On 16/12/2020 16:54, Chris Wilson wrote:
We cannot assume we know how many PMU there are exactly, so pick -1ULL
to represent all invalid metrics. Similarly, we have to rely on explicit
testing for each PMU to prove their existence and correct functioning.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
tests/i915/perf_pmu.c | 56 ++++++++++++-------------------------------
1 file changed, 15 insertions(+), 41 deletions(-)
diff --git a/tests/i915/perf_pmu.c b/tests/i915/perf_pmu.c
index e2f975a1a..db375341c 100644
--- a/tests/i915/perf_pmu.c
+++ b/tests/i915/perf_pmu.c
@@ -1165,38 +1165,12 @@ do { \
igt_assert_eq(errno, EINVAL);
}
-static void init_other(int i915, unsigned int i, bool valid)
+static void open_invalid(int i915)
{
int fd;
- fd = perf_i915_open(i915, __I915_PMU_OTHER(i));
- igt_require(!(fd < 0 && errno == ENODEV));
- if (valid) {
- igt_assert(fd >= 0);
- } else {
- igt_assert(fd < 0);
- return;
- }
-
- close(fd);
-}
-
-static void read_other(int i915, unsigned int i, bool valid)
-{
- int fd;
-
- fd = perf_i915_open(i915, __I915_PMU_OTHER(i));
- igt_require(!(fd < 0 && errno == ENODEV));
- if (valid) {
- igt_assert(fd >= 0);
- } else {
- igt_assert(fd < 0);
- return;
- }
-
- (void)pmu_read_single(fd);
-
- close(fd);
+ fd = perf_i915_open(i915, -1ULL);
+ igt_assert(fd < 0);
}
static bool cpu0_hotplug_support(void)
@@ -2058,6 +2032,12 @@ igt_main
unsigned int num_engines = 0;
int fd = -1;
+ /**
+ * All PMU should be accompanied by a test.
+ *
+ * Including all the I915_PMU_OTHER(x).
+ */
+
igt_fixture {
fd = __drm_open_driver(DRIVER_INTEL);
@@ -2075,6 +2055,12 @@ igt_main
igt_subtest("invalid-init")
invalid_init(fd);
+ /**
+ * Double check the invalid metric does fail.
+ */
+ igt_subtest("invalid-open")
+ open_invalid(fd);
+
igt_subtest_with_dynamic("faulting-read") {
for_each_mmap_offset_type(fd, t) {
igt_dynamic_f("%s", t->name)
@@ -2228,18 +2214,6 @@ igt_main
all_busy_check_all(fd, num_engines,
TEST_BUSY | TEST_TRAILING_IDLE);
- /**
- * Test that non-engine counters can be initialized and read. Apart
- * from the invalid metric which should fail.
- */
- for (unsigned int i = 0; i < num_other_metrics + 1; i++) {
- igt_subtest_f("other-init-%u", i)
- init_other(fd, i, i < num_other_metrics);
-
- igt_subtest_f("other-read-%u", i)
- read_other(fd, i, i < num_other_metrics);
- }
-
/**
* Test counters are not affected by CPU offline/online events.
*/
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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