x86/oprofile: moving arch_perfmon counter setup to op_x86_model_spec.init

The function arch_perfmon_init() in nmi_int.c is model specific. This
patch moves it to op_model_ppro.c by using the init function pointer
in struct op_x86_model_spec.

Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>

diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 3b285e6..dd85153 100644 (file)
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -427,7 +427,7 @@ static int __init ppro_init(char **cpu_type)
                *cpu_type = "i386/core_2";
                break;
        case 26:
-               arch_perfmon_setup_counters();
+               model = &op_arch_perfmon_spec;
                *cpu_type = "i386/core_i7";
                break;
        case 28:
@@ -442,16 +442,6 @@ static int __init ppro_init(char **cpu_type)
        return 1;
 }
 
-static int __init arch_perfmon_init(char **cpu_type)
-{
-       if (!cpu_has_arch_perfmon)
-               return 0;
-       *cpu_type = "i386/arch_perfmon";
-       model = &op_arch_perfmon_spec;
-       arch_perfmon_setup_counters();
-       return 1;
-}
-
 /* in order to get sysfs right */
 static int using_nmi;
 
@@ -509,8 +499,15 @@ int __init op_nmi_init(struct oprofile_operations *ops)
                        break;
                }
 
-               if (!cpu_type && !arch_perfmon_init(&cpu_type))
+               if (cpu_type)
+                       break;
+
+               if (!cpu_has_arch_perfmon)
                        return -ENODEV;
+
+               /* use arch perfmon as fallback */
+               cpu_type = "i386/arch_perfmon";
+               model = &op_arch_perfmon_spec;
                break;
 
        default:

diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
index 2a12399..ae58119 100644 (file)
--- a/arch/x86/oprofile/op_model_ppro.c
+++ b/arch/x86/oprofile/op_model_ppro.c
@@ -233,7 +233,7 @@ struct op_x86_model_spec const op_ppro_spec = {
  * the specific CPU.
  */
 
-void arch_perfmon_setup_counters(void)
+static void arch_perfmon_setup_counters(void)
 {
        union cpuid10_eax eax;
 
@@ -253,7 +253,14 @@ void arch_perfmon_setup_counters(void)
        op_arch_perfmon_spec.num_controls = num_counters;
 }
 
+static int arch_perfmon_init(struct oprofile_operations *ignore)
+{
+       arch_perfmon_setup_counters();
+       return 0;
+}
+
 struct op_x86_model_spec op_arch_perfmon_spec = {
+       .init                   = &arch_perfmon_init,
        /* num_counters/num_controls filled in at runtime */
        .fill_in_addresses      = &ppro_fill_in_addresses,
        /* user space does the cpuid check for available events */

diff --git a/arch/x86/oprofile/op_x86_model.h b/arch/x86/oprofile/op_x86_model.h
index 2317149..ed27783 100644 (file)
--- a/arch/x86/oprofile/op_x86_model.h
+++ b/arch/x86/oprofile/op_x86_model.h
@@ -51,6 +51,4 @@ extern struct op_x86_model_spec const op_p4_ht2_spec;
 extern struct op_x86_model_spec const op_amd_spec;
 extern struct op_x86_model_spec op_arch_perfmon_spec;
 
-extern void arch_perfmon_setup_counters(void);
-
 #endif /* OP_X86_MODEL_H */