diff options
Diffstat (limited to 'arch/x86/oprofile')
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 37 |
1 files changed, 23 insertions, 14 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index f0fb44725d80..da6d2ab31c6c 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -264,6 +264,16 @@ static inline void mux_init(struct oprofile_operations *ops) ops->switch_events = nmi_switch_event; } +static void mux_clone(int cpu) +{ + if (!has_mux()) + return; + + memcpy(per_cpu(cpu_msrs, cpu).multiplex, + per_cpu(cpu_msrs, 0).multiplex, + sizeof(struct op_msr) * model->num_virt_counters); +} + #else inline int op_x86_phys_to_virt(int phys) { return phys; } @@ -272,6 +282,7 @@ static inline int nmi_setup_mux(void) { return 1; } static inline void nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) { } static inline void mux_init(struct oprofile_operations *ops) { } +static void mux_clone(int cpu) { } #endif @@ -350,20 +361,18 @@ static int nmi_setup(void) /* Assume saved/restored counters are the same on all CPUs */ model->fill_in_addresses(&per_cpu(cpu_msrs, 0)); for_each_possible_cpu(cpu) { - if (cpu != 0) { - memcpy(per_cpu(cpu_msrs, cpu).counters, - per_cpu(cpu_msrs, 0).counters, - sizeof(struct op_msr) * model->num_counters); - - memcpy(per_cpu(cpu_msrs, cpu).controls, - per_cpu(cpu_msrs, 0).controls, - sizeof(struct op_msr) * model->num_controls); -#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX - memcpy(per_cpu(cpu_msrs, cpu).multiplex, - per_cpu(cpu_msrs, 0).multiplex, - sizeof(struct op_msr) * model->num_virt_counters); -#endif - } + if (!cpu) + continue; + + memcpy(per_cpu(cpu_msrs, cpu).counters, + per_cpu(cpu_msrs, 0).counters, + sizeof(struct op_msr) * model->num_counters); + + memcpy(per_cpu(cpu_msrs, cpu).controls, + per_cpu(cpu_msrs, 0).controls, + sizeof(struct op_msr) * model->num_controls); + + mux_clone(cpu); } on_each_cpu(nmi_cpu_setup, NULL, 1); nmi_enabled = 1; |