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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-04-23 15:52:53 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 12:33:20 -0700 |
| commit | f885b7f2b2de70be266d2cecc476f773a1e2ca5d (patch) | |
| tree | c4f4d03ca1469f22701b848274034a74c5ae2b04 /kernel/rcutree_trace.c | |
| parent | cba6d0d64ee53772b285d0c0c288deefbeaf7775 (diff) | |
| download | op-kernel-dev-f885b7f2b2de70be266d2cecc476f773a1e2ca5d.zip op-kernel-dev-f885b7f2b2de70be266d2cecc476f773a1e2ca5d.tar.gz | |
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 <efault@gmx.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutree_trace.c')
| -rw-r--r-- | kernel/rcutree_trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c index d4bc16d..a3556a2 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; |
