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Commit 15c4e160 authored by Stepan Moskovchenko's avatar Stepan Moskovchenko
Browse files

EDAC: arm64: Add option to panic on correctable errors 



Allow the Cortex A53/A57 EDAC driver to be configured to
panic the kernel if a correctable error (CE) is detected.

Change-Id: Id7bf66ed36a348eb321d8fd457efe097c003ebcd
Signed-off-by: default avatarStepan Moskovchenko <stepanm@codeaurora.org>
parent 85814213

drivers/edac/Kconfig

+13 −1
Original line number Diff line number Diff line
@@ -377,6 +377,18 @@ config EDAC_CORTEX_ARM64 
	   stability and overall system health, you should probably say 'Y'

	   here.



config EDAC_CORTEX_ARM64_PANIC_ON_CE

	depends on EDAC_CORTEX_ARM64

	bool "Panic on correctable errors"

	help

	   Forcibly cause a kernel panic if an correctable error (CE) is

	   detected, even though the error is (by definition) correctable and

	   would otherwise result in no adverse system effects. This can reduce

	   debugging times on hardware which may be operating at voltages or

	   frequencies outside normal specification.



	   For production builds, you should definitely say 'N' here.



config EDAC_CORTEX_ARM64_PANIC_ON_UE

	depends on EDAC_CORTEX_ARM64

	bool "Panic on uncorrectable errors"
@@ -385,6 +397,6 @@ config EDAC_CORTEX_ARM64_PANIC_ON_UE 
	   detected. This can reduce debugging times on hardware which may be

	   operating at voltages or frequencies outside normal specification.



	   For production builds, you should should probably say 'N' here.

	   For production builds, you should probably say 'N' here.



endif # EDAC

drivers/edac/cortex_arm64_edac.c

+7 −0
Original line number Diff line number Diff line
@@ -81,6 +81,12 @@ 
#define ARM64_ERP_PANIC_ON_UE 0

#endif



#ifdef CONFIG_EDAC_CORTEX_ARM64_PANIC_ON_CE

#define ARM64_ERP_PANIC_ON_CE 1

#else

#define ARM64_ERP_PANIC_ON_CE 0

#endif



#define EDAC_CPU	"arm64"



struct erp_drvdata {
@@ -548,6 +554,7 @@ static int arm64_cpu_erp_probe(struct platform_device *pdev) 
	if (rc)

		goto out_mem;



	drv->edev_ctl->panic_on_ce = ARM64_ERP_PANIC_ON_CE;

	drv->edev_ctl->panic_on_ue = ARM64_ERP_PANIC_ON_UE;



	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cci");