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Commit 8e9118fc authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "kernel: rcu: Panic on RCU stall"

parents a5227762 8e647236

kernel/rcu/Kconfig.debug

+11 −0
Original line number Diff line number Diff line
@@ -57,6 +57,17 @@ config RCU_CPU_STALL_TIMEOUT 
	  RCU grace period persists, additional CPU stall warnings are

	  printed at more widely spaced intervals.



config RCU_PANIC_ON_STALL

	int "Panic on RCU Stalls"

	range 0 1

	default 0

	depends on RCU_STALL_COMMON

	help

	  Panic if a given RCU grace period extends more than the specified

	  number of seconds instead of just printing a CPU stall warning.

	  This helps to collect cpu context as part of ramdumps for post

	  mortem analysis.



config RCU_TRACE

	bool "Enable tracing for RCU"

	depends on DEBUG_KERNEL

kernel/rcu/tree_stall.h

+1 −1
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ 
// Controlling CPU stall warnings, including delay calculation.



/* panic() on RCU Stall sysctl. */

int sysctl_panic_on_rcu_stall __read_mostly;

int sysctl_panic_on_rcu_stall __read_mostly = CONFIG_RCU_PANIC_ON_STALL;



#ifdef CONFIG_PROVE_RCU

#define RCU_STALL_DELAY_DELTA	       (5 * HZ)