target/linux/generic/patches-2.6.36/208-mips_oprofile_fix.patch

   1 --- a/arch/mips/Makefile
   2 +++ b/arch/mips/Makefile
   3 @@ -49,7 +49,9 @@ ifneq ($(SUBARCH),$(ARCH))
   4  endif
   5
   6  ifndef CONFIG_FUNCTION_TRACER
   7 -cflags-y := -ffunction-sections
   8 +  ifndef CONFIG_PROFILING
   9 +    cflags-y := -ffunction-sections
  10 +  endif
  11  endif
  12  ifdef CONFIG_FUNCTION_GRAPH_TRACER
  13    ifndef KBUILD_MCOUNT_RA_ADDRESS
  14 --- a/arch/mips/oprofile/op_model_mipsxx.c
  15 +++ b/arch/mips/oprofile/op_model_mipsxx.c
  16 @@ -298,6 +298,11 @@ static void reset_counters(void *arg)
  17         }
  18  }
  19
  20 +static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
  21 +{
  22 +       return mipsxx_perfcount_handler();
  23 +}
  24 +
  25  static int __init mipsxx_init(void)
  26  {
  27         int counters;
  28 @@ -374,6 +379,10 @@ static int __init mipsxx_init(void)
  29         save_perf_irq = perf_irq;
  30         perf_irq = mipsxx_perfcount_handler;
  31
  32 +       if (cp0_perfcount_irq >= 0)
  33 +               return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
  34 +                       IRQF_SHARED, "Perfcounter", save_perf_irq);
  35 +
  36         return 0;
  37  }
  38
  39 @@ -381,6 +390,9 @@ static void mipsxx_exit(void)
  40  {
  41         int counters = op_model_mipsxx_ops.num_counters;
  42
  43 +       if (cp0_perfcount_irq >= 0)
  44 +               free_irq(cp0_perfcount_irq, save_perf_irq);
  45 +
  46         counters = counters_per_cpu_to_total(counters);
  47         on_each_cpu(reset_counters, (void *)(long)counters, 1);
  48