drm/xe/throttle: Skip reason prefix while emitting array

The newly introduced "reasons" attribute already signifies possible
reasons for throttling and makes the prefix in individual attribute
names redundant while emitting them as an array. Skip the prefix.

Fixes: 83ccde67a3f7 ("drm/xe/gt_throttle: Avoid TOCTOU when monitoring reasons")
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Sk Anirban <sk.anirban@intel.com>
Link: https://patch.msgid.link/20251203123355.571606-1-raag.jadav@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit b64a14334ef3ebbcf70d11bc67d0934bdc0e390d)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

diff --git a/drivers/gpu/drm/xe/xe_gt_throttle.c b/drivers/gpu/drm/xe/xe_gt_throttle.c
index 82c5fbcdfbe3e2ea420e96b34eb44dabd7e7c0d7..01477fc7b37b9f3799f7ddccc3e62cc8c632f68d 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_throttle.c
+++ b/drivers/gpu/drm/xe/xe_gt_throttle.c
@@ -140,7 +140,7 @@ static ssize_t reasons_show(struct kobject *kobj,
                struct throttle_attribute *other_ta = kobj_attribute_to_throttle(kattr);
 
                if (other_ta->mask != U32_MAX && reasons & other_ta->mask)
-                       ret += sysfs_emit_at(buff, ret, "%s ", (*pother)->name);
+                       ret += sysfs_emit_at(buff, ret, "%s ", (*pother)->name + strlen("reason_"));
        }
 
        if (drm_WARN_ONCE(&xe->drm, !ret, "Unknown reason: %#x\n", reasons))