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sys/arm64/include/counter.h
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef _MACHINE_COUNTER_H_ | |||||
| #define _MACHINE_COUNTER_H_ | |||||
| #include <sys/pcpu.h> | |||||
| #ifdef INVARIANTS | |||||
| #include <sys/proc.h> | |||||
| #endif | |||||
| #define counter_enter() critical_enter() | |||||
| #define counter_exit() critical_exit() | |||||
| #ifdef IN_SUBR_COUNTER_C | |||||
| static inline uint64_t | |||||
| counter_u64_read_one(uint64_t *p, int cpu) | |||||
| { | |||||
| return (*(uint64_t *)((char *)p + sizeof(struct pcpu) * cpu)); | |||||
| } | |||||
| static inline uint64_t | |||||
| counter_u64_fetch_inline(uint64_t *p) | |||||
| { | |||||
| uint64_t r; | |||||
| int i; | |||||
| r = 0; | |||||
| for (i = 0; i < mp_ncpus; i++) | |||||
| r += counter_u64_read_one((uint64_t *)p, i); | |||||
| return (r); | |||||
| } | |||||
| /* XXXKIB might interrupt increment */ | |||||
| static void | |||||
| counter_u64_zero_one_cpu(void *arg) | |||||
| { | |||||
| *((uint64_t *)((char *)arg + sizeof(struct pcpu) * | |||||
| PCPU_GET(cpuid))) = 0; | |||||
| } | |||||
| static inline void | |||||
| counter_u64_zero_inline(counter_u64_t c) | |||||
| { | |||||
| smp_rendezvous(smp_no_rendevous_barrier, counter_u64_zero_one_cpu, | |||||
| smp_no_rendevous_barrier, c); | |||||
| } | |||||
| #endif | |||||
| #define counter_u64_add_protected(c, inc) do { \ | |||||
| CRITICAL_ASSERT(curthread); \ | |||||
| *(uint64_t *)zpcpu_get(c) += (inc); \ | |||||
| } while (0) | |||||
| static inline void | |||||
| counter_u64_add(counter_u64_t c, int64_t inc) | |||||
| { | |||||
| counter_enter(); | |||||
| counter_u64_add_protected(c, inc); | |||||
| counter_exit(); | |||||
| } | |||||
| #endif /* ! _MACHINE_COUNTER_H_ */ | |||||