Cleanup non-arch xtime uses, use get_seconds() or current_kernel_time().

This avoids use of the kernel-internal "xtime" variable directly outside
of the actual time-related functions.  Instead, use the helper functions
that we already have available to us.

This doesn't actually change any behaviour, but this will allow us to
fix the fact that "xtime" isn't updated very often with CONFIG_NO_HZ
(because much of the realtime information is maintained as separate
offsets to 'xtime'), which has caused interfaces that use xtime directly
to get a time that is out of sync with the real-time clock by up to a
third of a second or so.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 6 insertions, 6 deletions

diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 16a68df4e36b..c58fa0d1be26 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -787,7 +787,7 @@ static int __init af_rxrpc_init(void)
 
         BUILD_BUG_ON(sizeof(struct rxrpc_skb_priv) > sizeof(dummy_skb->cb));
 
-        rxrpc_epoch = htonl(xtime.tv_sec);
+        rxrpc_epoch = htonl(get_seconds());
 
         ret = -ENOMEM;
         rxrpc_call_jar = kmem_cache_create(
diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c
index 482750efc235..372b24466dc7 100644
--- a/net/rxrpc/ar-connection.c
+++ b/net/rxrpc/ar-connection.c
@@ -791,7 +791,7 @@ void rxrpc_put_connection(struct rxrpc_connection *conn)
 
         ASSERTCMP(atomic_read(&conn->usage), >, 0);
 
-        conn->put_time = xtime.tv_sec;
+        conn->put_time = get_seconds();
         if (atomic_dec_and_test(&conn->usage)) {
                 _debug("zombie");
                 rxrpc_queue_delayed_work(&rxrpc_connection_reap, 0);
@@ -835,7 +835,7 @@ void rxrpc_connection_reaper(struct work_struct *work)
 
         _enter("");
 
-        now = xtime.tv_sec;
+        now = get_seconds();
         earliest = ULONG_MAX;
 
         write_lock_bh(&rxrpc_connection_lock);
diff --git a/net/rxrpc/ar-transport.c b/net/rxrpc/ar-transport.c
index d43d78f19302..bb282a6a19f0 100644
--- a/net/rxrpc/ar-transport.c
+++ b/net/rxrpc/ar-transport.c
@@ -183,7 +183,7 @@ void rxrpc_put_transport(struct rxrpc_transport *trans)
 
         ASSERTCMP(atomic_read(&trans->usage), >, 0);
 
-        trans->put_time = xtime.tv_sec;
+        trans->put_time = get_seconds();
         if (unlikely(atomic_dec_and_test(&trans->usage)))
                 _debug("zombie");
                 /* let the reaper determine the timeout to avoid a race with
@@ -219,7 +219,7 @@ static void rxrpc_transport_reaper(struct work_struct *work)
 
         _enter("");
 
-        now = xtime.tv_sec;
+        now = get_seconds();
         earliest = ULONG_MAX;
 
         /* extract all the transports that have been dead too long */
diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
index 5ec705144e10..ac3cabdca78c 100644
--- a/net/rxrpc/rxkad.c
+++ b/net/rxrpc/rxkad.c
@@ -916,7 +916,7 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn,
                 issue = be32_to_cpu(stamp);
         }
         p += 4;
-        now = xtime.tv_sec;
+        now = get_seconds();
         _debug("KIV ISSUE: %lx [%lx]", issue, now);
 
         /* check the ticket is in date */