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cpufreq: Add warning message to powernow-k8

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cpufreq modules are often loaded from init scripts that assume that
all recent AMD systems will use powernow-k8.
To inform the user of the change of support and ease the transition
to acpi-cpufreq, emit a warning message.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Andre Przywara 2012-09-04 08:28:04 +00:00 committed by Rafael J. Wysocki
parent acd3162482
commit 034be8fd64
2 changed files with 5 additions and 1 deletions
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3
drivers/cpufreq/Kconfig.x86
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@ -96,7 +96,8 @@ config X86_POWERNOW_K8
select CPU_FREQ_TABLE
depends on ACPI && ACPI_PROCESSOR
help
This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors.
This adds the CPUFreq driver for K8/early Opteron/Athlon64 processors.
Support for K10 and newer processors is now in acpi-cpufreq.
To compile this driver as a module, choose M here: the
module will be called powernow-k8.

3
drivers/cpufreq/powernow-k8.c
View File

@ -1563,6 +1563,9 @@ static int __cpuinit powernowk8_init(void)
if (!x86_match_cpu(powernow_k8_ids))
return -ENODEV;
if (static_cpu_has(X86_FEATURE_HW_PSTATE))
pr_warn(PFX "support for this CPU is deprecated, use acpi-cpufreq instead.\n");
for_each_online_cpu(i) {
int rc;
smp_call_function_single(i, check_supported_cpu, &rc, 1);