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drm/i915: Return residency as microseconds

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Change the granularity from milliseconds to microseconds
when returning rc6 residencies. This is in preparation
for increased resolution on some platforms.

v2: use 64bit div macro (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Mika Kuoppala
2017-03-15 17:43:00 +02:00
committed by Mika Kuoppala
parent 135bafa551
commit c5a0ad114b
3 changed files with 10 additions and 9 deletions
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3
drivers/gpu/drm/i915/i915_sysfs.c
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@@ -42,7 +42,8 @@ static inline struct drm_i915_private *kdev_minor_to_i915(struct device *kdev)
static u32 calc_residency(struct drm_i915_private *dev_priv,
i915_reg_t reg)
{
return intel_rc6_residency(dev_priv, reg);
return DIV_ROUND_CLOSEST_ULL(intel_rc6_residency_us(dev_priv, reg),
1000);
}
static ssize_t