[RFCv2 PATCH 16/23] sched, cpufreq: Current compute capacity hack for ARM TC2
From: Morten Rasmussen <hidden>
Date: 2014-07-03 16:33:40
Also in:
lkml
Subsystem:
cpu frequency scaling framework, the rest · Maintainers:
"Rafael J. Wysocki", Viresh Kumar, Linus Torvalds
Hack to report different cpu capacities for big and little cpus. This is for experimentation on ARM TC2 _only_. A proper solution has to address this problem. Signed-off-by: Morten Rasmussen <redacted> --- drivers/cpufreq/cpufreq.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a2b788d..efec777 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c@@ -316,7 +316,13 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy, pr_debug("FREQ: %lu - CPU: %lu\n", (unsigned long)freqs->new, (unsigned long)freqs->cpu); trace_cpu_frequency(freqs->new, freqs->cpu); - set_curr_capacity(freqs->cpu, (freqs->new*1024)/policy->max); + /* Massive TC2 hack */ + if (freqs->cpu == 0 || freqs->cpu == 1) + /* A15 cpus (max_capacity = 2015) */ + set_curr_capacity(freqs->cpu, (freqs->new*2015)/1200000); + else + /* A7 cpus (nax_capacity = 1024) */ + set_curr_capacity(freqs->cpu, (freqs->new*1024)/1000000); srcu_notifier_call_chain(&cpufreq_transition_notifier_list, CPUFREQ_POSTCHANGE, freqs); if (likely(policy) && likely(policy->cpu == freqs->cpu))
--
1.7.9.5