raw_cpu_read_4
#define raw_cpu_read_long(pcp) raw_cpu_read_4(pcp)
return unlikely(raw_cpu_read_4(__preempt_count) == preempt_offset);
return raw_cpu_read_4(__preempt_count) & ~PREEMPT_NEED_RESCHED;
old = raw_cpu_read_4(__preempt_count);
return !(raw_cpu_read_4(__preempt_count) & PREEMPT_NEED_RESCHED);
#ifndef raw_cpu_read_4