2850d85b7b93f31e578520dc3b3feb24db609c62mv/*
2850d85b7b93f31e578520dc3b3feb24db609c62mv * CDDL HEADER START
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
2850d85b7b93f31e578520dc3b3feb24db609c62mv * The contents of this file are subject to the terms of the
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Common Development and Distribution License (the "License").
2850d85b7b93f31e578520dc3b3feb24db609c62mv * You may not use this file except in compliance with the License.
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
2850d85b7b93f31e578520dc3b3feb24db609c62mv * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2850d85b7b93f31e578520dc3b3feb24db609c62mv * or http://www.opensolaris.org/os/licensing.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * See the License for the specific language governing permissions
2850d85b7b93f31e578520dc3b3feb24db609c62mv * and limitations under the License.
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
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2850d85b7b93f31e578520dc3b3feb24db609c62mv * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * If applicable, add the following below this CDDL HEADER, with the
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2850d85b7b93f31e578520dc3b3feb24db609c62mv * information: Portions Copyright [yyyy] [name of copyright owner]
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
2850d85b7b93f31e578520dc3b3feb24db609c62mv * CDDL HEADER END
2850d85b7b93f31e578520dc3b3feb24db609c62mv */
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv/*
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Use is subject to license terms.
2850d85b7b93f31e578520dc3b3feb24db609c62mv */
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#ifndef _SYS_CLOCK_TICK_H
2850d85b7b93f31e578520dc3b3feb24db609c62mv#define _SYS_CLOCK_TICK_H
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#pragma ident "%Z%%M% %I% %E% SMI"
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#include <sys/types.h>
2850d85b7b93f31e578520dc3b3feb24db609c62mv#include <sys/mutex.h>
2850d85b7b93f31e578520dc3b3feb24db609c62mv#include <sys/cpuvar.h>
2850d85b7b93f31e578520dc3b3feb24db609c62mv#include <sys/systm.h>
2850d85b7b93f31e578520dc3b3feb24db609c62mv#include <sys/cyclic.h>
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#ifdef __cplusplus
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern "C" {
2850d85b7b93f31e578520dc3b3feb24db609c62mv#endif
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#define CLOCK_TICK_NCPUS 32
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv/*
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Per-CPU structure to facilitate multi-threaded tick accounting.
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_lock
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Mutex for the structure. Used to lock the structure to pass
2850d85b7b93f31e578520dc3b3feb24db609c62mv * arguments to the tick processing softint handler.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_intr
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Tick processing softint handle. For parallelism, each CPU
2850d85b7b93f31e578520dc3b3feb24db609c62mv * needs to have its own softint handle.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_lbolt
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Copy of the lbolt at the time of tick scheduling.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_pending
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Number of ticks to be processed by one invocation of the tick
2850d85b7b93f31e578520dc3b3feb24db609c62mv * processing softint.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_start
2850d85b7b93f31e578520dc3b3feb24db609c62mv * First CPU to do tick processing for.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_end
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Last CPU to do tick processing for.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_scan
2850d85b7b93f31e578520dc3b3feb24db609c62mv * CPU to start the tick processing from. Rotated every tick.
2850d85b7b93f31e578520dc3b3feb24db609c62mv */
2850d85b7b93f31e578520dc3b3feb24db609c62mvtypedef struct clock_tick_cpu {
2850d85b7b93f31e578520dc3b3feb24db609c62mv kmutex_t ct_lock;
2850d85b7b93f31e578520dc3b3feb24db609c62mv ulong_t ct_intr;
2850d85b7b93f31e578520dc3b3feb24db609c62mv clock_t ct_lbolt;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_pending;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_start;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_end;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_scan;
2850d85b7b93f31e578520dc3b3feb24db609c62mv} clock_tick_cpu_t;
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv/*
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Per-set structure to facilitate multi-threaded tick accounting.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * clock_tick_lock protects this.
2850d85b7b93f31e578520dc3b3feb24db609c62mv *
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_start
2850d85b7b93f31e578520dc3b3feb24db609c62mv * First CPU to do tick processing for.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_end
2850d85b7b93f31e578520dc3b3feb24db609c62mv * Last CPU to do tick processing for.
2850d85b7b93f31e578520dc3b3feb24db609c62mv * ct_scan
2850d85b7b93f31e578520dc3b3feb24db609c62mv * CPU to start the tick processing from. Rotated every tick.
2850d85b7b93f31e578520dc3b3feb24db609c62mv */
2850d85b7b93f31e578520dc3b3feb24db609c62mvtypedef struct clock_tick_set {
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_start;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_end;
2850d85b7b93f31e578520dc3b3feb24db609c62mv int ct_scan;
2850d85b7b93f31e578520dc3b3feb24db609c62mv} clock_tick_set_t;
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#define CLOCK_TICK_CPU_OFFLINE(cp) \
2850d85b7b93f31e578520dc3b3feb24db609c62mv (((cp) != cpu_active) && ((cp)->cpu_next_onln == (cp)))
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#define CLOCK_TICK_XCALL_SAFE(cp) \
2850d85b7b93f31e578520dc3b3feb24db609c62mv CPU_IN_SET(clock_tick_online_cpuset, cp->cpu_id)
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#define CLOCK_TICK_PROC_MAX 10
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#ifdef _KERNEL
2850d85b7b93f31e578520dc3b3feb24db609c62mv#pragma weak create_softint
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern ulong_t create_softint(uint_t, uint_t (*)(caddr_t, caddr_t),
2850d85b7b93f31e578520dc3b3feb24db609c62mv caddr_t);
2850d85b7b93f31e578520dc3b3feb24db609c62mv#pragma weak invoke_softint
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern void invoke_softint(processorid_t, ulong_t);
2850d85b7b93f31e578520dc3b3feb24db609c62mv#pragma weak sync_softint
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern void sync_softint(cpuset_t);
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern void clock_tick(kthread_t *, int);
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern void membar_sync(void);
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mvextern int hires_tick;
2850d85b7b93f31e578520dc3b3feb24db609c62mv#endif /* _KERNEL */
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#ifdef __cplusplus
2850d85b7b93f31e578520dc3b3feb24db609c62mv}
2850d85b7b93f31e578520dc3b3feb24db609c62mv#endif
2850d85b7b93f31e578520dc3b3feb24db609c62mv
2850d85b7b93f31e578520dc3b3feb24db609c62mv#endif /* _SYS_CLOCK_TICK_H */