mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-26 02:20:51 +01:00
a2a0f90654
Many extern struct pcpu <something>__pcpu declarations were copied/pasted in sources. The issue is that the definition is MD, but it cannot be provided by machine/pcpu.h due to actual struct pcpu defined in sys/pcpu.h later than the inclusion of machine/pcpu.h. This forced the copying when other code needed direct access to __pcpu. There is no way around it, due to machine/pcpu.h supplying part of struct pcpu fields. To work around the problem, add a new machine/pcpu_aux.h header, which should fill any needed MD definitions after struct pcpu definition is completed. This allows to remove copies of __pcpu spread around the source. Also on x86 it makes it possible to remove work arounds like OFFSETOF_CURTHREAD or clang specific warnings supressions. Reported and tested by: lwhsu, bcran Reviewed by: imp, markj (previous version) Discussed with: jhb Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D21418
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* 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>
|
|
#include <machine/atomic.h>
|
|
|
|
#define EARLY_COUNTER &__pcpu[0].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(uint64_t *p, int cpu)
|
|
{
|
|
|
|
return (atomic_load_64((uint64_t *)((char *)p + UMA_PCPU_ALLOC_SIZE *
|
|
cpu)));
|
|
}
|
|
|
|
static inline uint64_t
|
|
counter_u64_fetch_inline(uint64_t *p)
|
|
{
|
|
uint64_t r;
|
|
int i;
|
|
|
|
r = 0;
|
|
CPU_FOREACH(i)
|
|
r += counter_u64_read_one((uint64_t *)p, i);
|
|
|
|
return (r);
|
|
}
|
|
|
|
static void
|
|
counter_u64_zero_one_cpu(void *arg)
|
|
{
|
|
|
|
atomic_store_64((uint64_t *)((char *)arg + UMA_PCPU_ALLOC_SIZE *
|
|
PCPU_GET(cpuid)), 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, inc) counter_u64_add(c, inc)
|
|
|
|
static inline void
|
|
counter_u64_add(counter_u64_t c, int64_t inc)
|
|
{
|
|
|
|
atomic_add_64((uint64_t *)zpcpu_get(c), inc);
|
|
}
|
|
|
|
#endif /* ! __MACHINE_COUNTER_H__ */
|