2a41de48b8
sparse now warns if one compares pointers with integers. However, there are false positives, like: fs/filesystems.c:72:2: warning: Using plain integer as NULL pointer Every time BUG_ON(ptr) is used, ptr is checked against integer zero. Avoid that and save ~70 false positives from allyesconfig run. mentioned by Al. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Josh Triplett <josh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
#ifndef _ASM_GENERIC_BUG_H
|
|
#define _ASM_GENERIC_BUG_H
|
|
|
|
#include <linux/compiler.h>
|
|
|
|
#ifdef CONFIG_BUG
|
|
|
|
#ifdef CONFIG_GENERIC_BUG
|
|
#ifndef __ASSEMBLY__
|
|
struct bug_entry {
|
|
unsigned long bug_addr;
|
|
#ifdef CONFIG_DEBUG_BUGVERBOSE
|
|
const char *file;
|
|
unsigned short line;
|
|
#endif
|
|
unsigned short flags;
|
|
};
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#define BUGFLAG_WARNING (1<<0)
|
|
#endif /* CONFIG_GENERIC_BUG */
|
|
|
|
#ifndef HAVE_ARCH_BUG
|
|
#define BUG() do { \
|
|
printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
|
|
panic("BUG!"); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_BUG_ON
|
|
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_WARN_ON
|
|
#define WARN_ON(condition) ({ \
|
|
typeof(condition) __ret_warn_on = (condition); \
|
|
if (unlikely(__ret_warn_on)) { \
|
|
printk("WARNING: at %s:%d %s()\n", __FILE__, \
|
|
__LINE__, __FUNCTION__); \
|
|
dump_stack(); \
|
|
} \
|
|
unlikely(__ret_warn_on); \
|
|
})
|
|
#endif
|
|
|
|
#else /* !CONFIG_BUG */
|
|
#ifndef HAVE_ARCH_BUG
|
|
#define BUG()
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_BUG_ON
|
|
#define BUG_ON(condition) do { if (condition) ; } while(0)
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_WARN_ON
|
|
#define WARN_ON(condition) ({ \
|
|
typeof(condition) __ret_warn_on = (condition); \
|
|
unlikely(__ret_warn_on); \
|
|
})
|
|
#endif
|
|
#endif
|
|
|
|
#define WARN_ON_ONCE(condition) ({ \
|
|
static int __warned; \
|
|
typeof(condition) __ret_warn_once = (condition); \
|
|
\
|
|
if (unlikely(__ret_warn_once)) \
|
|
if (WARN_ON(!__warned)) \
|
|
__warned = 1; \
|
|
unlikely(__ret_warn_once); \
|
|
})
|
|
|
|
#ifdef CONFIG_SMP
|
|
# define WARN_ON_SMP(x) WARN_ON(x)
|
|
#else
|
|
# define WARN_ON_SMP(x) do { } while (0)
|
|
#endif
|
|
|
|
#endif
|