Merge branch 'pm-cpufreq'

* pm-cpufreq: intel_pstate: Add support for Baytrail turbo P states intel_pstate: Use LFM bus ratio as min ratio/P state cpufreq: powernow-k8: Initialize per-cpu data-structures properly cpufreq: remove sysfs link when a cpu != policy->cpu, is removed
mariux64 · Feb 21, 2014 · fee5ae9 · fee5ae9
2 parents d8ad344 + 61d8d2a
commit fee5ae9
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Showing 3 changed files with 21 additions and 9 deletions.
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
@@ -1323,8 +1323,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
 	up_read(&policy->rwsem);
 
 	if (cpu != policy->cpu) {
-		if (!frozen)
-			sysfs_remove_link(&dev->kobj, "cpufreq");
+		sysfs_remove_link(&dev->kobj, "cpufreq");
 	} else if (cpus > 1) {
 		new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu);
 		if (new_cpu >= 0) {

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
@@ -34,8 +34,10 @@
 
 #define SAMPLE_COUNT		3
 
-#define BYT_RATIOS	0x66a
-#define BYT_VIDS        0x66b
+#define BYT_RATIOS		0x66a
+#define BYT_VIDS		0x66b
+#define BYT_TURBO_RATIOS	0x66c
+
 
 #define FRAC_BITS 8
 #define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
@@ -357,7 +359,7 @@ static int byt_get_min_pstate(void)
 {
 	u64 value;
 	rdmsrl(BYT_RATIOS, value);
-	return value & 0xFF;
+	return (value >> 8) & 0xFF;
 }
 
 static int byt_get_max_pstate(void)
@@ -367,6 +369,13 @@ static int byt_get_max_pstate(void)
 	return (value >> 16) & 0xFF;
 }
 
+static int byt_get_turbo_pstate(void)
+{
+	u64 value;
+	rdmsrl(BYT_TURBO_RATIOS, value);
+	return value & 0x3F;
+}
+
 static void byt_set_pstate(struct cpudata *cpudata, int pstate)
 {
 	u64 val;
@@ -469,7 +478,7 @@ static struct cpu_defaults byt_params = {
 	.funcs = {
 		.get_max = byt_get_max_pstate,
 		.get_min = byt_get_min_pstate,
-		.get_turbo = byt_get_max_pstate,
+		.get_turbo = byt_get_turbo_pstate,
 		.set = byt_set_pstate,
 		.get_vid = byt_get_vid,
 	},

diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
@@ -1076,7 +1076,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
 {
 	struct powernow_k8_data *data;
 	struct init_on_cpu init_on_cpu;
-	int rc;
+	int rc, cpu;
 
 	smp_call_function_single(pol->cpu, check_supported_cpu, &rc, 1);
 	if (rc)
@@ -1140,7 +1140,9 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
 	pr_debug("cpu_init done, current fid 0x%x, vid 0x%x\n",
 		 data->currfid, data->currvid);
 
-	per_cpu(powernow_data, pol->cpu) = data;
+	/* Point all the CPUs in this policy to the same data */
+	for_each_cpu(cpu, pol->cpus)
+		per_cpu(powernow_data, cpu) = data;
 
 	return 0;
 
@@ -1155,6 +1157,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
 static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
 {
 	struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
+	int cpu;
 
 	if (!data)
 		return -EINVAL;
@@ -1165,7 +1168,8 @@ static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
 
 	kfree(data->powernow_table);
 	kfree(data);
-	per_cpu(powernow_data, pol->cpu) = NULL;
+	for_each_cpu(cpu, pol->cpus)
+		per_cpu(powernow_data, cpu) = NULL;
 
 	return 0;
 }