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 ""
27 #define MAX_ERRNO 4095
29 #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
31 static inline void *ERR_PTR(long error
)
33 return (void *) error
;
36 static inline long PTR_ERR(const void *ptr
)
41 static inline long IS_ERR(const void *ptr
)
43 return IS_ERR_VALUE((unsigned long)ptr
);
49 #define min_t(type, x, y) ({ \
52 __min1 < __min2 ? __min1: __min2; })
54 #define max_t(type, x, y) ({ \
57 __max1 > __max2 ? __max1: __max2; })
64 #define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER;
65 #define DECLARE_MUTEX(m) extern pthread_mutex_t (m);
67 #define mutex_lock(m) pthread_mutex_lock(m)
69 #define mutex_unlock(m) pthread_mutex_unlock(m)
76 #define kmalloc(s, t) malloc(s)
77 #define kzalloc(s, t) zmalloc(s)
78 #define kfree(p) free((void *)p)
79 #define kstrdup(s, t) strdup(s)
81 #define zmalloc(s) calloc(1, s)
87 #define ____cacheline_aligned
91 static inline unsigned int hweight32(unsigned int w
)
93 unsigned int res
= w
- ((w
>> 1) & 0x55555555);
94 res
= (res
& 0x33333333) + ((res
>> 2) & 0x33333333);
95 res
= (res
+ (res
>> 4)) & 0x0F0F0F0F;
96 res
= res
+ (res
>> 8);
97 return (res
+ (res
>> 16)) & 0x000000FF;
100 static inline int fls(int x
)
103 //ust// #ifdef CONFIG_X86_CMOV
106 : "=&r" (r
) : "rm" (x
), "rm" (-1));
108 //ust// asm("bsrl %1,%0\n\t"
110 //ust// "movl $-1,%0\n"
111 //ust// "1:" : "=r" (r) : "rm" (x));
116 static __inline__
int get_count_order(unsigned int count
)
120 order
= fls(count
) - 1;
121 if (count
& (count
- 1))
131 #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
132 #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
133 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
134 #define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
135 #define PAGE_MASK (~(PAGE_SIZE-1))
142 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
146 /* There are two types of clocks that can be used.
148 - gettimeofday() clock
150 Microbenchmarks on Linux 2.6.30 on Core2 Duo 3GHz (functions are inlined):
151 Calls (100000000) to tsc(): 4004035641 cycles or 40 cycles/call
152 Calls (100000000) to gettimeofday(): 9723158352 cycles or 97 cycles/call
154 For merging traces with the kernel, a time source compatible with that of
155 the kernel is necessary.
160 /* WARNING: Make sure to set frequency and scaling functions that will not
161 * result in lttv timestamps (sec.nsec) with seconds greater than 2**32-1.
163 static inline u64
trace_clock_read64(void)
168 __asm__
volatile ("rdtsc\n" : "=a" (low
), "=d" (high
));
176 static inline u64
trace_clock_read64(void)
181 gettimeofday(&tv
, NULL
);
184 retval
+= tv
.tv_usec
;
189 static inline u64
trace_clock_frequency(void)
194 static inline u32
trace_clock_freq_scale(void)
200 #endif /* KERNELCOMPAT_H */
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