Commit a6dfbd6a authored May 02, 2017 by Satyajit Desai

soc: qcom: watchdog_v2: Add support to trigger watchdog bite on panic



In certain cases during a kernel panic, interrupts on non-panicking
CPUs are disabled. Since CPU context cannot be collected by sending IPIs
to those CPUs, it impacts debugging the problem. Forcing a watchdog bite
during kernel panic will ensure us getting the proper CPU context. Hence
adding support for the same.

Change-Id: I53b4029bac23d723f4eb07e53534ea526bcd245f
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>

parent 0b979a51

drivers/soc/qcom/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -655,3 +655,11 @@ config QTI_RPM_STATS_LOG
		memory location. These messages provide statistical information about
		the low power modes that RPM enters. The drivers outputs the message
		via a debugfs node.

		config QCOM_FORCE_WDOG_BITE_ON_PANIC
		bool "QCOM force watchdog bite"
		depends on QCOM_WATCHDOG_V2
		help
		This forces a watchdog bite when the device restarts due to a
		kernel panic. On certain MSM SoCs, this provides us
		additional debugging information.