From 36245bd02e88e68ac5955c2958c968879d7b75a9 Mon Sep 17 00:00:00 2001
From: Luben Tuikov <ltuikov89@gmail.com>
Date: Thu, 9 Nov 2023 19:11:46 -0500
Subject: [PATCH] drm/sched: Define pr_fmt() for DRM using pr_*()
Define pr_fmt() as "[drm] " for DRM code using pr_*() facilities, especially
when no devices are available. This makes it easier to browse kernel logs.
Signed-off-by: Luben Tuikov <ltuikov89@gmail.com>
Acked-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231110002659.113208-2-ltuikov89@gmail.com
---
include/drm/drm_print.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index a93a387f8a1a1..e8fe60d0eb878 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -26,6 +26,20 @@
#ifndef DRM_PRINT_H_
#define DRM_PRINT_H_
+/* Define this before including linux/printk.h, so that the format
+ * string in pr_*() macros is correctly set for DRM. If a file wants
+ * to define this to something else, it should do so before including
+ * this header file.
+ *
+ * It is encouraged code using pr_err() to prefix their format with
+ * the string "*ERROR* ", to make it easier to scan kernel logs. For
+ * instance,
+ * pr_err("*ERROR* <the rest of your format string here>", args).
+ */
+#ifndef pr_fmt
+#define pr_fmt(fmt) "[drm] " fmt
+#endif
+
#include <linux/compiler.h>
#include <linux/printk.h>
#include <linux/seq_file.h>
--
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