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rcu: Panic after fixed number of stalls

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Some stalls are transient, so that system fully recovers.  This commit
therefore allows users to configure the number of stalls that must happen
in order to trigger kernel panic.

Signed-off-by: chao <chao@eero.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
chao 2020-08-30 23:41:17 -07:00 • committed by Paul E. McKenney
parent 29368e0939
commit dfe564045c
3 changed files with 18 additions and 0 deletions
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include/linux/kernel.h
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@ -536,6 +536,7 @@ extern int panic_on_warn;
extern unsigned long panic_on_taint;
extern bool panic_on_taint_nousertaint;
extern int sysctl_panic_on_rcu_stall;
extern int sysctl_max_rcu_stall_to_panic;
extern int sysctl_panic_on_stackoverflow;
extern bool crash_kexec_post_notifiers;