[v2,4/4] nmi_backtrace: generate one-line reports for idle cpus

Commit Message

Peter Zijlstra March 21, 2016, 4:48 p.m. UTC

The below annotates the two most used idle functions on x86

Patch

--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -152,7 +152,7 @@  int acpi_processor_ffh_cstate_probe(unsi
 }
 EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
 
-void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
+__cpuidle void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
 {
 	unsigned int cpu = smp_processor_id();
 	struct cstate_entry *percpu_entry;
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -725,7 +725,7 @@  static struct cpuidle_state avn_cstates[
  *
  * Must be called under local_irq_disable().
  */
-static int intel_idle(struct cpuidle_device *dev,
+__cpuidle static int intel_idle(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index)
 {
 	unsigned long ecx = 1; /* break on interrupt flag */