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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-29 15:22:25 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-29 15:22:25 +0300
commit81be193b7e2089dc34a4e3939f1b057f53995f56 (patch)
tree7a185880d04a9865cfcff28fc569f9b0444ecb85
parent02da2d72174c61988eb4456b53f405e3ebdebce4 (diff)
parent1becf03545a0859ceaaf9e8c2d9861882a71cb01 (diff)
downloadlinux-81be193b7e2089dc34a4e3939f1b057f53995f56.tar.xz
Merge branch 'pm-cpufreq-fixes'
* pm-cpufreq-fixes: cpufreq: intel_pstate: Fix processing for turbo activation ratio Revert "cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC"
-rw-r--r--drivers/cpufreq/cpufreq_governor.c8
-rw-r--r--drivers/cpufreq/intel_pstate.c5
2 files changed, 7 insertions, 6 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 10a5cfeae8c5..5f1147fa9239 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -193,12 +193,8 @@ unsigned int dbs_update(struct cpufreq_policy *policy)
wall_time = cur_wall_time - j_cdbs->prev_cpu_wall;
j_cdbs->prev_cpu_wall = cur_wall_time;
- if (cur_idle_time <= j_cdbs->prev_cpu_idle) {
- idle_time = 0;
- } else {
- idle_time = cur_idle_time - j_cdbs->prev_cpu_idle;
- j_cdbs->prev_cpu_idle = cur_idle_time;
- }
+ idle_time = cur_idle_time - j_cdbs->prev_cpu_idle;
+ j_cdbs->prev_cpu_idle = cur_idle_time;
if (ignore_nice) {
u64 cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 30fe323c4551..f502d5b90c25 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -813,6 +813,11 @@ static int core_get_max_pstate(void)
if (err)
goto skip_tar;
+ /* For level 1 and 2, bits[23:16] contain the ratio */
+ if (tdp_ctrl)
+ tdp_ratio >>= 16;
+
+ tdp_ratio &= 0xff; /* ratios are only 8 bits long */
if (tdp_ratio - 1 == tar) {
max_pstate = tar;
pr_debug("max_pstate=TAC %x\n", max_pstate);