From f885b7f2b2de70be266d2cecc476f773a1e2ca5d Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 23 Apr 2012 15:52:53 -0700 Subject: rcu: Control RCU_FANOUT_LEAF from boot-time parameter Although making RCU_FANOUT_LEAF a kernel configuration parameter rather than a fixed constant makes it easier for people to decrease cache-miss overhead for large systems, it is of little help for people who must run a single pre-built kernel binary. This commit therefore allows the value of RCU_FANOUT_LEAF to be increased (but not decreased!) via a boot-time parameter named rcutree.rcu_fanout_leaf. Reported-by: Mike Galbraith Signed-off-by: Paul E. McKenney --- kernel/rcutree_trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/rcutree_trace.c') diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c index d4bc16ddd1d4..a3556a2d842c 100644 --- a/kernel/rcutree_trace.c +++ b/kernel/rcutree_trace.c @@ -278,7 +278,7 @@ static void print_one_rcu_state(struct seq_file *m, struct rcu_state *rsp) rsp->n_force_qs, rsp->n_force_qs_ngp, rsp->n_force_qs - rsp->n_force_qs_ngp, rsp->n_force_qs_lh, rsp->qlen_lazy, rsp->qlen); - for (rnp = &rsp->node[0]; rnp - &rsp->node[0] < NUM_RCU_NODES; rnp++) { + for (rnp = &rsp->node[0]; rnp - &rsp->node[0] < rcu_num_nodes; rnp++) { if (rnp->level != level) { seq_puts(m, "\n"); level = rnp->level; -- cgit v1.2.3-59-g8ed1b