[Intel-gfx] [PATCH i-g-t 24/29] igt/perf: fix rc6 test

[Lionel Landwerlin]

From: Robert Bragg <rob...@sixbynine.org>

When measuring that rc6 doesn't happen, we need to do so after opening
the OA stream.

Signed-off-by: Robert Bragg <rob...@sixbynine.org>
Signed-off-by: Lionel Landwerlin <lionel.g.landwer...@intel.com>
---
 tests/perf.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tests/perf.c b/tests/perf.c
index 887836e2..9fd40ff0 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -3444,12 +3444,13 @@ test_rc6_disable(void)
                .num_properties = sizeof(properties) / 16,
                .properties_ptr = to_user_pointer(properties),
        };
-       uint64_t n_events_start = read_debugfs_u64_record(drm_fd, 
"i915_drpc_info",
-                                                         "RC6 residency since 
boot");
-       uint64_t n_events_end;
+       uint64_t n_events_start, n_events_end;
 
        stream_fd = __perf_open(drm_fd, &param);
 
+       n_events_start = read_debugfs_u64_record(drm_fd, "i915_drpc_info",
+                                                "RC6 residency since boot");
+
        nanosleep(&(struct timespec){ .tv_sec = 0, .tv_nsec = 500000000 }, 
NULL);
 
        n_events_end = read_debugfs_u64_record(drm_fd, "i915_drpc_info",
@@ -3462,7 +3463,7 @@ test_rc6_disable(void)
        n_events_start = read_debugfs_u64_record(drm_fd, "i915_drpc_info",
                                                 "RC6 residency since boot");
 
-       nanosleep(&(struct timespec){ .tv_sec = 0, .tv_nsec = 500000000 }, 
NULL);
+       nanosleep(&(struct timespec){ .tv_sec = 1, .tv_nsec = 0 }, NULL);
 
        n_events_end = read_debugfs_u64_record(drm_fd, "i915_drpc_info",
                                               "RC6 residency since boot");
-- 
2.11.0

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