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| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2020-02-16 16:36:20 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-16 18:16:22 +0300 |
| commit | 1883a0a4658eaba354db2179b4d3395247d27582 (patch) | |
| tree | 00c31e7c325e18a19c515a3638d26cf08ba61a07 /drivers/gpu/drm/i915/intel_device_info.c | |
| parent | 0f8839f5f323da04a800e6ced1136e4b1e1689a9 (diff) | |
| download | linux-1883a0a4658eaba354db2179b4d3395247d27582.tar.xz | |
drm/i915: Track hw reported context runtime
GPU saves accumulated context runtime (in CS timestamp units) in PPHWSP
which will be useful for us in cases when we are not able to track context
busyness ourselves (like with GuC). Keep a copy of this in struct
intel_context from where it can be easily read even if the context is not
pinned.
v2:
(Chris)
* Do not store pphwsp address in intel_context.
* Log CS wrap-around.
* Simplify calculation by relying on integer wraparound.
v3:
* Include total/avg in traces and error state for debugging
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200216133620.394962-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_device_info.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_device_info.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index fcdacd6d4aa5..a97437fac884 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -1045,6 +1045,12 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv) /* Initialize command stream timestamp frequency */ runtime->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv); + runtime->cs_timestamp_period_ns = + div_u64(1e6, runtime->cs_timestamp_frequency_khz); + drm_dbg(&dev_priv->drm, + "CS timestamp wraparound in %lldms\n", + div_u64(mul_u32_u32(runtime->cs_timestamp_period_ns, S32_MAX), + USEC_PER_SEC)); } void intel_driver_caps_print(const struct intel_driver_caps *caps, |