diff options
Diffstat (limited to 'arch/x86/oprofile')
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index 9f001d90459..24582040b71 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -95,7 +95,10 @@ static void nmi_cpu_save_registers(struct op_msrs *msrs) static void nmi_cpu_start(void *dummy) { struct op_msrs const *msrs = &__get_cpu_var(cpu_msrs); - model->start(msrs); + if (!msrs->controls) + WARN_ON_ONCE(1); + else + model->start(msrs); } static int nmi_start(void) @@ -107,7 +110,10 @@ static int nmi_start(void) static void nmi_cpu_stop(void *dummy) { struct op_msrs const *msrs = &__get_cpu_var(cpu_msrs); - model->stop(msrs); + if (!msrs->controls) + WARN_ON_ONCE(1); + else + model->stop(msrs); } static void nmi_stop(void) |