Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / nfs / iostat.h

diff --git a/kernel/fs/nfs/iostat.h b/kernel/fs/nfs/iostat.h
new file mode 100644 (file)
index 0000000..0cb806f
--- /dev/null
+++ b/kernel/fs/nfs/iostat.h
@@ -0,0 +1,76 @@
+/*
+ *  linux/fs/nfs/iostat.h
+ *
+ *  Declarations for NFS client per-mount statistics
+ *
+ *  Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com>
+ *
+ */
+
+#ifndef _NFS_IOSTAT
+#define _NFS_IOSTAT
+
+#include <linux/percpu.h>
+#include <linux/cache.h>
+#include <linux/nfs_iostat.h>
+
+struct nfs_iostats {
+       unsigned long long      bytes[__NFSIOS_BYTESMAX];
+#ifdef CONFIG_NFS_FSCACHE
+       unsigned long long      fscache[__NFSIOS_FSCACHEMAX];
+#endif
+       unsigned long           events[__NFSIOS_COUNTSMAX];
+} ____cacheline_aligned;
+
+static inline void nfs_inc_server_stats(const struct nfs_server *server,
+                                       enum nfs_stat_eventcounters stat)
+{
+       this_cpu_inc(server->io_stats->events[stat]);
+}
+
+static inline void nfs_inc_stats(const struct inode *inode,
+                                enum nfs_stat_eventcounters stat)
+{
+       nfs_inc_server_stats(NFS_SERVER(inode), stat);
+}
+
+static inline void nfs_add_server_stats(const struct nfs_server *server,
+                                       enum nfs_stat_bytecounters stat,
+                                       long addend)
+{
+       this_cpu_add(server->io_stats->bytes[stat], addend);
+}
+
+static inline void nfs_add_stats(const struct inode *inode,
+                                enum nfs_stat_bytecounters stat,
+                                long addend)
+{
+       nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
+}
+
+#ifdef CONFIG_NFS_FSCACHE
+static inline void nfs_add_fscache_stats(struct inode *inode,
+                                        enum nfs_stat_fscachecounters stat,
+                                        long addend)
+{
+       this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
+}
+static inline void nfs_inc_fscache_stats(struct inode *inode,
+                                        enum nfs_stat_fscachecounters stat)
+{
+       this_cpu_inc(NFS_SERVER(inode)->io_stats->fscache[stat]);
+}
+#endif
+
+static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
+{
+       return alloc_percpu(struct nfs_iostats);
+}
+
+static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
+{
+       if (stats != NULL)
+               free_percpu(stats);
+}
+
+#endif /* _NFS_IOSTAT */