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Date: Mon, 10 Oct 2022 15:55:18 -0700
From: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
To: <igt-dev@lists.freedesktop.org>, Lionel G Landwerlin
 <lionel.g.landwerlin@intel.com>, Ashutosh Dixit <ashutosh.dixit@intel.com>
Message-ID: <Y0Si1lgSJNbOHyuN@unerlige-ril>
References: <20221010214215.5378-1-umesh.nerlige.ramappa@intel.com>
 <20221010214215.5378-26-umesh.nerlige.ramappa@intel.com>
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Subject: Re: [igt-dev] [PATCH i-g-t v6 25/36] tools/i915-perf: printout CPU
 clock used
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On Mon, Oct 10, 2022 at 09:42:04PM +0000, Umesh Nerlige Ramappa wrote:
>From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
>
>Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>

>---
> tools/i915-perf/i915_perf_recorder.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
>diff --git a/tools/i915-perf/i915_perf_recorder.c b/tools/i915-perf/i915_perf_recorder.c
>index 72011c87..f8f9b737 100644
>--- a/tools/i915-perf/i915_perf_recorder.c
>+++ b/tools/i915-perf/i915_perf_recorder.c
>@@ -588,6 +588,17 @@ static uint64_t timespec_diff(struct timespec *begin,
>
> static clock_t correlation_clock_id = CLOCK_MONOTONIC;
>
>+static const char *
>+get_correlation_clock_name(clock_t clock_id)
>+{
>+  switch (clock_id) {
>+  case CLOCK_BOOTTIME:      return "bootime";
>+  case CLOCK_MONOTONIC:     return "monotonic";
>+  case CLOCK_MONOTONIC_RAW: return "monotonic_raw";
>+  default:                  return "*unknown*";
>+  }
>+}
>+
> static bool
> get_correlation_timestamps(struct intel_perf_record_timestamp_correlation *corr, int drm_fd)
> {
>@@ -1069,6 +1080,9 @@ main(int argc, char *argv[])
> 		goto fail;
> 	}
>
>+	fprintf(stdout, "Using correlation clock: %s\n",
>+		get_correlation_clock_name(correlation_clock_id));
>+
> 	ctx.oa_exponent = oa_exponent_for_period(ctx.oa_timestamp_frequency, perf_period);
> 	fprintf(stdout, "Opening perf stream with metric_id=%"PRIu64" oa_exponent=%u oa_format=%u\n",
> 		ctx.metric_set->perf_oa_metrics_set, ctx.oa_exponent,
>-- 
>2.25.1
>