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#ifndef ASM_CYCLES_H
#define ASM_CYCLES_H
typedef unsigned long cycles_t;
#define CYCLES_FMT "lu"
/* system call wrapper */
int null_call(cycles_t *timestamp);
static inline cycles_t get_cycles(void)
{
cycles_t c;
/* On the ARM11 MPCore chips, userspace cannot access the cycle counter
* directly. So ask the kernel to read it instead. Eventually, this
* should support newer ARM chips that do allow accessing the cycle
* counter in userspace.
*/
null_call(&c);
return c;
}
#endif
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