release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-realview/include/mach/smp.h

   1 #ifndef ASMARM_ARCH_SMP_H
   2 #define ASMARM_ARCH_SMP_H
   3
   4
   5 #include <asm/hardware/gic.h>
   6
   7 #define hard_smp_processor_id()                 \
   8         ({                                              \
   9                 unsigned int cpunum;                    \
  10                 __asm__("mrc p15, 0, %0, c0, c0, 5"     \
  11                         : "=r" (cpunum));               \
  12                 cpunum &= 0x0F;                         \
  13         })
  14
  15 /*
  16  * We use IRQ1 as the IPI
  17  */
  18 static inline void smp_cross_call(const struct cpumask *mask)
  19 {
  20         gic_raise_softirq(mask, 1);
  21 }
  22
  23 #endif