9 /* FIXME: libkcompat must not define arch-specific local ops, as ust *must*
10 * fallback to the normal atomic ops. Fix things so we don't add them and
11 * break things accidentally.
14 #define container_of(ptr, type, member) ({ \
15 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
16 (type *)( (char *)__mptr - offsetof(type,member) );})
19 #define KERN_NOTICE ""
23 #define KERN_WARNING ""
25 #define WARN_ON_ONCE(msg) WARN_ON(msg)
29 #define MAX_ERRNO 4095
31 #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
33 static inline void *ERR_PTR(long error
)
35 return (void *) error
;
38 static inline long PTR_ERR(const void *ptr
)
43 static inline long IS_ERR(const void *ptr
)
45 return IS_ERR_VALUE((unsigned long)ptr
);
51 #define min_t(type, x, y) ({ \
54 __min1 < __min2 ? __min1: __min2; })
56 #define max_t(type, x, y) ({ \
59 __max1 > __max2 ? __max1: __max2; })
66 #define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER;
67 #define DECLARE_MUTEX(m) extern pthread_mutex_t (m);
69 #define mutex_lock(m) pthread_mutex_lock(m)
71 #define mutex_unlock(m) pthread_mutex_unlock(m)
76 #define zmalloc(s) calloc(1, s)
80 #define ____cacheline_aligned
84 static inline unsigned int hweight32(unsigned int w
)
86 unsigned int res
= w
- ((w
>> 1) & 0x55555555);
87 res
= (res
& 0x33333333) + ((res
>> 2) & 0x33333333);
88 res
= (res
+ (res
>> 4)) & 0x0F0F0F0F;
89 res
= res
+ (res
>> 8);
90 return (res
+ (res
>> 16)) & 0x000000FF;
93 static inline int fls(int x
)
96 //ust// #ifdef CONFIG_X86_CMOV
99 : "=&r" (r
) : "rm" (x
), "rm" (-1));
101 //ust// asm("bsrl %1,%0\n\t"
103 //ust// "movl $-1,%0\n"
104 //ust// "1:" : "=r" (r) : "rm" (x));
109 static __inline__
int get_count_order(unsigned int count
)
113 order
= fls(count
) - 1;
114 if (count
& (count
- 1))
124 #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
125 #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
126 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
127 #define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
128 #define PAGE_MASK (~(PAGE_SIZE-1))
135 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
139 /* There are two types of clocks that can be used.
141 - gettimeofday() clock
143 Microbenchmarks on Linux 2.6.30 on Core2 Duo 3GHz (functions are inlined):
144 Calls (100000000) to tsc(): 4004035641 cycles or 40 cycles/call
145 Calls (100000000) to gettimeofday(): 9723158352 cycles or 97 cycles/call
147 For merging traces with the kernel, a time source compatible with that of
148 the kernel is necessary.
153 /* WARNING: Make sure to set frequency and scaling functions that will not
154 * result in lttv timestamps (sec.nsec) with seconds greater than 2**32-1.
156 static inline u64
trace_clock_read64(void)
161 __asm__
volatile ("rdtsc\n" : "=a" (low
), "=d" (high
));
169 static inline u64
trace_clock_read64(void)
174 gettimeofday(&tv
, NULL
);
177 retval
+= tv
.tv_usec
;
182 static inline u64
trace_clock_frequency(void)
187 static inline u32
trace_clock_freq_scale(void)
195 #define __get_cpu_var(x) x
197 #endif /* KERNELCOMPAT_H */
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