x86/mce: Factor out and deprecate the /dev/mcelog driver
Move all code relating to /dev/mcelog to a separate source file.
/dev/mcelog driver can now operate from the machine check notifier with
lowest prio.
Signed-off-by: Tony Luck <tony.luck@intel.com>
[ Move the mce_helper and trigger functionality behind CONFIG_X86_MCELOG_LEGACY. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20170327093304.10683-6-bp@alien8.de
[ Renamed CONFIG_X86_MCELOG to CONFIG_X86_MCELOG_LEGACY. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cc98d5a..43e6bac 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1043,6 +1043,14 @@
The action the kernel takes depends on the severity of the problem,
ranging from warning messages to halting the machine.
+config X86_MCELOG_LEGACY
+ bool "Support for deprecated /dev/mcelog character device"
+ depends on X86_MCE
+ ---help---
+ Enable support for /dev/mcelog which is needed by the old mcelog
+ userspace logging daemon. Consider switching to the new generation
+ rasdaemon solution.
+
config X86_MCE_INTEL
def_bool y
prompt "Intel MCE features"
@@ -1072,7 +1080,7 @@
def_bool y
config X86_MCE_INJECT
- depends on X86_MCE && X86_LOCAL_APIC
+ depends on X86_MCE && X86_LOCAL_APIC && X86_MCELOG_LEGACY
tristate "Machine check injector support"
---help---
Provide support for injecting machine checks for testing purposes.
