diff options
| author | Thomas Renninger <trenn@suse.de> | 2009-02-04 01:17:45 +0100 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2009-02-24 22:47:31 -0500 |
| commit | 57f4fa699195b761cbea90db5e38b4bc15610c7c (patch) | |
| tree | 875a995aa02e9d171a7fd384ac6813b2cc4f805f /arch/x86/kernel/cpu/cpufreq/powernow-k8.c | |
| parent | ed12978453a3845c947695e7ad32bb3ede444813 (diff) | |
[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.c')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/powernow-k8.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c index 4dd7e3bdee23..acc06b03194e 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c @@ -38,11 +38,9 @@ #include <asm/msr.h> -#ifdef CONFIG_X86_POWERNOW_K8_ACPI #include <linux/acpi.h> #include <linux/mutex.h> #include <acpi/processor.h> -#endif #define PFX "powernow-k8: " #define VERSION "version 2.20.00" @@ -800,7 +798,6 @@ static int find_psb_table(struct powernow_k8_data *data) return -ENODEV; } -#ifdef CONFIG_X86_POWERNOW_K8_ACPI static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index) { @@ -1030,23 +1027,6 @@ static int get_transition_latency(struct powernow_k8_data *data) return 1000 * max_latency; } -#else -static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) -{ - return -ENODEV; -} -static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data) -{ - return; -} -static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, - unsigned int index) -{ - return; -} -static int get_transition_latency(struct powernow_k8_data *data) { return 0; } -#endif /* CONFIG_X86_POWERNOW_K8_ACPI */ - /* Take a frequency, and issue the fid/vid transition command */ static int transition_frequency_fidvid(struct powernow_k8_data *data, unsigned int index) @@ -1260,19 +1240,11 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol) * an UP version, and is deprecated by AMD. */ if (num_online_cpus() != 1) { -#ifndef CONFIG_ACPI_PROCESSOR - printk(KERN_ERR PFX - "ACPI Processor support is required for " - "SMP systems but is absent. Please load the " - "ACPI Processor module before starting this " - "driver.\n"); -#else printk(KERN_ERR FW_BUG PFX "Your BIOS does not provide" " ACPI _PSS objects in a way that Linux " "understands. Please report this to the Linux " "ACPI maintainers and complain to your BIOS " "vendor.\n"); -#endif kfree(data); return -ENODEV; } |