ANDROID: trace: cpufreq: Add tracing for min/max cpufreq
Change-Id: I73f6ec437c1f805437d9376abb6510d1364b07ec
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
diff --git a/Documentation/trace/events-power.txt b/Documentation/trace/events-power.txt
index 21d514c..4d817d5 100644
--- a/Documentation/trace/events-power.txt
+++ b/Documentation/trace/events-power.txt
@@ -25,6 +25,7 @@
cpu_idle "state=%lu cpu_id=%lu"
cpu_frequency "state=%lu cpu_id=%lu"
+cpu_frequency_limits "min=%lu max=%lu cpu_id=%lu"
A suspend event is used to indicate the system going in and out of the
suspend mode:
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6e6c1fb..c910111 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2194,6 +2194,7 @@
policy->min = new_policy->min;
policy->max = new_policy->max;
+ trace_cpu_frequency_limits(policy->max, policy->min, policy->cpu);
policy->cached_target_freq = UINT_MAX;
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
index 54e3aad..3d54520 100644
--- a/include/trace/events/power.h
+++ b/include/trace/events/power.h
@@ -147,6 +147,31 @@
TP_ARGS(frequency, cpu_id)
);
+TRACE_EVENT(cpu_frequency_limits,
+
+ TP_PROTO(unsigned int max_freq, unsigned int min_freq,
+ unsigned int cpu_id),
+
+ TP_ARGS(max_freq, min_freq, cpu_id),
+
+ TP_STRUCT__entry(
+ __field( u32, min_freq )
+ __field( u32, max_freq )
+ __field( u32, cpu_id )
+ ),
+
+ TP_fast_assign(
+ __entry->min_freq = min_freq;
+ __entry->max_freq = min_freq;
+ __entry->cpu_id = cpu_id;
+ ),
+
+ TP_printk("min=%lu max=%lu cpu_id=%lu",
+ (unsigned long)__entry->min_freq,
+ (unsigned long)__entry->max_freq,
+ (unsigned long)__entry->cpu_id)
+);
+
TRACE_EVENT(device_pm_callback_start,
TP_PROTO(struct device *dev, const char *pm_ops, int event),