target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch

   1 --- a/arch/mips/oprofile/op_model_mipsxx.c
   2 +++ b/arch/mips/oprofile/op_model_mipsxx.c
   3 @@ -298,6 +298,11 @@ static void reset_counters(void *arg)
   4         }
   5  }
   6
   7 +static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
   8 +{
   9 +       return mipsxx_perfcount_handler();
  10 +}
  11 +
  12  static int __init mipsxx_init(void)
  13  {
  14         int counters;
  15 @@ -374,6 +379,10 @@ static int __init mipsxx_init(void)
  16         save_perf_irq = perf_irq;
  17         perf_irq = mipsxx_perfcount_handler;
  18
  19 +       if (cp0_perfcount_irq >= 0)
  20 +               return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
  21 +                       IRQF_SHARED, "Perfcounter", save_perf_irq);
  22 +
  23         return 0;
  24  }
  25
  26 @@ -381,6 +390,9 @@ static void mipsxx_exit(void)
  27  {
  28         int counters = op_model_mipsxx_ops.num_counters;
  29
  30 +       if (cp0_perfcount_irq >= 0)
  31 +               free_irq(cp0_perfcount_irq, save_perf_irq);
  32 +
  33         counters = counters_per_cpu_to_total(counters);
  34         on_each_cpu(reset_counters, (void *)(long)counters, 1);
  35