ACPI, x86: Fix extended error log driver to depend on CONFIG_X86_LOCAL_APIC

[deliverable/linux.git] / drivers / acpi / Kconfig

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 5ea5c32609ac84c0bc6f926e28e05fe3b81a1ce6..e11faae81ed9b9a0be91d0d8830f06df516ad6df 100644 (file)
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -123,9 +123,9 @@ config ACPI_BUTTON
        default y
        help
          This driver handles events on the power, sleep, and lid buttons.
-         A daemon reads /proc/acpi/event and perform user-defined actions
-         such as shutting down the system.  This is necessary for
-         software-controlled poweroff.
+         A daemon reads events from input devices or via netlink and
+         performs user-defined actions such as shutting down the system.
+         This is necessary for software-controlled poweroff.
 
          To compile this driver as a module, choose M here:
          the module will be called button.
@@ -372,4 +372,25 @@ config ACPI_BGRT
 
 source "drivers/acpi/apei/Kconfig"
 
+config ACPI_EXTLOG
+       tristate "Extended Error Log support"
+       depends on X86_MCE && X86_LOCAL_APIC
+       select EFI
+       select UEFI_CPER
+       default n
+       help
+         Certain usages such as Predictive Failure Analysis (PFA) require
+         more information about the error than what can be described in
+         processor machine check banks. Most server processors log
+         additional information about the error in processor uncore
+         registers. Since the addresses and layout of these registers vary
+         widely from one processor to another, system software cannot
+         readily make use of them. To complicate matters further, some of
+         the additional error information cannot be constructed without
+         detailed knowledge about platform topology.
+
+         Enhanced MCA Logging allows firmware to provide additional error
+         information to system software, synchronous with MCE or CMCI. This
+         driver adds support for that functionality.
+
 endif  # ACPI