Commit ac4e8560 authored by Riana Tauro's avatar Riana Tauro Committed by Anshuman Gupta
Browse files

drm/i915/selftests: Add helper function measure_power 



move the power measurement and the triangle filter
to a different function. No functional changes.

Signed-off-by: default avatarRiana Tauro <riana.tauro@intel.com>
Reviewed-by: default avatarVinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: default avatarAnshuman Gupta <anshuman.gupta@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220923110043.789178-3-riana.tauro@intel.com
parent c09ae4ed

drivers/gpu/drm/i915/gt/selftest_rps.c

+9 −3
Original line number Diff line number Diff line
@@ -1107,21 +1107,27 @@ static u64 __measure_power(int duration_ms) 
	return div64_u64(1000 * 1000 * dE, dt);

}



static u64 measure_power_at(struct intel_rps *rps, int *freq)

static u64 measure_power(struct intel_rps *rps, int *freq)

{

	u64 x[5];

	int i;



	*freq = rps_set_check(rps, *freq);

	for (i = 0; i < 5; i++)

		x[i] = __measure_power(5);

	*freq = (*freq + read_cagf(rps)) / 2;



	*freq = (*freq + intel_rps_read_actual_frequency(rps)) / 2;



	/* A simple triangle filter for better result stability */

	sort(x, 5, sizeof(*x), cmp_u64, NULL);

	return div_u64(x[1] + 2 * x[2] + x[3], 4);

}



static u64 measure_power_at(struct intel_rps *rps, int *freq)

{

	*freq = rps_set_check(rps, *freq);

	return measure_power(rps, freq);

}



int live_rps_power(void *arg)

{

	struct intel_gt *gt = arg;