bfin-4845/trace.i.7

   1 int test_bit(int nr, const void *addr)
   2 {
   3         int *a = (int *)addr;
   4         int mask;
   5         a += nr >> 5;
   6         mask = 1 << (nr & 0x1f);
   7         return ((mask & *a) != 0);
   8 }
   9 struct trace_array_cpu {
  10         int disabled;
  11 };
  12 struct {
  13         struct trace_array_cpu *data[1];
  14 } global_trace;
  15 struct {
  16         unsigned long bits[1];
  17 } tracing_cpumask;
  18 tracing_cpumask_write()
  19 {
  20         int cpu;
  21         for (cpu = 0; cpu < 1; cpu++) {
  22                 if (test_bit(cpu, tracing_cpumask.bits))
  23                         atomic_inc(&global_trace.data[cpu]->disabled);
  24                 if (!test_bit(cpu, tracing_cpumask.bits))
  25                         atomic_dec(&global_trace.data[cpu]->disabled);
  26         }
  27 }