[igt-dev] [PATCH i-g-t 1/2] tests/perf: bump max number of block/poll interations

[Lionel Landwerlin]

Those 2 tests fail regularly on HSW, probably because the OA period
aligns slightly differently there because of the differnce in the
timestamp frequency between HSW and other generation. Just bump the
max number by 1 to fix the issue.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102252
---
 tests/perf.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/tests/perf.c b/tests/perf.c
index 48b323e5..220c52ef 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -2025,7 +2025,7 @@ test_blocking(void)
 	int64_t tick_ns = 1000000000 / sysconf(_SC_CLK_TCK);
 	int64_t test_duration_ns = tick_ns * 1000;
 
-	int max_iterations = (test_duration_ns / oa_period) + 1;
+	int max_iterations = (test_duration_ns / oa_period) + 2;
 	int n_extra_iterations = 0;
 
 	/* It's a bit tricky to put a lower limit here, but we expect a
@@ -2116,12 +2116,6 @@ test_blocking(void)
 		n++;
 	}
 
-	/* Updated the maximum of iterations based on the time spent
-	 * in the loop.
-	 */
-	max_iterations = (end - start) / oa_period + 1;
-	igt_debug("adjusted max iter. = %d\n", max_iterations);
-
 	times(&end_times);
 
 	/* Using nanosecond units is fairly silly here, given the tick in-
@@ -2190,7 +2184,7 @@ test_polling(void)
 	int64_t tick_ns = 1000000000 / sysconf(_SC_CLK_TCK);
 	int64_t test_duration_ns = tick_ns * 1000;
 
-	int max_iterations = (test_duration_ns / oa_period) + 1;
+	int max_iterations = (test_duration_ns / oa_period) + 2;
 	int n_extra_iterations = 0;
 
 	/* It's a bit tricky to put a lower limit here, but we expect a
@@ -2309,12 +2303,6 @@ test_polling(void)
 		n++;
 	}
 
-	/* Updated the maximum of iterations based on the time spent
-	 * in the loop.
-	 */
-	max_iterations = (end - start) / oa_period + 1;
-	igt_debug("adjusted max iter. = %d\n", max_iterations);
-
 	times(&end_times);
 
 	/* Using nanosecond units is fairly silly here, given the tick in-
-- 
2.20.0.rc2