bfin-4845/trace.i.5

   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 int test_bit(int nr, const void *addr)
  10 {
  11         return __test_bit(nr, addr);
  12 };
  13 typedef struct cpumask {
  14         unsigned long
  15             bits[(((1) + (8 * sizeof(long)) - 1) / (8 * sizeof(long)))];
  16 } cpumask_t;
  17 struct trace_array_cpu {
  18         int disabled;
  19 };
  20 struct trace_array {
  21         struct trace_array_cpu *data[1];
  22 };
  23 cpumask_t tracing_buffer_mask;
  24 struct trace_array global_trace;
  25 cpumask_t tracing_cpumask;
  26 cpumask_t tracing_cpumask_new;
  27 tracing_cpumask_write()
  28 {
  29         int cpu;
  30         for ((cpu) = 0; (cpu) < 1; (cpu)++) {
  31                 if (test_bit((cpu), (tracing_cpumask).bits)
  32                     && !test_bit((cpu), (tracing_cpumask_new).bits)) {
  33                         atomic_inc(&global_trace.data[cpu]->disabled);
  34                 }
  35                 if (!test_bit((cpu), (tracing_cpumask).bits)
  36                     && test_bit((cpu), (tracing_cpumask_new).bits)) {
  37                         atomic_dec(&global_trace.data[cpu]->disabled);
  38                 }
  39         }
  40 }