The qlen variable is write-only, we can remove it easily.
Signed-off-by: Paolo Bonzini <[email protected]>
---
urcu-call-rcu-impl.h | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)
diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
index 7e6acdd..ca597d0 100644
--- a/urcu-call-rcu-impl.h
+++ b/urcu-call-rcu-impl.h
@@ -47,7 +47,6 @@ struct call_rcu_data {
struct cds_wfq_queue cbs;
unsigned long flags;
int futex;
- unsigned long qlen;
pthread_t tid;
int cpu_affinity;
struct cds_list_head list;
@@ -198,7 +197,6 @@ int set_thread_cpu_affinity(struct call_rcu_data *crdp)
static void *call_rcu_thread(void *arg)
{
- unsigned long cbcount;
struct cds_wfq_node *cbs;
struct cds_wfq_node **cbs_tail;
struct call_rcu_data *crdp = (struct call_rcu_data *)arg;
@@ -218,7 +216,6 @@ static void *call_rcu_thread(void *arg)
cbs_tail = (struct cds_wfq_node **)
uatomic_xchg(&crdp->cbs.tail, &crdp->cbs.head);
synchronize_rcu();
- cbcount = 0;
do {
while (cbs->next == NULL &&
&cbs->next != cbs_tail)
@@ -230,9 +227,7 @@ static void *call_rcu_thread(void *arg)
rhp = (struct rcu_head *)cbs;
cbs = cbs->next;
rhp->func(rhp);
- cbcount++;
} while (cbs != NULL);
- uatomic_sub(&crdp->qlen, cbcount);
}
if (uatomic_read(&crdp->flags) & URCU_CALL_RCU_STOP)
break;
@@ -267,7 +262,6 @@ static void call_rcu_data_init(struct call_rcu_data **crdpp,
}
memset(crdp, '\0', sizeof(*crdp));
cds_wfq_init(&crdp->cbs);
- crdp->qlen = 0;
crdp->futex = 0;
crdp->flags = flags;
cds_list_add(&crdp->list, &call_rcu_data_list);
@@ -519,7 +513,6 @@ void call_rcu(struct rcu_head *head,
head->func = func;
crdp = get_call_rcu_data();
cds_wfq_enqueue(&crdp->cbs, &head->next);
- uatomic_inc(&crdp->qlen);
wake_call_rcu_thread(crdp);
}
@@ -565,8 +558,6 @@ void call_rcu_data_free(struct call_rcu_data *crdp)
cbs_endprev = (struct cds_wfq_node **)
uatomic_xchg(&default_call_rcu_data, cbs_tail);
*cbs_endprev = cbs;
- uatomic_add(&default_call_rcu_data->qlen,
- uatomic_read(&crdp->qlen));
cds_list_del(&crdp->list);
free(crdp);
}
--
1.7.4.4
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