From: laijs@cn.fujitsu.com (Lai Jiangshan)
Subject: [ltt-dev] [PATCH 03/10] use get_cpu_call_rcu_data() for get_call_rcu_data()
Date: Thu, 15 Sep 2011 13:38:58 +0800 [thread overview]
Message-ID: <2e8c002c93f9f0105fef603f48c13aa8c2b6d807.1316064655.git.laijs@cn.fujitsu.com> (raw)
In-Reply-To: <cover.1316064655.git.laijs@cn.fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs at cn.fujitsu.com>
---
urcu-call-rcu-impl.h | 19 +++++++------------
1 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
index e0a8fd8..1fbce98 100644
--- a/urcu-call-rcu-impl.h
+++ b/urcu-call-rcu-impl.h
@@ -435,22 +435,17 @@ struct call_rcu_data *get_default_call_rcu_data(void)
*/
struct call_rcu_data *get_call_rcu_data(void)
{
- int curcpu;
- static int warned = 0;
+ struct call_rcu_data *crd;
if (thread_call_rcu_data != NULL)
return thread_call_rcu_data;
- if (maxcpus <= 0)
- return get_default_call_rcu_data();
- curcpu = sched_getcpu();
- if (!warned && (curcpu < 0 || maxcpus <= curcpu)) {
- fprintf(stderr, "[error] liburcu: gcrd CPU # out of range\n");
- warned = 1;
+
+ if (maxcpus > 0) {
+ crd = get_cpu_call_rcu_data(sched_getcpu());
+ if (crd)
+ return crd;
}
- if (curcpu >= 0 && maxcpus > curcpu &&
- per_cpu_call_rcu_data != NULL &&
- per_cpu_call_rcu_data[curcpu] != NULL)
- return per_cpu_call_rcu_data[curcpu];
+
return get_default_call_rcu_data();
}
--
1.7.4.4
next prev parent reply other threads:[~2011-09-15 5:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-15 5:38 [ltt-dev] [PATCH 00/10] urcu,call_rcu: minior fixes, round1 Lai Jiangshan
2011-09-15 5:38 ` [ltt-dev] [PATCH 01/10] add missing static Lai Jiangshan
2011-09-15 14:54 ` Mathieu Desnoyers
2011-09-15 5:38 ` [ltt-dev] [PATCH 02/10] init maxcpus before use it Lai Jiangshan
2011-09-15 14:59 ` Mathieu Desnoyers
2011-09-15 5:38 ` Lai Jiangshan [this message]
2011-09-15 15:08 ` [ltt-dev] [PATCH 03/10] use get_cpu_call_rcu_data() for get_call_rcu_data() Mathieu Desnoyers
2011-09-15 5:38 ` [ltt-dev] [PATCH 04/10] use cds_list_for_each_entry_safe() Lai Jiangshan
2011-09-15 15:11 ` Mathieu Desnoyers
2011-09-15 5:39 ` [ltt-dev] [PATCH 05/10] avoid memory leak in call_rcu_data_free() Lai Jiangshan
2011-09-15 15:14 ` Mathieu Desnoyers
2011-09-15 5:39 ` [ltt-dev] [PATCH 06/10] wake up default call_rcu thread after we move the leftover callbacks Lai Jiangshan
2011-09-15 15:16 ` Mathieu Desnoyers
2011-09-15 5:39 ` [ltt-dev] [PATCH 07/10] protect writing to per_cpu_call_rcu_data[*] Lai Jiangshan
2011-09-15 15:17 ` Mathieu Desnoyers
2011-09-15 5:39 ` [ltt-dev] [PATCH 08/10] Return -EEXIST when the old cpu call_rcu_data has not been removed Lai Jiangshan
2011-09-15 15:19 ` Mathieu Desnoyers
2011-09-15 5:39 ` [ltt-dev] [PATCH 09/10] avoid leaking crdp for failed path Lai Jiangshan
2011-09-15 15:21 ` Mathieu Desnoyers
2011-09-15 15:23 ` [ltt-dev] [PATCH 00/10] urcu,call_rcu: minior fixes, round1 Mathieu Desnoyers
2011-09-15 15:57 ` Paul E. McKenney
2011-09-16 3:33 ` Lai Jiangshan
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