summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-21 20:57:46 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-21 20:57:46 +0200
commit395da1259ac3e3fdc70636a854c993ddb76c6169 (patch)
tree891feefd0ea79820a62a38c027802b02a8afdeaf /drivers
parentc3b46c73264b03000d1e18b22f5caf63332547c9 (diff)
parentc9d9c929e6741118776eb0f385339d3c2b84d5f8 (diff)
Merge branch 'pm-cpufreq-fixes'
* pm-cpufreq-fixes: cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended set intel_pstate: Avoid getting stuck in high P-states when idle
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpufreq/cpufreq.c3
-rw-r--r--drivers/cpufreq/intel_pstate.c4
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index b87596b591b3..e93405f0eac4 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1491,6 +1491,9 @@ static unsigned int cpufreq_update_current_freq(struct cpufreq_policy *policy)
{
unsigned int new_freq;
+ if (cpufreq_suspended)
+ return 0;
+
new_freq = cpufreq_driver->get(policy->cpu);
if (!new_freq)
return 0;
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 8b5a415ee14a..30fe323c4551 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1130,6 +1130,10 @@ static inline int32_t get_target_pstate_use_performance(struct cpudata *cpu)
sample_ratio = div_fp(int_tofp(pid_params.sample_rate_ns),
int_tofp(duration_ns));
core_busy = mul_fp(core_busy, sample_ratio);
+ } else {
+ sample_ratio = div_fp(100 * cpu->sample.mperf, cpu->sample.tsc);
+ if (sample_ratio < int_tofp(1))
+ core_busy = 0;
}
cpu->sample.busy_scaled = core_busy;