| counter.h (249268) | counter.h (252434) |
|---|---|
| 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 unchanged lines hidden (view full) --- 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 unchanged lines hidden (view full) --- 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/arm/include/counter.h 249268 2013-04-08 19:40:53Z glebius $ | 26 * $FreeBSD: head/sys/arm/include/counter.h 252434 2013-07-01 02:48:27Z kib $ |
| 27 */ 28 29#ifndef __MACHINE_COUNTER_H__ 30#define __MACHINE_COUNTER_H__ 31 32#include <sys/pcpu.h> 33#ifdef INVARIANTS 34#include <sys/proc.h> 35#endif 36 37#define counter_enter() critical_enter() 38#define counter_exit() critical_exit() 39 | 27 */ 28 29#ifndef __MACHINE_COUNTER_H__ 30#define __MACHINE_COUNTER_H__ 31 32#include <sys/pcpu.h> 33#ifdef INVARIANTS 34#include <sys/proc.h> 35#endif 36 37#define counter_enter() critical_enter() 38#define counter_exit() critical_exit() 39 |
| 40#ifdef IN_SUBR_COUNTER_C 41/* XXXKIB non-atomic 64bit read */ 42static inline uint64_t 43counter_u64_read_one(uint64_t *p, int cpu) 44{ 45 46 return (*(uint64_t *)((char *)p + sizeof(struct pcpu) * cpu)); 47} 48 49static inline uint64_t 50counter_u64_fetch_inline(uint64_t *p) 51{ 52 uint64_t r; 53 int i; 54 55 r = 0; 56 for (i = 0; i < mp_ncpus; i++) 57 r += counter_u64_read_one((uint64_t *)p, i); 58 59 return (r); 60} 61 62/* XXXKIB non-atomic 64bit store, might interrupt increment */ 63static void 64counter_u64_zero_one_cpu(void *arg) 65{ 66 67 *((uint64_t *)((char *)arg + sizeof(struct pcpu) * 68 PCPU_GET(cpuid))) = 0; 69} 70 71static inline void 72counter_u64_zero_inline(counter_u64_t c) 73{ 74 75 smp_rendezvous(smp_no_rendevous_barrier, counter_u64_zero_one_cpu, 76 smp_no_rendevous_barrier, c); 77} 78#endif 79 |
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| 40#define counter_u64_add_protected(c, inc) do { \ 41 CRITICAL_ASSERT(curthread); \ 42 *(uint64_t *)zpcpu_get(c) += (inc); \ 43} while (0) 44 45static inline void 46counter_u64_add(counter_u64_t c, int64_t inc) 47{ 48 49 counter_enter(); 50 counter_u64_add_protected(c, inc); 51 counter_exit(); 52} 53 54#endif /* ! __MACHINE_COUNTER_H__ */ | 80#define counter_u64_add_protected(c, inc) do { \ 81 CRITICAL_ASSERT(curthread); \ 82 *(uint64_t *)zpcpu_get(c) += (inc); \ 83} while (0) 84 85static inline void 86counter_u64_add(counter_u64_t c, int64_t inc) 87{ 88 89 counter_enter(); 90 counter_u64_add_protected(c, inc); 91 counter_exit(); 92} 93 94#endif /* ! __MACHINE_COUNTER_H__ */ |