summaryrefslogtreecommitdiffstats
path: root/kernel/rcuclassic.c
diff options
context:
space:
mode:
authorPaul Mackerras <paulus@samba.org>2009-04-22 13:02:09 +1000
committerPaul Mackerras <paulus@samba.org>2009-04-22 13:02:09 +1000
commit5bd3ef84d73c2ea7b4babbad060909753c4828d4 (patch)
treefdf2bafb48ae1ed03175f6c77a7548a181e69ee9 /kernel/rcuclassic.c
parent0658c16056660886ea2f35c4f038be70a94b1532 (diff)
parent6d25b688ecc488753af3c9e6f6a9a575b863cf37 (diff)
Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6 into merge
Diffstat (limited to 'kernel/rcuclassic.c')
-rw-r--r--kernel/rcuclassic.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index 654c640a6b9..0f2b0b31130 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -65,6 +65,7 @@ static struct rcu_ctrlblk rcu_ctrlblk = {
.lock = __SPIN_LOCK_UNLOCKED(&rcu_ctrlblk.lock),
.cpumask = CPU_BITS_NONE,
};
+
static struct rcu_ctrlblk rcu_bh_ctrlblk = {
.cur = -300,
.completed = -300,
@@ -73,8 +74,26 @@ static struct rcu_ctrlblk rcu_bh_ctrlblk = {
.cpumask = CPU_BITS_NONE,
};
-DEFINE_PER_CPU(struct rcu_data, rcu_data) = { 0L };
-DEFINE_PER_CPU(struct rcu_data, rcu_bh_data) = { 0L };
+static DEFINE_PER_CPU(struct rcu_data, rcu_data);
+static DEFINE_PER_CPU(struct rcu_data, rcu_bh_data);
+
+/*
+ * Increment the quiescent state counter.
+ * The counter is a bit degenerated: We do not need to know
+ * how many quiescent states passed, just if there was at least
+ * one since the start of the grace period. Thus just a flag.
+ */
+void rcu_qsctr_inc(int cpu)
+{
+ struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
+ rdp->passed_quiesc = 1;
+}
+
+void rcu_bh_qsctr_inc(int cpu)
+{
+ struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu);
+ rdp->passed_quiesc = 1;
+}
static int blimit = 10;
static int qhimark = 10000;