efc854cf68
char *cpu_name(struct cpu_info *); and use it when setting up the runq event counters, avoiding an 8 byte kmem(4) allocation for each cpu. there are more places the cpuname is used that can be converted to using this new interface, but that can and will be done as future work. as discussed with rmind.
116 lines
4.3 KiB
C
116 lines
4.3 KiB
C
/* $NetBSD: cpu_data.h,v 1.28 2010/01/13 01:57:17 mrg Exp $ */
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/*-
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* Copyright (c) 2004, 2006, 2007, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* based on arch/i386/include/cpu.h:
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* NetBSD: cpu.h,v 1.115 2004/05/16 12:32:53 yamt Exp
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*/
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#ifndef _SYS_CPU_DATA_H_
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#define _SYS_CPU_DATA_H_
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struct callout;
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struct lwp;
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#include <sys/sched.h> /* for schedstate_percpu */
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#include <sys/condvar.h>
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#include <sys/percpu_types.h>
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#include <sys/queue.h>
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/*
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* MI per-cpu data
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*
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* this structure is intended to be included in MD cpu_info structure.
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* struct cpu_info {
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* struct cpu_data ci_data;
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* }
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*
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* note that cpu_data is not expected to contain much data,
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* as cpu_info is size-limited on most ports.
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*/
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struct lockdebug;
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struct cpu_data {
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/*
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* The first section is likely to be touched by other CPUs -
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* it is cache hot.
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*/
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lwp_t *cpu_biglock_wanted; /* LWP spinning on biglock */
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void *cpu_callout; /* per-CPU callout state */
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void *cpu_unused1; /* unused */
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u_int cpu_unused2; /* unused */
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struct schedstate_percpu cpu_schedstate; /* scheduler state */
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kcondvar_t cpu_xcall; /* cross-call support */
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int cpu_xcall_pending; /* cross-call support */
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lwp_t *cpu_onproc; /* bottom level LWP */
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CIRCLEQ_ENTRY(cpu_info) cpu_qchain; /* circleq of all CPUs */
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/*
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* This section is mostly CPU-private.
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*/
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lwp_t *cpu_idlelwp; /* idle lwp */
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void *cpu_lockstat; /* lockstat private tables */
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u_int cpu_index; /* CPU index */
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u_int cpu_biglock_count; /* # recursive holds */
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u_int cpu_spin_locks; /* # of spinlockmgr locks */
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u_int cpu_simple_locks; /* # of simple locks held */
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u_int cpu_spin_locks2; /* # of spin locks held XXX */
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u_int cpu_lkdebug_recurse; /* LOCKDEBUG recursion */
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u_int cpu_softints; /* pending (slow) softints */
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u_int cpu_nsyscall; /* syscall counter */
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u_int cpu_ntrap; /* trap counter */
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u_int cpu_nswtch; /* context switch counter */
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void *cpu_uvm; /* uvm per-cpu data */
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void *cpu_softcpu; /* soft interrupt table */
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TAILQ_HEAD(,buf) cpu_biodone; /* finished block xfers */
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percpu_cpu_t cpu_percpu; /* per-cpu data */
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struct selcpu *cpu_selcpu; /* per-CPU select() info */
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void *cpu_nch; /* per-cpu vfs_cache data */
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_TAILQ_HEAD(,struct lockdebug,volatile) cpu_ld_locks;/* !: lockdebug */
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__cpu_simple_lock_t cpu_ld_lock; /* lockdebug */
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uint64_t cpu_cc_freq; /* cycle counter frequency */
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int64_t cpu_cc_skew; /* counter skew vs cpu0 */
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char cpu_name[8]; /* eg, "cpu4" */
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};
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/* compat definitions */
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#define ci_schedstate ci_data.cpu_schedstate
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#define ci_index ci_data.cpu_index
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#define ci_biglock_count ci_data.cpu_biglock_count
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#define ci_biglock_wanted ci_data.cpu_biglock_wanted
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#define ci_spin_locks ci_data.cpu_spin_locks
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#define ci_simple_locks ci_data.cpu_simple_locks
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#define ci_lockstat ci_data.cpu_lockstat
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#define ci_spin_locks2 ci_data.cpu_spin_locks2
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#define ci_lkdebug_recurse ci_data.cpu_lkdebug_recurse
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int mi_cpu_attach(struct cpu_info *ci);
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#endif /* _SYS_CPU_DATA_H_ */
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