From dd2460f3872f1b89839aedb21b999e802542c32b Mon Sep 17 00:00:00 2001 From: Juri Lelli Date: Thu, 30 Apr 2015 17:35:23 +0100 Subject: DEBUG: sched,cpufreq: add cpu_capacity change tracepoint This is useful when we want to compare cpu utilization and cpu curr capacity side by side. Signed-off-by: Juri Lelli --- drivers/cpufreq/cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 5ca8e9517aae..0f30d11fb528 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -29,6 +29,7 @@ #include #include #include +#include #include static LIST_HEAD(cpufreq_policy_list); @@ -473,6 +474,7 @@ static void cpufreq_notify_post_transition(struct cpufreq_policy *policy, void cpufreq_freq_transition_begin(struct cpufreq_policy *policy, struct cpufreq_freqs *freqs) { + int cpu; /* * Catch double invocations of _begin() which lead to self-deadlock. @@ -501,6 +503,8 @@ wait: spin_unlock(&policy->transition_lock); scale_freq_capacity(policy, freqs); + for_each_cpu(cpu, policy->cpus) + trace_cpu_capacity(capacity_curr_of(cpu), cpu); cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE); } -- cgit v1.2.3