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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-03-02 17:39:42 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-05-14 20:04:02 +0300 |
| commit | 802a5820fc0c0f12b40280db3dbaaf8359b07243 (patch) | |
| tree | 2a3cdb0537a79899356f3e34de3e2aa1464dbdfa /drivers/gpu/drm/i915/selftests | |
| parent | 56f1b31f1dd60db4b02024a13eea45b5bbccc44e (diff) | |
| download | linux-802a5820fc0c0f12b40280db3dbaaf8359b07243.tar.xz | |
drm/i915: Extract i915_cs_timestamp_{ns_to_ticks,tick_to_ns}()
Pull the code to do the CS timestamp ns<->ticks conversion into
helpers and use them all over.
The check in i915_perf_noa_delay_set() seems a bit dubious,
so we switch it to do what I assume it wanted to do all along
(ie. make sure the resulting delay in CS timestamp ticks
doesn't exceed 32bits)?
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200302143943.32676-5-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/selftests')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_perf.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_perf.c b/drivers/gpu/drm/i915/selftests/i915_perf.c index 5edfcfd42a31..8eb3108f1767 100644 --- a/drivers/gpu/drm/i915/selftests/i915_perf.c +++ b/drivers/gpu/drm/i915/selftests/i915_perf.c @@ -262,8 +262,7 @@ static int live_noa_delay(void *arg) delay = intel_read_status_page(stream->engine, 0x102); delay -= intel_read_status_page(stream->engine, 0x100); - delay = div_u64(mul_u32_u32(delay, 1000000000), - RUNTIME_INFO(i915)->cs_timestamp_frequency_hz); + delay = i915_cs_timestamp_ticks_to_ns(i915, delay); pr_info("GPU delay: %uns, expected %lluns\n", delay, expected); |