1 files changed, 97 insertions, 0 deletions
diff --git a/sys/amd64/include/counter.h b/sys/amd64/include/counter.h
new file mode 100644
index 000000000000..b8b2a19233aa
--- /dev/null
+++ b/sys/amd64/include/counter.h
@@ -0,0 +1,97 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#ifdef __i386__
+#include <i386/counter.h>
+#else /* !__i386__ */
+
+#ifndef __MACHINE_COUNTER_H__
+#define __MACHINE_COUNTER_H__
+
+#include <sys/pcpu.h>
+#include <sys/kassert.h>
+
+#define	EARLY_COUNTER	(void *)__offsetof(struct pcpu, pc_early_dummy_counter)
+
+#define	counter_enter()	do {} while (0)
+#define	counter_exit()	do {} while (0)
+
+#ifdef IN_SUBR_COUNTER_C
+static inline uint64_t
+counter_u64_read_one(counter_u64_t c, int cpu)
+{
+
+	MPASS(c != EARLY_COUNTER);
+	return (*zpcpu_get_cpu(c, cpu));
+}
+
+static inline uint64_t
+counter_u64_fetch_inline(uint64_t *c)
+{
+	uint64_t r;
+	int cpu;
+
+	r = 0;
+	CPU_FOREACH(cpu)
+		r += counter_u64_read_one(c, cpu);
+
+	return (r);
+}
+
+static void
+counter_u64_zero_one_cpu(void *arg)
+{
+	counter_u64_t c;
+
+	c = arg;
+	MPASS(c != EARLY_COUNTER);
+	*(zpcpu_get(c)) = 0;
+}
+
+static inline void
+counter_u64_zero_inline(counter_u64_t c)
+{
+
+	smp_rendezvous(smp_no_rendezvous_barrier, counter_u64_zero_one_cpu,
+	    smp_no_rendezvous_barrier, c);
+}
+#endif
+
+#define	counter_u64_add_protected(c, i)	counter_u64_add(c, i)
+
+static inline void
+counter_u64_add(counter_u64_t c, int64_t inc)
+{
+
+	KASSERT(IS_BSP() || c != EARLY_COUNTER, ("EARLY_COUNTER used on AP"));
+	zpcpu_add(c, inc);
+}
+
+#endif	/* ! __MACHINE_COUNTER_H__ */
+
+#endif /* __i386__ */