debug warnings: eliminate warn_on_slowpath()

[deliverable/linux.git] / include / asm-generic / bug.h

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index a3f738cffdb61a0057ffb8a1cd9a012e30b72f24..b8ba6941f587c7d12ac850f621826efd00107c35 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
@@ -33,15 +33,14 @@ struct bug_entry {
 
 #ifndef __WARN
 #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)
+#define __WARN()               warn_slowpath(__FILE__, __LINE__, NULL)
+#define __WARN_printf(arg...)  warn_slowpath(__FILE__, __LINE__, arg)
 #else
-#define __WARN_printf(arg...) __WARN()
+#define __WARN_printf(arg...)  do { printk(arg); __WARN(); } while (0)
 #endif
 
 #ifndef WARN_ON
@@ -97,6 +96,16 @@ extern void warn_slowpath(const char *file, const int line,
        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))