oa_period 2867 drivers/gpu/drm/i915/i915_perf.c u64 oa_period, oa_freq_hz; oa_period 2926 drivers/gpu/drm/i915/i915_perf.c BUILD_BUG_ON(sizeof(oa_period) != 8); oa_period 2927 drivers/gpu/drm/i915/i915_perf.c oa_period = oa_exponent_to_ns(dev_priv, value); oa_period 2935 drivers/gpu/drm/i915/i915_perf.c if (oa_period <= NSEC_PER_SEC) { oa_period 2937 drivers/gpu/drm/i915/i915_perf.c do_div(tmp, oa_period);