__asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
return bitmask;
}
-#define ARCH_HAVE_FFZ
-
-typedef struct {
- unsigned int lock;
-} spinlock_t;
-static inline void spin_lock(spinlock_t *lock)
+static inline unsigned long long get_cpu_clock(void)
{
- short inc = 0x0100;
+ unsigned long ret;
- __asm__ __volatile__("xaddw %w0, %1\n"
- "1:\t"
- "cmpb %h0, %b0\n\t"
- "je 2f\n\t"
- "rep ; nop\n\t"
- "movb %1, %b0\n\t"
- "jmp 1b\n"
- "2:"
- : "+Q" (inc), "+m" (lock->lock)
- :
- : "memory", "cc");
+ __asm__ __volatile__("rdtsc" : "=A" (ret));
+ return ret;
}
-static inline void spin_unlock(spinlock_t *lock)
-{
- __asm__ __volatile__("incb %0"
- : "+m" (lock->lock)
- :
- : "memory", "cc");
-}
+#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_CPU_CLOCK
#endif