linux-kernel - [PATCH net-next 6/9] sctp: Move the percpu sockets counter out of sctp_proc

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Message-ID: <87393zq2rb.fsf_-_@xmission.com>
Date:	Mon, 06 Aug 2012 11:44:24 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	David Miller <davem@...emloft.net>
Cc:	Vlad Yasevich <vyasevich@...il.com>, linux-sctp@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jan Ariyasu <jan.ariyasu@...com>,
	Jan Ariyasu <jan.ariyasu@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	Thomas Graf <tgraf@...radead.org>, Xi Wang <xi.wang@...il.com>
Subject: [PATCH net-next 6/9] sctp: Move the percpu sockets counter out of sctp_proc_init


The percpu sctp socket counter has nothing at all to do with the sctp
proc files, and having it in the wrong initialization is confusing,
and makes network namespace support a pain.

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 net/sctp/protocol.c |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 6193d20..976d765 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -93,8 +93,6 @@ int sysctl_sctp_wmem[3];
 /* Set up the proc fs entry for the SCTP protocol. */
 static __init int sctp_proc_init(void)
 {
-	if (percpu_counter_init(&sctp_sockets_allocated, 0))
-		goto out_nomem;
 #ifdef CONFIG_PROC_FS
 	if (!proc_net_sctp) {
 		proc_net_sctp = proc_mkdir("sctp", init_net.proc_net);
@@ -125,12 +123,9 @@ out_snmp_proc_init:
 		remove_proc_entry("sctp", init_net.proc_net);
 	}
 out_free_percpu:
-	percpu_counter_destroy(&sctp_sockets_allocated);
 #else
 	return 0;
 #endif /* CONFIG_PROC_FS */
-
-out_nomem:
 	return -ENOMEM;
 }
 
@@ -151,7 +146,6 @@ static void sctp_proc_exit(void)
 		remove_proc_entry("sctp", init_net.proc_net);
 	}
 #endif
-	percpu_counter_destroy(&sctp_sockets_allocated);
 }
 
 /* Private helper to extract ipv4 address and stash them in
@@ -1261,6 +1255,10 @@ SCTP_STATIC __init int sctp_init(void)
 	if (status)
 		goto err_init_mibs;
 
+	status = percpu_counter_init(&sctp_sockets_allocated, 0);
+	if (status)
+		goto err_percpu_counter_init;
+
 	/* Initialize proc fs directory.  */
 	status = sctp_proc_init();
 	if (status)
@@ -1481,6 +1479,8 @@ err_ahash_alloc:
 	sctp_dbg_objcnt_exit();
 	sctp_proc_exit();
 err_init_proc:
+	percpu_counter_destroy(&sctp_sockets_allocated);
+err_percpu_counter_init:
 	cleanup_sctp_mibs();
 err_init_mibs:
 	kmem_cache_destroy(sctp_chunk_cachep);
@@ -1521,6 +1521,7 @@ SCTP_STATIC __exit void sctp_exit(void)
 			     sizeof(struct sctp_bind_hashbucket)));
 
 	sctp_dbg_objcnt_exit();
+	percpu_counter_destroy(&sctp_sockets_allocated);
 	sctp_proc_exit();
 	cleanup_sctp_mibs();
 
-- 
1.7.5.4

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