diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2006-06-26 00:34:43 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-06-26 00:34:43 -0400 |
| commit | 46f18e3a28295a9e11a6ffa4478241c19bc93735 (patch) | |
| tree | f563b12a18cadd6583925ce1dbc3bc79538ac866 /arch/i386/kernel/cpu | |
| parent | 3448097fccdce4ea8f0fcad4f37f502a8cd72e68 (diff) | |
ACPI: HW P-state coordination support
Treat HW coordination as independent CPUs.
This enables per-cpu monintoring of P-states
http://bugzilla.kernel.org/show_bug.cgi?id=5737
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/i386/kernel/cpu')
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c | 8 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c | 8 |
2 files changed, 14 insertions, 2 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) { |