Blackfin: implement nmi_watchdog for SMP on BF561

[sfrench/cifs-2.6.git] / arch / blackfin / Kconfig.debug

diff --git a/arch/blackfin/Kconfig.debug b/arch/blackfin/Kconfig.debug
index 87f195ee2e06234e50399566b25243e8ca821bda..1460d7b5edc15d2dfffd61c5ab4c07abcf3ce2c2 100644 (file)
--- a/arch/blackfin/Kconfig.debug
+++ b/arch/blackfin/Kconfig.debug
@@ -238,6 +238,15 @@ config EARLY_PRINTK
          all of this lives in the init section and is thrown away after the
          kernel boots completely.
 
+config NMI_WATCHDOG
+       bool "Enable NMI watchdog to help debugging lockup on SMP"
+       default n
+       depends on (SMP && !BFIN_SCRATCH_REG_RETN)
+       help
+         If any CPU in the system does not execute the period local timer
+         interrupt for more than 5 seconds, then the NMI handler dumps debug
+         information. This information can be used to debug the lockup.
+
 config CPLB_INFO
        bool "Display the CPLB information"
        help