From: Arnd Bergmann <arnd@xxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
This is not needed for correctness, only as a small optimization.
---
drivers/acpi/processor_perflib.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 4265814c74f8..9a959a963a79 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -209,6 +209,7 @@ void acpi_processor_ppc_exit(struct cpufreq_policy *policy)
}
}
+#ifdef CONFIG_X86
static int acpi_processor_get_performance_control(struct acpi_processor *pr)
{
int result = 0;
@@ -267,7 +268,6 @@ 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 +298,6 @@ 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 +437,11 @@ 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 +783,4 @@ void acpi_processor_unregister_performance(unsigned int cpu)
mutex_unlock(&performance_mutex);
}
EXPORT_SYMBOL(acpi_processor_unregister_performance);
+#endif
--
2.39.5
