17dece86fe
Pad struct pcpu so that its size is denominator of PAGE_SIZE. This is done to reduce memory waste in UMA_PCPU_ZONE zones. Sponsored by: Nginx, Inc.
111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
/*-
|
|
* Copyright (c) 1999 Luoqi Chen <luoqi@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.
|
|
*
|
|
* from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PCPU_H_
|
|
#define _MACHINE_PCPU_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <machine/cpuconf.h>
|
|
#include <machine/frame.h>
|
|
|
|
#define ALT_STACK_SIZE 128
|
|
|
|
struct vmspace;
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef ARM_VFP_SUPPORT
|
|
#define PCPU_MD_FIELDS \
|
|
unsigned int pc_cpu; \
|
|
unsigned int pc_vfpsid; \
|
|
unsigned int pc_vfpmvfr0; \
|
|
unsigned int pc_vfpmvfr1; \
|
|
struct thread *pc_vfpcthread; \
|
|
struct pmap *pc_curpmap; \
|
|
char __pad[133]
|
|
#else
|
|
#define PCPU_MD_FIELDS \
|
|
char __pad[157]
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
|
|
struct pcb;
|
|
struct pcpu;
|
|
|
|
extern struct pcpu *pcpup;
|
|
#if ARM_ARCH_6 || ARM_ARCH_7A
|
|
/* or ARM_TP_ADDRESS mark REMOVE ME NOTE */
|
|
static inline struct pcpu *
|
|
get_pcpu(void)
|
|
{
|
|
void *pcpu;
|
|
|
|
__asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (pcpu));
|
|
return (pcpu);
|
|
}
|
|
|
|
static inline void
|
|
set_pcpu(void *pcpu)
|
|
{
|
|
|
|
__asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (pcpu));
|
|
}
|
|
|
|
static inline void *
|
|
get_tls(void)
|
|
{
|
|
void *tls;
|
|
|
|
__asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls));
|
|
return (tls);
|
|
}
|
|
|
|
static inline void
|
|
set_tls(void *tls)
|
|
{
|
|
|
|
__asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls));
|
|
}
|
|
#else
|
|
#define get_pcpu() pcpup
|
|
#endif
|
|
|
|
#define PCPU_GET(member) (get_pcpu()->pc_ ## member)
|
|
#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
|
|
#define PCPU_INC(member) PCPU_ADD(member, 1)
|
|
#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
|
|
#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
|
|
|
|
void pcpu0_init(void);
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_PCPU_H_ */
|