536af0d751
from the inline assembly. This allows the compiler to cache invocations of curthread since it's value does not change within a thread context. Submitted by: zec (i386) MFC after: 1 week
97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
|
|
* Copyright (c) Peter Wemm <peter@netplex.com.au>
|
|
* 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_PCPU_H_
|
|
#define _MACHINE_PCPU_H_
|
|
|
|
#include <sys/sysctl.h>
|
|
#include <machine/pcb.h>
|
|
|
|
struct pcpu_stats {
|
|
u_long pcs_nasts; /* IPI_AST counter. */
|
|
u_long pcs_nclks; /* Clock interrupt counter. */
|
|
u_long pcs_nextints; /* ExtINT counter. */
|
|
u_long pcs_nhighfps; /* IPI_HIGH_FP counter. */
|
|
u_long pcs_nhwints; /* Hardware int. counter. */
|
|
u_long pcs_npreempts; /* IPI_PREEMPT counter. */
|
|
u_long pcs_nrdvs; /* IPI_RENDEZVOUS counter. */
|
|
u_long pcs_nstops; /* IPI_STOP counter. */
|
|
u_long pcs_nstrays; /* Stray interrupt counter. */
|
|
};
|
|
|
|
struct pcpu_md {
|
|
struct pcb pcb; /* Used by IPI_STOP */
|
|
struct pmap *current_pmap; /* active pmap */
|
|
vm_offset_t vhpt; /* Address of VHPT */
|
|
uint64_t lid; /* local CPU ID */
|
|
uint64_t clock; /* Clock counter. */
|
|
uint64_t clockadj; /* Clock adjust. */
|
|
uint32_t awake:1; /* CPU is awake? */
|
|
struct pcpu_stats stats; /* Interrupt stats. */
|
|
#ifdef _KERNEL
|
|
struct sysctl_ctx_list sysctl_ctx;
|
|
struct sysctl_oid *sysctl_tree;
|
|
#endif
|
|
};
|
|
|
|
#define PCPU_MD_FIELDS \
|
|
uint32_t pc_acpi_id; /* ACPI CPU id. */ \
|
|
struct pcpu_md pc_md /* MD fields. */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
struct pcpu;
|
|
|
|
register struct pcpu *pcpup __asm__("r13");
|
|
|
|
static __inline __pure2 struct thread *
|
|
__curthread(void)
|
|
{
|
|
struct thread *td;
|
|
|
|
__asm("ld8.acq %0=[r13]" : "=r"(td));
|
|
return (td);
|
|
}
|
|
#define curthread (__curthread())
|
|
|
|
#define PCPU_GET(member) (pcpup->pc_ ## member)
|
|
|
|
/*
|
|
* XXX The implementation of this operation should be made atomic
|
|
* with respect to preemption.
|
|
*/
|
|
#define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
|
|
#define PCPU_INC(member) PCPU_ADD(member, 1)
|
|
#define PCPU_PTR(member) (&pcpup->pc_ ## member)
|
|
#define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_PCPU_H_ */
|