Merge branch 'sched/core' into cpus4096

[safe/jmp/linux-2.6] / include / asm-generic / bug.h

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 1a0e1a7..12c07c1 100644 (file)
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -22,7 +22,7 @@ struct bug_entry {
 
 #ifndef HAVE_ARCH_BUG
 #define BUG() do { \
-       printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
+       printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
        panic("BUG!"); \
 } while (0)
 #endif
@@ -32,11 +32,16 @@ struct bug_entry {
 #endif
 
 #ifndef __WARN
-#define __WARN() do {                                                  \
-       printk("WARNING: at %s:%d %s()\n", __FILE__,                    \
-               __LINE__, __FUNCTION__);                                \
-       dump_stack();                                                   \
-} while (0)
+#ifndef __ASSEMBLY__
+extern void warn_on_slowpath(const char *file, const int line);
+extern void warn_slowpath(const char *file, const int line,
+               const char *fmt, ...) __attribute__((format(printf, 3, 4)));
+#define WANT_WARN_ON_SLOWPATH
+#endif
+#define __WARN() warn_on_slowpath(__FILE__, __LINE__)
+#define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg)
+#else
+#define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0)
 #endif
 
 #ifndef WARN_ON
@@ -48,6 +53,15 @@ struct bug_entry {
 })
 #endif
 
+#ifndef WARN
+#define WARN(condition, format...) ({                                          \
+       int __ret_warn_on = !!(condition);                              \
+       if (unlikely(__ret_warn_on))                                    \
+               __WARN_printf(format);                                  \
+       unlikely(__ret_warn_on);                                        \
+})
+#endif
+
 #else /* !CONFIG_BUG */
 #ifndef HAVE_ARCH_BUG
 #define BUG()
@@ -63,6 +77,14 @@ struct bug_entry {
        unlikely(__ret_warn_on);                                        \
 })
 #endif
+
+#ifndef WARN
+#define WARN(condition, format...) ({                                  \
+       int __ret_warn_on = !!(condition);                              \
+       unlikely(__ret_warn_on);                                        \
+})
+#endif
+
 #endif
 
 #define WARN_ON_ONCE(condition)        ({                              \
@@ -75,6 +97,19 @@ struct bug_entry {
        unlikely(__ret_warn_once);                              \
 })
 
+#define WARN_ONCE(condition, format...)        ({                      \
+       static int __warned;                                    \
+       int __ret_warn_once = !!(condition);                    \
+                                                               \
+       if (unlikely(__ret_warn_once))                          \
+               if (WARN(!__warned, format))                    \
+                       __warned = 1;                           \
+       unlikely(__ret_warn_once);                              \
+})
+
+#define WARN_ON_RATELIMIT(condition, state)                    \
+               WARN_ON((condition) && __ratelimit(state))
+
 #ifdef CONFIG_SMP
 # define WARN_ON_SMP(x)                        WARN_ON(x)
 #else