From: Tvrtko Ursulin <[email protected]>

Since i915 PMU is removing separate RC6 counters and now aggregates all
under a single one, catch up the test and intel-gpu-overlay with those
changes.

Signed-off-by: Tvrtko Ursulin <[email protected]>
---
 lib/igt_perf.h   |  4 +---
 overlay/rc6.c    | 45 +++++++--------------------------------------
 tests/perf_pmu.c | 53 -----------------------------------------------------
 3 files changed, 8 insertions(+), 94 deletions(-)

diff --git a/lib/igt_perf.h b/lib/igt_perf.h
index 5428feb0c746..7b66fc582b88 100644
--- a/lib/igt_perf.h
+++ b/lib/igt_perf.h
@@ -64,10 +64,8 @@ enum drm_i915_pmu_engine_sample {
 #define I915_PMU_REQUESTED_FREQUENCY   __I915_PMU_OTHER(1)
 #define I915_PMU_INTERRUPTS            __I915_PMU_OTHER(2)
 #define I915_PMU_RC6_RESIDENCY         __I915_PMU_OTHER(3)
-#define I915_PMU_RC6p_RESIDENCY                __I915_PMU_OTHER(4)
-#define I915_PMU_RC6pp_RESIDENCY       __I915_PMU_OTHER(5)
 
-#define I915_PMU_LAST I915_PMU_RC6pp_RESIDENCY
+#define I915_PMU_LAST I915_PMU_RC6_RESIDENCY
 
 static inline int
 perf_event_open(struct perf_event_attr *attr,
diff --git a/overlay/rc6.c b/overlay/rc6.c
index 8977f0993095..b5286f0cf8c6 100644
--- a/overlay/rc6.c
+++ b/overlay/rc6.c
@@ -35,34 +35,12 @@
 
 #include "rc6.h"
 
-#define RC6    (1<<0)
-#define RC6p   (1<<1)
-#define RC6pp  (1<<2)
-
-static int perf_open(unsigned *flags)
-{
-       int fd;
-
-       fd = perf_i915_open_group(I915_PMU_RC6_RESIDENCY, -1);
-       if (fd < 0)
-               return -1;
-
-       *flags |= RC6;
-       if (perf_i915_open_group(I915_PMU_RC6p_RESIDENCY, fd) >= 0)
-               *flags |= RC6p;
-
-       if (perf_i915_open_group(I915_PMU_RC6pp_RESIDENCY, fd) >= 0)
-               *flags |= RC6pp;
-
-       return fd;
-}
-
 int rc6_init(struct rc6 *rc6)
 {
        memset(rc6, 0, sizeof(*rc6));
 
-       rc6->fd = perf_open(&rc6->flags);
-       if (rc6->fd == -1) {
+       rc6->fd = perf_i915_open(I915_PMU_RC6_RESIDENCY);
+       if (rc6->fd < 0) {
                struct stat st;
                if (stat("/sys/class/drm/card0/power", &st) < 0)
                        return rc6->error = errno;
@@ -110,7 +88,7 @@ int rc6_update(struct rc6 *rc6)
        if (rc6->error)
                return rc6->error;
 
-       if (rc6->fd == -1) {
+       if (rc6->fd < 0) {
                struct stat st;
 
                if (stat("/sys/class/drm/card0/power/rc6_residency_ms", &st) < 
0)
@@ -121,22 +99,13 @@ int rc6_update(struct rc6 *rc6)
                s->rc6pp_residency = 
file_to_u64("/sys/class/drm/card0/power/rc6pp_residency_ms");
                s->timestamp = clock_ms_to_u64();
        } else {
-               uint64_t data[5];
-               int len;
+               uint64_t data[2];
 
-               len = read(rc6->fd, data, sizeof(data));
-               if (len < 0)
+               if (read(rc6->fd, data, sizeof(data)) < sizeof(data))
                        return rc6->error = errno;
 
-               s->timestamp = data[1] / (1000*1000);
-
-               len = 2;
-               if (rc6->flags & RC6)
-                       s->rc6_residency = data[len++] / 1e6;
-               if (rc6->flags & RC6p)
-                       s->rc6p_residency = data[len++] / 1e6;
-               if (rc6->flags & RC6pp)
-                       s->rc6pp_residency = data[len++] / 1e6;
+               s->timestamp = data[1] / 1e6;
+               s->rc6_residency = data[0] / 1e6;
        }
 
        if (rc6->count == 1)
diff --git a/tests/perf_pmu.c b/tests/perf_pmu.c
index a19fd2ac45a2..8d58ecea3528 100644
--- a/tests/perf_pmu.c
+++ b/tests/perf_pmu.c
@@ -1019,53 +1019,6 @@ test_rc6(int gem_fd)
        assert_within_epsilon(busy - prev, 0.0, tolerance);
 }
 
-static void
-test_rc6p(int gem_fd)
-{
-       int64_t duration_ns = 2e9;
-       unsigned int num_pmu = 1;
-       uint64_t idle[3], busy[3], prev[3];
-       unsigned int slept, i;
-       int fd, ret, fw;
-
-       fd = open_group(I915_PMU_RC6_RESIDENCY, -1);
-       ret = perf_i915_open_group(I915_PMU_RC6p_RESIDENCY, fd);
-       if (ret > 0) {
-               num_pmu++;
-               ret = perf_i915_open_group(I915_PMU_RC6pp_RESIDENCY, fd);
-               if (ret > 0)
-                       num_pmu++;
-       }
-
-       igt_require(num_pmu == 3);
-
-       gem_quiescent_gpu(gem_fd);
-       usleep(100e3); /* wait for the rc6 cycle counter to kick in */
-
-       /* Go idle and check full RC6. */
-       pmu_read_multi(fd, num_pmu, prev);
-       slept = measured_usleep(duration_ns / 1000);
-       pmu_read_multi(fd, num_pmu, idle);
-
-       for (i = 0; i < num_pmu; i++)
-               assert_within_epsilon(idle[i] - prev[i], slept, tolerance);
-
-       /* Wake up device and check no RC6. */
-       fw = igt_open_forcewake_handle(gem_fd);
-       igt_assert(fw >= 0);
-       usleep(1e3); /* wait for the rc6 cycle counter to stop ticking */
-
-       pmu_read_multi(fd, num_pmu, prev);
-       usleep(duration_ns / 1000);
-       pmu_read_multi(fd, num_pmu, busy);
-
-       close(fw);
-       close(fd);
-
-       for (i = 0; i < num_pmu; i++)
-               assert_within_epsilon(busy[i] - prev[i], 0.0, tolerance);
-}
-
 igt_main
 {
        const unsigned int num_other_metrics =
@@ -1205,12 +1158,6 @@ igt_main
        igt_subtest("rc6")
                test_rc6(fd);
 
-       /**
-        * Test RC6p residency reporting.
-        */
-       igt_subtest("rc6p")
-               test_rc6p(fd);
-
        /**
         * Check render nodes are counted.
         */
-- 
2.14.1

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