From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/include/asm-generic/bug.h | 71 ++++++++++++++++-------------------
1 files changed, 32 insertions(+), 39 deletions(-)
diff --git a/kernel/include/asm-generic/bug.h b/kernel/include/asm-generic/bug.h
index d4fb510..6fc3396 100644
--- a/kernel/include/asm-generic/bug.h
+++ b/kernel/include/asm-generic/bug.h
@@ -3,6 +3,7 @@
#define _ASM_GENERIC_BUG_H
#include <linux/compiler.h>
+#include <linux/instrumentation.h>
#define CUT_HERE "------------[ cut here ]------------\n"
@@ -10,6 +11,7 @@
#define BUGFLAG_WARNING (1 << 0)
#define BUGFLAG_ONCE (1 << 1)
#define BUGFLAG_DONE (1 << 2)
+#define BUGFLAG_NO_CUT_HERE (1 << 3) /* CUT_HERE already sent */
#define BUGFLAG_TAINT(taint) ((taint) << 8)
#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
#endif
@@ -61,18 +63,6 @@
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
#endif
-#ifdef __WARN_FLAGS
-#define __WARN_TAINT(taint) __WARN_FLAGS(BUGFLAG_TAINT(taint))
-#define __WARN_ONCE_TAINT(taint) __WARN_FLAGS(BUGFLAG_ONCE|BUGFLAG_TAINT(taint))
-
-#define WARN_ON_ONCE(condition) ({ \
- int __ret_warn_on = !!(condition); \
- if (unlikely(__ret_warn_on)) \
- __WARN_ONCE_TAINT(TAINT_WARN); \
- unlikely(__ret_warn_on); \
-})
-#endif
-
/*
* WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report
* significant kernel issues that need prompt attention if they should ever
@@ -89,27 +79,32 @@
*
* Use the versions with printk format strings to provide better diagnostics.
*/
-#ifndef __WARN_TAINT
-extern __printf(3, 4)
-void warn_slowpath_fmt(const char *file, const int line,
- const char *fmt, ...);
+#ifndef __WARN_FLAGS
extern __printf(4, 5)
-void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
- const char *fmt, ...);
-extern void warn_slowpath_null(const char *file, const int line);
-#define WANT_WARN_ON_SLOWPATH
-#define __WARN() warn_slowpath_null(__FILE__, __LINE__)
-#define __WARN_printf(arg...) warn_slowpath_fmt(__FILE__, __LINE__, arg)
-#define __WARN_printf_taint(taint, arg...) \
- warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg)
+void warn_slowpath_fmt(const char *file, const int line, unsigned taint,
+ const char *fmt, ...);
+#define __WARN() __WARN_printf(TAINT_WARN, NULL)
+#define __WARN_printf(taint, arg...) do { \
+ instrumentation_begin(); \
+ warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \
+ instrumentation_end(); \
+ } while (0)
#else
extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
-#define __WARN() do { \
- printk(KERN_WARNING CUT_HERE); __WARN_TAINT(TAINT_WARN); \
-} while (0)
-#define __WARN_printf(arg...) __WARN_printf_taint(TAINT_WARN, arg)
-#define __WARN_printf_taint(taint, arg...) \
- do { __warn_printk(arg); __WARN_TAINT(taint); } while (0)
+#define __WARN() __WARN_FLAGS(BUGFLAG_TAINT(TAINT_WARN))
+#define __WARN_printf(taint, arg...) do { \
+ instrumentation_begin(); \
+ __warn_printk(arg); \
+ __WARN_FLAGS(BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\
+ instrumentation_end(); \
+ } while (0)
+#define WARN_ON_ONCE(condition) ({ \
+ int __ret_warn_on = !!(condition); \
+ if (unlikely(__ret_warn_on)) \
+ __WARN_FLAGS(BUGFLAG_ONCE | \
+ BUGFLAG_TAINT(TAINT_WARN)); \
+ unlikely(__ret_warn_on); \
+})
#endif
/* used internally by panic.c */
@@ -132,7 +127,7 @@
#define WARN(condition, format...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
- __WARN_printf(format); \
+ __WARN_printf(TAINT_WARN, format); \
unlikely(__ret_warn_on); \
})
#endif
@@ -140,13 +135,13 @@
#define WARN_TAINT(condition, taint, format...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
- __WARN_printf_taint(taint, format); \
+ __WARN_printf(taint, format); \
unlikely(__ret_warn_on); \
})
#ifndef WARN_ON_ONCE
#define WARN_ON_ONCE(condition) ({ \
- static bool __section(.data.once) __warned; \
+ static bool __section(".data.once") __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
@@ -158,7 +153,7 @@
#endif
#define WARN_ONCE(condition, format...) ({ \
- static bool __section(.data.once) __warned; \
+ static bool __section(".data.once") __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
@@ -169,7 +164,7 @@
})
#define WARN_TAINT_ONCE(condition, taint, format...) ({ \
- static bool __section(.data.once) __warned; \
+ static bool __section(".data.once") __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
@@ -180,12 +175,13 @@
})
#else /* !CONFIG_BUG */
+
#ifndef HAVE_ARCH_BUG
#define BUG() do {} while (1)
#endif
#ifndef HAVE_ARCH_BUG_ON
-#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
+#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
#endif
#ifndef HAVE_ARCH_WARN_ON
@@ -213,9 +209,6 @@
/*
* WARN_ON_SMP() is for cases that the warning is either
* meaningless for !SMP or may even cause failures.
- * This is usually used for cases that we have
- * WARN_ON(!spin_is_locked(&lock)) checks, as spin_is_locked()
- * returns 0 for uniprocessor settings.
* It can also be used with values that are only defined
* on SMP:
*
--
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