diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_request.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_request.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c index 8618a4dc0701..9e6d3159cd80 100644 --- a/drivers/gpu/drm/i915/selftests/i915_request.c +++ b/drivers/gpu/drm/i915/selftests/i915_request.c @@ -32,6 +32,7 @@ #include "i915_random.h" #include "i915_selftest.h" #include "igt_live_test.h" +#include "igt_spinner.h" #include "lib_sw_fence.h" #include "mock_drm.h" @@ -1116,12 +1117,85 @@ static int __live_parallel_engineN(void *arg) return 0; } +static bool wake_all(struct drm_i915_private *i915) +{ + if (atomic_dec_and_test(&i915->selftest.counter)) { + wake_up_var(&i915->selftest.counter); + return true; + } + + return false; +} + +static int wait_for_all(struct drm_i915_private *i915) +{ + if (wake_all(i915)) + return 0; + + if (wait_var_event_timeout(&i915->selftest.counter, + !atomic_read(&i915->selftest.counter), + i915_selftest.timeout_jiffies)) + return 0; + + return -ETIME; +} + +static int __live_parallel_spin(void *arg) +{ + struct intel_engine_cs *engine = arg; + struct igt_spinner spin; + struct i915_request *rq; + int err = 0; + + /* + * Create a spinner running for eternity on each engine. If a second + * spinner is incorrectly placed on the same engine, it will not be + * able to start in time. + */ + + if (igt_spinner_init(&spin, engine->gt)) { + wake_all(engine->i915); + return -ENOMEM; + } + + rq = igt_spinner_create_request(&spin, + engine->kernel_context, + MI_NOOP); /* no preemption */ + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + if (err == -ENODEV) + err = 0; + wake_all(engine->i915); + goto out_spin; + } + + i915_request_get(rq); + i915_request_add(rq); + if (igt_wait_for_spinner(&spin, rq)) { + /* Occupy this engine for the whole test */ + err = wait_for_all(engine->i915); + } else { + pr_err("Failed to start spinner on %s\n", engine->name); + err = -EINVAL; + } + igt_spinner_end(&spin); + + if (err == 0 && i915_request_wait(rq, 0, HZ / 5) < 0) + err = -EIO; + i915_request_put(rq); + +out_spin: + igt_spinner_fini(&spin); + return err; +} + static int live_parallel_engines(void *arg) { struct drm_i915_private *i915 = arg; static int (* const func[])(void *arg) = { __live_parallel_engine1, __live_parallel_engineN, + __live_parallel_spin, NULL, }; const unsigned int nengines = num_uabi_engines(i915); @@ -1147,6 +1221,8 @@ static int live_parallel_engines(void *arg) if (err) break; + atomic_set(&i915->selftest.counter, nengines); + idx = 0; for_each_uabi_engine(engine, i915) { tsk[idx] = kthread_run(*fn, engine, |