diff options
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c | 8 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c | 8 | ||||
| -rw-r--r-- | drivers/acpi/processor_perflib.c | 8 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 6 |
4 files changed, 22 insertions, 8 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c index 5fd65325b81..cf0ddc9ee0c 100644 --- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -418,8 +418,14 @@ acpi_cpufreq_cpu_init ( goto err_free; perf = data->acpi_data; - policy->cpus = perf->shared_cpu_map; policy->shared_type = perf->shared_type; + /* + * Will let policy->cpus know about dependency only when software + * coordination is required. + */ + if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL || + policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) + policy->cpus = perf->shared_cpu_map; if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS; diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c index f7e4356f682..8d765509ef5 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c @@ -399,8 +399,14 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy) dprintk(PFX "obtaining ACPI data failed\n"); return -EIO; } - policy->cpus = p->shared_cpu_map; policy->shared_type = p->shared_type; + /* + * Will let policy->cpus know about dependency only when software + * coordination is required. + */ + if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL || + policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) + policy->cpus = p->shared_cpu_map; /* verify the acpi_data */ if (p->state_count <= 1) { diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 8bd7500c612..5c24ac45717 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -691,12 +691,12 @@ int acpi_processor_preregister_performance( /* Validate the Domain info */ count_target = pdomain->num_processors; count = 1; - if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL || - pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL) { + if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL) pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ALL; - } else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY) { + else if (pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL) + pr->performance->shared_type = CPUFREQ_SHARED_TYPE_HW; + else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY) pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ANY; - } for_each_possible_cpu(j) { if (i == j) diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 466fbe9e489..35e137636b0 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -100,8 +100,10 @@ struct cpufreq_policy { #define CPUFREQ_INCOMPATIBLE (1) #define CPUFREQ_NOTIFY (2) -#define CPUFREQ_SHARED_TYPE_ALL (0) /* All dependent CPUs should set freq */ -#define CPUFREQ_SHARED_TYPE_ANY (1) /* Freq can be set from any dependent CPU */ +#define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ +#define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ +#define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ +#define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/ /******************** cpufreq transition notifiers *******************/ |