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| author | Thomas Renninger | 2009-02-04 01:17:45 +0100 |
|---|---|---|
| committer | Dave Jones | 2009-02-25 04:47:31 +0100 |
| commit | 57f4fa699195b761cbea90db5e38b4bc15610c7c (patch) | |
| tree | 875a995aa02e9d171a7fd384ac6813b2cc4f805f /arch/x86/kernel/cpu/cpufreq/powernow-k8.h | |
| parent | [CPUFREQ] Introduce /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_transition_l... (diff) | |
| download | kernel-qcow2-linux-57f4fa699195b761cbea90db5e38b4bc15610c7c.tar.gz kernel-qcow2-linux-57f4fa699195b761cbea90db5e38b4bc15610c7c.tar.xz kernel-qcow2-linux-57f4fa699195b761cbea90db5e38b4bc15610c7c.zip | |
[CPUFREQ] powernow-k8: Always compile powernow-k8 driver with ACPI support
powernow-k8 driver should always try to get cpufreq info from ACPI.
Otherwise it will not be able to detect the transition latency correctly
which results in ondemand governor taking a wrong sampling rate which will
then result in sever performance loss.
Let the user not shoot himself in the foot and always compile in ACPI
support for powernow-k8.
This also fixes a wrong message if ACPI_PROCESSOR is compiled as a module and
#ifndef CONFIG_ACPI_PROCESSOR
path is chosen.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'arch/x86/kernel/cpu/cpufreq/powernow-k8.h')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/powernow-k8.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h index 8ecc75b6c7c3..6c6698feade1 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h @@ -45,11 +45,10 @@ struct powernow_k8_data { * frequency is in kHz */ struct cpufreq_frequency_table *powernow_table; -#ifdef CONFIG_X86_POWERNOW_K8_ACPI /* the acpi table needs to be kept. it's only available if ACPI was * used to determine valid frequency/vid/fid states */ struct acpi_processor_performance acpi_data; -#endif + /* we need to keep track of associated cores, but let cpufreq * handle hotplug events - so just point at cpufreq pol->cpus * structure */ @@ -222,10 +221,8 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid); static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index); -#ifdef CONFIG_X86_POWERNOW_K8_ACPI static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table); static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table); -#endif #ifdef CONFIG_SMP static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[]) |