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tools/power turbostat: Add support for /sys/class/drm/card1

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On some machines, the graphics device is enumerated as
/sys/class/drm/card1 instead of /sys/class/drm/card0. The current
implementation does not handle this scenario, resulting in the loss of
graphics C6 residency and frequency information.

Add support for /sys/class/drm/card1, ensuring that turbostat can
retrieve and display the graphics columns for these platforms.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Zhang Rui 2024-11-14 15:59:46 +08:00 committed by Len Brown
parent c7538f3385
commit 03109e2f0d
1 changed files with 34 additions and 14 deletions
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48
tools/power/x86/turbostat/turbostat.c
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@ -6476,8 +6476,14 @@ static void set_graphics_fp(char *path, int idx)
gfx_info[idx].fp = fopen_or_die(path, "r");
}
/* Enlarge this if there are /sys/class/drm/card2 ... */
#define GFX_MAX_CARDS 2
static void probe_graphics(void)
{
char path[PATH_MAX];
int i;
/* Xe graphics sysfs knobs */
if (!access("/sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms", R_OK)) {
FILE *fp;
@ -6518,22 +6524,36 @@ static void probe_graphics(void)
next:
/* New i915 graphics sysfs knobs */
if (!access("/sys/class/drm/card0/gt/gt0/rc6_residency_ms", R_OK)) {
set_graphics_fp("/sys/class/drm/card0/gt/gt0/rc6_residency_ms", GFX_rc6);
set_graphics_fp("/sys/class/drm/card0/gt/gt0/rps_cur_freq_mhz", GFX_MHz);
set_graphics_fp("/sys/class/drm/card0/gt/gt0/rps_act_freq_mhz", GFX_ACTMHz);
set_graphics_fp("/sys/class/drm/card0/gt/gt1/rc6_residency_ms", SAM_mc6);
set_graphics_fp("/sys/class/drm/card0/gt/gt1/rps_cur_freq_mhz", SAM_MHz);
set_graphics_fp("/sys/class/drm/card0/gt/gt1/rps_act_freq_mhz", SAM_ACTMHz);
goto end;
for (i = 0; i < GFX_MAX_CARDS; i++) {
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt0/rc6_residency_ms", i);
if (!access(path, R_OK))
break;
}
if (i == GFX_MAX_CARDS)
goto legacy_i915;
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt0/rc6_residency_ms", i);
set_graphics_fp(path, GFX_rc6);
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt0/rps_cur_freq_mhz", i);
set_graphics_fp(path, GFX_MHz);
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt0/rps_act_freq_mhz", i);
set_graphics_fp(path, GFX_ACTMHz);
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt1/rc6_residency_ms", i);
set_graphics_fp(path, SAM_mc6);
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt1/rps_cur_freq_mhz", i);
set_graphics_fp(path, SAM_MHz);
snprintf(path, PATH_MAX, "/sys/class/drm/card%d/gt/gt1/rps_act_freq_mhz", i);
set_graphics_fp(path, SAM_ACTMHz);
goto end;
legacy_i915:
/* Fall back to traditional i915 graphics sysfs knobs */
set_graphics_fp("/sys/class/drm/card0/power/rc6_residency_ms", GFX_rc6);