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ACPI: processor_perflib: extend X86 dependency

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The majority of the processor_perflib code is only used by cpufreq
drivers on the x86 architecture and makes no sense without the
x86 SMI interactions that rely on I/O port access.

Replace the existing #ifdef checks with one that covers all of the
code that is only used by x86 drivers, saving a little bit
of kernel code size on other architectures.

There is likely more code under CONFIG_ACPI_PROCESSOR that falls
into this category, but changing those would require a larger
rework.

Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20241030123701.1538919-1-arnd@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Arnd Bergmann 2024-10-30 12:36:40 +00:00 committed by Rafael J. Wysocki
parent 59b723cd2a
commit bf41bb57b2
1 changed files with 5 additions and 8 deletions
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13
drivers/acpi/processor_perflib.c
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@ -24,8 +24,6 @@
#define ACPI_PROCESSOR_FILE_PERFORMANCE "performance"
static DEFINE_MUTEX(performance_mutex);
/*
* _PPC support is implemented as a CPUfreq policy notifier:
* This means each time a CPUfreq driver registered also with
@ -209,6 +207,10 @@ void acpi_processor_ppc_exit(struct cpufreq_policy *policy)
}
}
#ifdef CONFIG_X86
static DEFINE_MUTEX(performance_mutex);
static int acpi_processor_get_performance_control(struct acpi_processor *pr)
{
int result = 0;
@ -267,7 +269,6 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
return result;
}
#ifdef CONFIG_X86
/*
* Some AMDs have 50MHz frequency multiples, but only provide 100MHz rounding
* in their ACPI data. Calculate the real values and fix up the _PSS data.
@ -298,9 +299,6 @@ static void amd_fixup_frequency(struct acpi_processor_px *px, int i)
px->core_frequency = (100 * (fid + 8)) >> did;
}
}
#else
static void amd_fixup_frequency(struct acpi_processor_px *px, int i) {};
#endif
static int acpi_processor_get_performance_states(struct acpi_processor *pr)
{
@ -440,13 +438,11 @@ int acpi_processor_get_performance_info(struct acpi_processor *pr)
* the BIOS is older than the CPU and does not know its frequencies
*/
update_bios:
#ifdef CONFIG_X86
if (acpi_has_method(pr->handle, "_PPC")) {
if(boot_cpu_has(X86_FEATURE_EST))
pr_warn(FW_BUG "BIOS needs update for CPU "
"frequency support\n");
}
#endif
return result;
}
EXPORT_SYMBOL_GPL(acpi_processor_get_performance_info);
@ -788,3 +784,4 @@ void acpi_processor_unregister_performance(unsigned int cpu)
mutex_unlock(&performance_mutex);
}
EXPORT_SYMBOL(acpi_processor_unregister_performance);
#endif