From c896054f75f9a720ecf2ab3e688f4da79a55fe05 Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Thu, 25 Oct 2012 17:59:23 -0700
Subject: [PATCH] rcu: Reduce default RCU CPU stall warning timeout

The RCU CPU stall warning timeout has defaulted to 60 seconds for
some years, with almost no false positives.  This commit therefore
reduces the default to 21 seconds, slightly shorter than the new
soft-lockup timeout.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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