patch-2.4.20 linux-2.4.20/include/linux/sunrpc/timer.h

• Lines: 42
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/linux/sunrpc/timer.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/linux/sunrpc/timer.h linux-2.4.20/include/linux/sunrpc/timer.h
@@ -0,0 +1,41 @@
+/*
+ *  linux/include/linux/sunrpc/timer.h
+ *
+ *  Declarations for the RPC transport timer.
+ *
+ *  Copyright (C) 2002 Trond Myklebust <trond.myklebust@fys.uio.no>
+ */
+
+#ifndef _LINUX_SUNRPC_TIMER_H
+#define _LINUX_SUNRPC_TIMER_H
+
+#include <asm/atomic.h>
+
+struct rpc_rtt {
+	long timeo;		/* default timeout value */
+	long srtt[5];		/* smoothed round trip time << 3 */
+	long sdrtt[5];		/* soothed medium deviation of RTT */
+	atomic_t  ntimeouts;	/* Global count of the number of timeouts */
+};
+
+
+extern void rpc_init_rtt(struct rpc_rtt *rt, long timeo);
+extern void rpc_update_rtt(struct rpc_rtt *rt, int timer, long m);
+extern long rpc_calc_rto(struct rpc_rtt *rt, int timer);
+
+static inline void rpc_inc_timeo(struct rpc_rtt *rt)
+{
+	atomic_inc(&rt->ntimeouts);
+}
+
+static inline void rpc_clear_timeo(struct rpc_rtt *rt)
+{
+	atomic_set(&rt->ntimeouts, 0);
+}
+
+static inline int rpc_ntimeo(struct rpc_rtt *rt)
+{
+	return atomic_read(&rt->ntimeouts);
+}
+
+#endif /* _LINUX_SUNRPC_TIMER_H */