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From: Len Brown <lenb@kernel.org>
To: linux-pm@vger.kernel.org
Cc: Zhang Rui <rui.zhang@intel.com>
Subject: [PATCH 25/26] tools/power/turbostat: Add support for Xe sysfs knobs
Date: Wed, 10 Apr 2024 09:19:48 -0400	[thread overview]
Message-ID: <91a91d389543a86963beec148d98d37875154bd4.1712754901.git.len.brown@intel.com> (raw)
In-Reply-To: <e5f4e68eed85fa8495d78cd966eecc2b27bb9e53.1712754901.git.len.brown@intel.com>

From: Zhang Rui <rui.zhang@intel.com>

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: Zhang Rui <rui.zhang@intel.com>
---
 tools/power/x86/turbostat/turbostat.c | 51 +++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index feca7f4cb5cd..bc103851df70 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -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";
-- 
2.40.1


  parent reply	other threads:[~2024-04-10 13:20 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <e5f4e68eed85fa8495d78cd966eecc2b27bb9e53.1712754901.git.len.brown@intel.com>
2024-04-10 13:19 ` [PATCH 22/26] tools/power/turbostat: Fix uncore frequency file string Len Brown
2024-04-10 13:19 ` [PATCH 23/26] tools/power/turbostat: Introduce BIC_SAM_mc6/BIC_SAMMHz/BIC_SAMACTMHz Len Brown
2024-04-10 13:19 ` [PATCH 24/26] tools/power/turbostat: Add support for new i915 sysfs knobs Len Brown
2024-04-10 13:19 ` Len Brown [this message]
2024-04-10 13:19 ` [PATCH 26/26] tools/power turbostat: v2024.04.10 Len Brown

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