[CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()
Add a cpu parameter to __cpufreq_driver_getavg(). This is needed for software
cpufreq coordination where policy->cpu may not be same as the CPU on which we
want to getavg frequency.
A follow-on patch will use this parameter to getavg freq from all cpus
in policy->cpus.
Change since last patch. Fix the offline/online and suspend/resume
oops reported by Youquan Song <youquan.song@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 1def5b0..c24c4a4 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -256,7 +256,8 @@
* Only IA32_APERF/IA32_MPERF ratio is architecturally defined and
* no meaning should be associated with absolute values of these MSRs.
*/
-static unsigned int get_measured_perf(unsigned int cpu)
+static unsigned int get_measured_perf(struct cpufreq_policy *policy,
+ unsigned int cpu)
{
union {
struct {
@@ -326,7 +327,7 @@
#endif
- retval = per_cpu(drv_data, cpu)->max_freq * perf_percent / 100;
+ retval = per_cpu(drv_data, policy->cpu)->max_freq * perf_percent / 100;
put_cpu();
set_cpus_allowed_ptr(current, &saved_mask);
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 9bbdc25..31d6f53 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1487,7 +1487,7 @@
}
EXPORT_SYMBOL_GPL(cpufreq_driver_target);
-int __cpufreq_driver_getavg(struct cpufreq_policy *policy)
+int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu)
{
int ret = 0;
@@ -1495,8 +1495,8 @@
if (!policy)
return -EINVAL;
- if (cpu_online(policy->cpu) && cpufreq_driver->getavg)
- ret = cpufreq_driver->getavg(policy->cpu);
+ if (cpu_online(cpu) && cpufreq_driver->getavg)
+ ret = cpufreq_driver->getavg(policy, cpu);
cpufreq_cpu_put(policy);
return ret;
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 67c9d4f..f56debd 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -415,7 +415,7 @@
if (load < (dbs_tuners_ins.up_threshold - 10)) {
unsigned int freq_next, freq_cur;
- freq_cur = __cpufreq_driver_getavg(policy);
+ freq_cur = __cpufreq_driver_getavg(policy, policy->cpu);
if (!freq_cur)
freq_cur = policy->cur;
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 6fd5668..1ee608f 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -187,7 +187,8 @@
unsigned int relation);
-extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy);
+extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy,
+ unsigned int cpu);
int cpufreq_register_governor(struct cpufreq_governor *governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
@@ -226,7 +227,9 @@
unsigned int (*get) (unsigned int cpu);
/* optional */
- unsigned int (*getavg) (unsigned int cpu);
+ unsigned int (*getavg) (struct cpufreq_policy *policy,
+ unsigned int cpu);
+
int (*exit) (struct cpufreq_policy *policy);
int (*suspend) (struct cpufreq_policy *policy, pm_message_t pmsg);
int (*resume) (struct cpufreq_policy *policy);