ACPI: cpufreq: Print _PPC changes via cpufreq debug layer
enabled with CPU_FREQ_DEBUG
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index f32010b..b477a4b 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -50,6 +50,10 @@
static DEFINE_MUTEX(performance_mutex);
+/* Use cpufreq debug layer for _PPC changes. */
+#define cpufreq_printk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, \
+ "cpufreq-core", msg)
+
/*
* _PPC support is implemented as a CPUfreq policy notifier:
* This means each time a CPUfreq driver registered also with
@@ -131,6 +135,9 @@
return -ENODEV;
}
+ cpufreq_printk("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
+ (int)ppc, ppc ? "" : "not");
+
pr->performance_platform_limit = (int)ppc;
return 0;
