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Commit 8994515c authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Update rcu_report_qs_rsp() comment 



The header comment for rcu_report_qs_rsp() was obsolete, dating well
before the advent of RCU grace-period kthreads.  This commit therefore
brings this comment back into alignment with current reality.

Reported-by: default avatarLihao Liang <lihao.liang@cs.ox.ac.uk>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent bb53e416

kernel/rcu/tree.c

+7 −5
Original line number Diff line number Diff line
@@ -2234,11 +2234,13 @@ static bool rcu_start_gp(struct rcu_state *rsp) 
}



/*

 * Report a full set of quiescent states to the specified rcu_state

 * data structure.  This involves cleaning up after the prior grace

 * period and letting rcu_start_gp() start up the next grace period

 * if one is needed.  Note that the caller must hold rnp->lock, which

 * is released before return.

 * Report a full set of quiescent states to the specified rcu_state data

 * structure.  Invoke rcu_gp_kthread_wake() to awaken the grace-period

 * kthread if another grace period is required.  Whether we wake

 * the grace-period kthread or it awakens itself for the next round

 * of quiescent-state forcing, that kthread will clean up after the

 * just-completed grace period.  Note that the caller must hold rnp->lock,

 * which is released before return.

 */

static void rcu_report_qs_rsp(struct rcu_state *rsp, unsigned long flags)

	__releases(rcu_get_root(rsp)->lock)