rw-r--r-- | tests/kms_cursor_legacy.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/tests/kms_cursor_legacy.c b/tests/kms_cursor_legacy.c index 192a0cf3..7dca383e 100644 --- a/tests/kms_cursor_legacy.c +++ b/tests/kms_cursor_legacy.c @@ -26,6 +26,7 @@ #include <sched.h> #include "igt.h" +#include "igt_rand.h" #include "igt_stats.h" #if defined(__x86_64__) || defined(__i386__) @@ -41,16 +42,6 @@ struct data { drmModeRes *resources; }; -static uint32_t state = 0x12345678; - -static uint32_t -hars_petruska_f54_1_random (void) -{ -#define rol(x,k) ((x << k) | (x >> (32-k))) - return state = (state ^ rol (state, 5) ^ rol (state, 24)) + 0x37798849; -#undef rol -} - static void stress(struct data *data, uint32_t *crtc_id, unsigned num_crtcs, int num_children, unsigned mode, @@ -94,9 +85,9 @@ static void stress(struct data *data, CPU_SET(child, &allowed); sched_setaffinity(getpid(), sizeof(cpu_set_t), &allowed); - state ^= child; + hars_petruska_f54_1_random_perturb(child); igt_until_timeout(timeout) { - arg.crtc_id = crtc_id[hars_petruska_f54_1_random() % num_crtcs]; + arg.crtc_id = crtc_id[hars_petruska_f54_1_random_unsafe() % num_crtcs]; do_ioctl(data->fd, DRM_IOCTL_MODE_CURSOR, &arg); count++; } |