bfin-4845/trace.i.3

   1 typedef unsigned long size_t;
   2 typedef long ssize_t;
   3 typedef long long loff_t;
   4 int __test_bit(int nr, const void *addr)
   5 {
   6         int *a = (int *)addr;
   7         int mask;
   8         a += nr >> 5;
   9         mask = 1 << (nr & 0x1f);
  10         return ((mask & *a) != 0);
  11 }
  12 int test_bit(int nr, const void *addr)
  13 {
  14         return __test_bit(nr, addr);
  15 };
  16 typedef struct {
  17 } atomic_t;
  18 typedef struct cpumask {
  19         unsigned long
  20             bits[(((1) + (8 * sizeof(long)) - 1) / (8 * sizeof(long)))];
  21 } cpumask_t;
  22 struct trace_array_cpu {
  23         atomic_t disabled;
  24 };
  25 struct trace_array {
  26         struct trace_array_cpu *data[1];
  27 };
  28 cpumask_t tracing_buffer_mask;
  29 struct trace_array global_trace;
  30 cpumask_t tracing_cpumask;
  31 cpumask_t tracing_cpumask_new;
  32 tracing_cpumask_write(struct file *filp, const char *ubuf, size_t count,
  33                               loff_t * ppos)
  34 {
  35         int err;
  36         int cpu;
  37         for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)tracing_buffer_mask) {
  38                 if (test_bit((cpu), (tracing_cpumask).bits)
  39                     && !test_bit((cpu), (tracing_cpumask_new).bits)) {
  40                         atomic_inc(&global_trace.data[cpu]->disabled);
  41                 }
  42                 if (!test_bit((cpu), (tracing_cpumask).bits)
  43                     && test_bit((cpu), (tracing_cpumask_new).bits)) {
  44                         atomic_dec(&global_trace.data[cpu]->disabled);
  45                 }
  46         }
  47 }