bfin-4845/trace.i.6

   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 typedef struct cpumask {
  10         unsigned long bits[1];
  11 } cpumask_t;
  12 struct trace_array_cpu {
  13         int disabled;
  14 };
  15 struct trace_array {
  16         struct trace_array_cpu *data[1];
  17 };
  18 cpumask_t tracing_buffer_mask;
  19 struct trace_array global_trace;
  20 cpumask_t tracing_cpumask;
  21 cpumask_t tracing_cpumask_new;
  22 tracing_cpumask_write()
  23 {
  24         int cpu;
  25         for (cpu = 0; cpu < 1; cpu++) {
  26                 if (test_bit(cpu, tracing_cpumask.bits))
  27                         atomic_inc(&global_trace.data[cpu]->disabled);
  28                 if (!test_bit(cpu, tracing_cpumask.bits))
  29                         atomic_dec(&global_trace.data[cpu]->disabled);
  30         }
  31 }