1/*-
2 * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
26 * $FreeBSD: head/sys/amd64/include/counter.h 252434 2013-07-01 02:48:27Z kib $
| 26 * $FreeBSD: head/sys/amd64/include/counter.h 302372 2016-07-06 14:09:49Z nwhitehorn $
|
27 */
28
29#ifndef __MACHINE_COUNTER_H__
30#define __MACHINE_COUNTER_H__
31
32#include <sys/pcpu.h>
33
34extern struct pcpu __pcpu[1];
35
36#define counter_enter() do {} while (0)
37#define counter_exit() do {} while (0)
38
39#ifdef IN_SUBR_COUNTER_C
40static inline uint64_t
41counter_u64_read_one(uint64_t *p, int cpu)
42{
43
44 return (*(uint64_t *)((char *)p + sizeof(struct pcpu) * cpu));
45}
46
47static inline uint64_t
48counter_u64_fetch_inline(uint64_t *p)
49{
50 uint64_t r;
51 int i;
52
53 r = 0;
| 27 */
28
29#ifndef __MACHINE_COUNTER_H__
30#define __MACHINE_COUNTER_H__
31
32#include <sys/pcpu.h>
33
34extern struct pcpu __pcpu[1];
35
36#define counter_enter() do {} while (0)
37#define counter_exit() do {} while (0)
38
39#ifdef IN_SUBR_COUNTER_C
40static inline uint64_t
41counter_u64_read_one(uint64_t *p, int cpu)
42{
43
44 return (*(uint64_t *)((char *)p + sizeof(struct pcpu) * cpu));
45}
46
47static inline uint64_t
48counter_u64_fetch_inline(uint64_t *p)
49{
50 uint64_t r;
51 int i;
52
53 r = 0;
|
54 for (i = 0; i < mp_ncpus; i++)
| 54 CPU_FOREACH(i)
|
55 r += counter_u64_read_one((uint64_t *)p, i);
56
57 return (r);
58}
59
60static void
61counter_u64_zero_one_cpu(void *arg)
62{
63
64 *((uint64_t *)((char *)arg + sizeof(struct pcpu) *
65 PCPU_GET(cpuid))) = 0;
66}
67
68static inline void
69counter_u64_zero_inline(counter_u64_t c)
70{
71
72 smp_rendezvous(smp_no_rendevous_barrier, counter_u64_zero_one_cpu,
73 smp_no_rendevous_barrier, c);
74}
75#endif
76
77#define counter_u64_add_protected(c, i) counter_u64_add(c, i)
78
79static inline void
80counter_u64_add(counter_u64_t c, int64_t inc)
81{
82
83 __asm __volatile("addq\t%1,%%gs:(%0)"
84 :
85 : "r" ((char *)c - (char *)&__pcpu[0]), "ri" (inc)
86 : "memory", "cc");
87}
88
89#endif /* ! __MACHINE_COUNTER_H__ */
| 55 r += counter_u64_read_one((uint64_t *)p, i);
56
57 return (r);
58}
59
60static void
61counter_u64_zero_one_cpu(void *arg)
62{
63
64 *((uint64_t *)((char *)arg + sizeof(struct pcpu) *
65 PCPU_GET(cpuid))) = 0;
66}
67
68static inline void
69counter_u64_zero_inline(counter_u64_t c)
70{
71
72 smp_rendezvous(smp_no_rendevous_barrier, counter_u64_zero_one_cpu,
73 smp_no_rendevous_barrier, c);
74}
75#endif
76
77#define counter_u64_add_protected(c, i) counter_u64_add(c, i)
78
79static inline void
80counter_u64_add(counter_u64_t c, int64_t inc)
81{
82
83 __asm __volatile("addq\t%1,%%gs:(%0)"
84 :
85 : "r" ((char *)c - (char *)&__pcpu[0]), "ri" (inc)
86 : "memory", "cc");
87}
88
89#endif /* ! __MACHINE_COUNTER_H__ */
|