1 files changed, 71 insertions, 0 deletions
diff --git a/sys/amd64/vmm/vmm_stat.h b/sys/amd64/vmm/vmm_stat.h
new file mode 100644
index 0000000..7c075a6
--- /dev/null
+++ b/sys/amd64/vmm/vmm_stat.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2011 NetApp, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _VMM_STAT_H_
+#define	_VMM_STAT_H_
+
+struct vm;
+
+#define	MAX_VMM_STAT_TYPES	64		/* arbitrary */
+
+struct vmm_stat_type {
+	const char	*desc;		/* description of statistic */
+	int	index;			/* position in the stats buffer */
+};
+
+void	vmm_stat_init(void *arg);
+
+#define	VMM_STAT_DEFINE(type, desc)					\
+	struct vmm_stat_type type[1] = {				\
+		{ desc, -1 }						\
+	};								\
+	SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_init, type)
+
+void	*vmm_stat_alloc(void);
+void 	vmm_stat_free(void *vp);
+
+/*
+ * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
+ */
+int	vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
+const char *vmm_stat_desc(int index);
+
+static void __inline
+vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
+{
+#ifdef	VMM_KEEP_STATS
+	uint64_t *stats = vcpu_stats(vm, vcpu);
+	if (vst->index >= 0)
+		stats[vst->index] += x;
+#endif
+}
+
+#endif