Commit 91a91d38 authored by Zhang Rui's avatar Zhang Rui Committed by Len Brown
Browse files

tools/power/turbostat: Add support for Xe sysfs knobs 



Xe graphics driver uses different graphics sysfs knobs including
   /sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms
   /sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq
   /sys/class/drm/card0/device/tile0/gt0/freq0/act_freq
   /sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms
   /sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq
   /sys/class/drm/card0/device/tile0/gt1/freq0/act_freq

Plus that,
   /sys/class/drm/card0/device/tile0/gt<n>/gtidle/name
returns either gt<n>-rc or gt<n>-mc. rc is for GFX and mc is SA Media.

Enhance turbostat to prefer the Xe sysfs knobs when they are available.
Export gt<n>-rc via BIC_GFX_rc6/BIC_GFXMHz/BIC_GFXACTMHz.
Export gt<n>-mc via BIC_SMA_mc6/BIC_SMAMHz/BIC_SMAACTMHz.

Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent dc02dc93

tools/power/x86/turbostat/turbostat.c

+51 −0
Original line number Diff line number Diff line
@@ -5380,6 +5380,57 @@ static void probe_intel_uncore_frequency(void) 


static void probe_graphics(void)

{

	/* Xe graphics sysfs knobs */

	if (!access("/sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms", R_OK)) {

		FILE *fp;

		char buf[8];

		bool gt0_is_gt;

		int idx;



		fp = fopen("/sys/class/drm/card0/device/tile0/gt0/gtidle/name", "r");

		if (!fp)

			goto next;



		if (!fread(buf, sizeof(char), 7, fp)) {

			fclose(fp);

			goto next;

		}

		fclose(fp);



		if (!strncmp(buf, "gt0-rc", strlen("gt0-rc")))

			gt0_is_gt = true;

		else if (!strncmp(buf, "gt0-mc", strlen("gt0-mc")))

			gt0_is_gt = false;

		else

			goto next;



		idx = gt0_is_gt ? GFX_rc6 : SAM_mc6;

		gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms";



		idx = gt0_is_gt ? GFX_MHz : SAM_MHz;

		if (!access("/sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq", R_OK))

			gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq";



		idx = gt0_is_gt ? GFX_ACTMHz : SAM_ACTMHz;

		if (!access("/sys/class/drm/card0/device/tile0/gt0/freq0/act_freq", R_OK))

			gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/freq0/act_freq";



		idx = gt0_is_gt ? SAM_mc6 : GFX_rc6;

		if (!access("/sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms", R_OK))

			gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms";



		idx = gt0_is_gt ? SAM_MHz : GFX_MHz;

		if (!access("/sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq", R_OK))

			gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq";



		idx = gt0_is_gt ? SAM_ACTMHz : GFX_ACTMHz;

		if (!access("/sys/class/drm/card0/device/tile0/gt1/freq0/act_freq", R_OK))

			gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/freq0/act_freq";



		goto end;

	}



next:

	/* New i915 graphics sysfs knobs */

	if (!access("/sys/class/drm/card0/gt/gt0/rc6_residency_ms", R_OK)) {

		gfx_info[GFX_rc6].path = "/sys/class/drm/card0/gt/gt0/rc6_residency_ms";