diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-03-22 17:24:15 +0000 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-03-26 10:20:24 +0100 |
| commit | 9d9978aff16949c1a4e1508301d8169a21362ae8 (patch) | |
| tree | 1d831414ad5ab4e643d071fcc06dd08cbdffcbd3 /lib/igt_dummyload.h | |
| parent | c2ee90774496a9772f17a7a359d7a670bf7d6b85 (diff) | |
lib/dummyload: Add pollable spin batch
Pollable spin batch exports a spin->running pointer which can be checked
by dereferencing it to see if the spinner is actually executing on the
GPU.
This is useful for tests which want to make sure they do not proceed with
their next step whilst the spinner is potentially only being processed by
the driver and not actually executing.
Pollable spinner can be created with igt_spin_batch_new_poll or
__igt_spin_batch_new_poll, after which igt_spin_busywait_until_running can
be used to busy wait until it is executing.
v2:
* Move READ_ONCE to igt_core.
* Add igt_spin_busywait_until_running. (Chris Wilson)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'lib/igt_dummyload.h')
| -rw-r--r-- | lib/igt_dummyload.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/igt_dummyload.h b/lib/igt_dummyload.h index 4103e4ab..a8ec213f 100644 --- a/lib/igt_dummyload.h +++ b/lib/igt_dummyload.h @@ -36,6 +36,10 @@ typedef struct igt_spin { struct igt_list link; uint32_t *batch; int out_fence; + struct drm_i915_gem_exec_object2 obj[2]; + struct drm_i915_gem_execbuffer2 execbuf; + uint32_t poll_handle; + bool *running; } igt_spin_t; igt_spin_t *__igt_spin_batch_new(int fd, @@ -55,10 +59,23 @@ igt_spin_t *igt_spin_batch_new_fence(int fd, uint32_t ctx, unsigned engine); +igt_spin_t *__igt_spin_batch_new_poll(int fd, + uint32_t ctx, + unsigned engine); +igt_spin_t *igt_spin_batch_new_poll(int fd, + uint32_t ctx, + unsigned engine); + void igt_spin_batch_set_timeout(igt_spin_t *spin, int64_t ns); void igt_spin_batch_end(igt_spin_t *spin); void igt_spin_batch_free(int fd, igt_spin_t *spin); +static inline void igt_spin_busywait_until_running(igt_spin_t *spin) +{ + while (!READ_ONCE(*spin->running)) + ; +} + void igt_terminate_spin_batches(void); enum igt_cork_type { |