arch/arm/mach-vexpress/include/mach/smp.h

   1 #ifndef __MACH_SMP_H
   2 #define __MACH_SMP_H
   3
   4 #include <asm/hardware/gic.h>
   5
   6 #define hard_smp_processor_id()                         \
   7         ({                                              \
   8                 unsigned int cpunum;                    \
   9                 __asm__("mrc p15, 0, %0, c0, c0, 5"     \
  10                         : "=r" (cpunum));               \
  11                 cpunum &= 0x0F;                         \
  12         })
  13
  14 /*
  15  * We use IRQ1 as the IPI
  16  */
  17 static inline void smp_cross_call(const struct cpumask *mask)
  18 {
  19         gic_raise_softirq(mask, 1);
  20 }
  21 #endif