From: Paul E. McKenney Date: Fri, 3 Apr 2020 21:12:07 +0000 (-0700) Subject: rcu: Remove self-stack-trace when all quiescent states seen X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=33b2b93bd831fc0e994654cef3d046c713e3b55e;p=linux.git rcu: Remove self-stack-trace when all quiescent states seen When all quiescent states have been seen, it is normally the grace-period kthread that is in trouble. Although the existing stack trace from the current CPU might possibly provide useful information, experience indicates that there is too much noise for this to be worthwhile. This commit therefore removes this stack trace from the output. Signed-off-by: Paul E. McKenney --- diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h index 4da41a613ece4..535762b075436 100644 --- a/kernel/rcu/tree_stall.h +++ b/kernel/rcu/tree_stall.h @@ -440,8 +440,6 @@ static void print_other_cpu_stall(unsigned long gp_seq) rcu_state.name, j - gpa, j, gpa, READ_ONCE(jiffies_till_next_fqs), rcu_get_root()->qsmask); - /* In this case, the current CPU might be at fault. */ - sched_show_task(current); } } /* Rewrite if needed in case of slow consoles. */