#include <features.h>
#ifndef __GLIBC__
+#ifndef BTRFS_DISABLE_BACKTRACE
#define BTRFS_DISABLE_BACKTRACE
+#endif
#define __always_inline __inline __attribute__ ((__always_inline__))
#endif
#define gfp_t int
#define get_cpu_var(p) (p)
#define __get_cpu_var(p) (p)
-#define BITS_PER_LONG (__SIZEOF_LONG__ * 8)
+#define BITS_PER_BYTE 8
+#define BITS_PER_LONG (__SIZEOF_LONG__ * BITS_PER_BYTE)
#define __GFP_BITS_SHIFT 20
#define __GFP_BITS_MASK ((int)((1 << __GFP_BITS_SHIFT) - 1))
#define GFP_KERNEL 0
#define ULONG_MAX (~0UL)
#endif
+#define __token_glue(a,b,c) ___token_glue(a,b,c)
+#define ___token_glue(a,b,c) a ## b ## c
+#ifdef DEBUG_BUILD_CHECKS
+#define BUILD_ASSERT(x) extern int __token_glue(compile_time_assert_,__LINE__,__COUNTER__)[1-2*!(x)] __attribute__((unused))
+#else
+#define BUILD_ASSERT(x)
+#endif
+
#ifndef BTRFS_DISABLE_BACKTRACE
#define MAX_BACKTRACE 16
static inline void print_trace(void)
{
void *array[MAX_BACKTRACE];
- size_t size;
+ int size;
size = backtrace(array, MAX_BACKTRACE);
backtrace_symbols_fd(array, size, 2);
if (val)
return;
if (assertion)
- fprintf(stderr, "%s:%d: %s: Assertion `%s` failed.\n",
- filename, line, func, assertion);
+ fprintf(stderr, "%s:%d: %s: Assertion `%s` failed, value %d\n",
+ filename, line, func, assertion, val);
else
- fprintf(stderr, "%s:%d: %s: Assertion failed.\n", filename,
- line, func);
+ fprintf(stderr, "%s:%d: %s: Assertion failed, value %d.\n",
+ filename, line, func, val);
print_trace();
+ abort();
exit(1);
}
#define BUG() assert(0)
#endif
+static inline void warning_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, int val,
+ int trace)
+{
+ if (val)
+ return;
+ if (assertion)
+ fprintf(stderr,
+ "%s:%d: %s: Warning: assertion `%s` failed, value %d\n",
+ filename, line, func, assertion, val);
+ else
+ fprintf(stderr,
+ "%s:%d: %s: Warning: assertion failed, value %d.\n",
+ filename, line, func, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
+ if (trace)
+ print_trace();
+#endif
+}
+
+
#ifdef __CHECKER__
#define __force __attribute__((force))
#define __bitwise__ __attribute__((bitwise))
}
/*
- * max/min macro
- */
-#define min(x,y) ({ \
- typeof(x) _x = (x); \
- typeof(y) _y = (y); \
- (void) (&_x == &_y); \
- _x < _y ? _x : _y; })
-
-#define max(x,y) ({ \
- typeof(x) _x = (x); \
- typeof(y) _y = (y); \
- (void) (&_x == &_y); \
- _x > _y ? _x : _y; })
-
-#define min_t(type,x,y) \
- ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
-#define max_t(type,x,y) \
- ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
-
-/*
* This looks more complex than it should be. But we need to
* get the type for the ~ right in round_down (it needs to be
* as wide as the result!), and we want to evaluate the macro
#ifndef BTRFS_DISABLE_BACKTRACE
#define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, !(c))
+#define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, !(c), 1)
#else
#define BUG_ON(c) assert(!(c))
+#define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, !(c), 0)
#endif
-#define WARN_ON(c) BUG_ON(c)
-
#ifndef BTRFS_DISABLE_BACKTRACE
#define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c))
#else
#define __bitwise
#endif
+/* Alignment check */
+#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
+
+static inline int is_power_of_2(unsigned long n)
+{
+ return (n != 0 && ((n & (n - 1)) == 0));
+}
+
typedef u16 __bitwise __le16;
typedef u16 __bitwise __be16;
typedef u32 __bitwise __le32;
struct __una_u64 { __le64 x; } __attribute__((__packed__));
#define get_unaligned_le8(p) (*((u8 *)(p)))
+#define get_unaligned_8(p) (*((u8 *)(p)))
#define put_unaligned_le8(val,p) ((*((u8 *)(p))) = (val))
+#define put_unaligned_8(val,p) ((*((u8 *)(p))) = (val))
#define get_unaligned_le16(p) le16_to_cpu(((const struct __una_u16 *)(p))->x)
+#define get_unaligned_16(p) (((const struct __una_u16 *)(p))->x)
#define put_unaligned_le16(val,p) (((struct __una_u16 *)(p))->x = cpu_to_le16(val))
+#define put_unaligned_16(val,p) (((struct __una_u16 *)(p))->x = (val))
#define get_unaligned_le32(p) le32_to_cpu(((const struct __una_u32 *)(p))->x)
+#define get_unaligned_32(p) (((const struct __una_u32 *)(p))->x)
#define put_unaligned_le32(val,p) (((struct __una_u32 *)(p))->x = cpu_to_le32(val))
+#define put_unaligned_32(val,p) (((struct __una_u32 *)(p))->x = (val))
#define get_unaligned_le64(p) le64_to_cpu(((const struct __una_u64 *)(p))->x)
+#define get_unaligned_64(p) (((const struct __una_u64 *)(p))->x)
#define put_unaligned_le64(val,p) (((struct __una_u64 *)(p))->x = cpu_to_le64(val))
+#define put_unaligned_64(val,p) (((struct __una_u64 *)(p))->x = (val))
#ifndef true
#define true 1