/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2017 RackTop Systems. */ #ifndef _SYS_CPUPART_H #define _SYS_CPUPART_H #include <sys/types.h> #include <sys/processor.h> #include <sys/cpuvar.h> #include <sys/disp.h> #include <sys/pset.h> #include <sys/lgrp.h> #include <sys/lgrp_user.h> #include <sys/pg.h> #include <sys/bitset.h> #include <sys/time.h> #ifdef __cplusplus extern "C" { #endif #if defined(_KERNEL) || defined(_FAKE_KERNEL) typedef int cpupartid_t; /* * Special partition id. */ #define CP_DEFAULT 0 /* * Flags for cpupart_list() */ #define CP_ALL 0 /* return all cpu partitions */ #define CP_NONEMPTY 1 /* return only non-empty ones */ typedef struct cpupart { disp_t cp_kp_queue; /* partition-wide kpreempt queue */ cpupartid_t cp_id; /* partition ID */ int cp_ncpus; /* number of online processors */ struct cpupart *cp_next; /* next partition in list */ struct cpupart *cp_prev; /* previous partition in list */ struct cpu *cp_cpulist; /* processor list */ struct kstat *cp_kstat; /* per-partition statistics */ /* * cp_nrunnable and cp_nrunning are used to calculate load average. */ uint_t cp_nrunnable; /* current # of runnable threads */ uint_t cp_nrunning; /* current # of running threads */ /* * cp_updates, cp_nrunnable_cum, cp_nwaiting_cum, and cp_hp_avenrun * are used to generate kstat information on an as-needed basis. */ uint64_t cp_updates; /* number of statistics updates */ uint64_t cp_nrunnable_cum; /* cum. # of runnable threads */ uint64_t cp_nwaiting_cum; /* cum. # of waiting threads */ struct loadavg_s cp_loadavg; /* cpupart loadavg */ klgrpset_t cp_lgrpset; /* set of lgroups on which this */ /* partition has cpus */ lpl_t *cp_lgrploads; /* table of load averages for this */ /* partition, indexed by lgrp ID */ int cp_nlgrploads; /* size of cp_lgrploads table */ uint64_t cp_hp_avenrun[3]; /* high-precision load average */ uint_t cp_attr; /* bitmask of attributes */ lgrp_gen_t cp_gen; /* generation number */ lgrp_id_t cp_lgrp_hint; /* last home lgroup chosen */ bitset_t cp_cmt_pgs; /* CMT PGs represented */ bitset_t cp_haltset; /* halted CPUs */ } cpupart_t; typedef struct cpupart_kstat { kstat_named_t cpk_updates; /* number of updates */ kstat_named_t cpk_runnable; /* cum # of runnable threads */ kstat_named_t cpk_waiting; /* cum # waiting for I/O */ kstat_named_t cpk_ncpus; /* current # of CPUs */ kstat_named_t cpk_avenrun_1min; /* 1-minute load average */ kstat_named_t cpk_avenrun_5min; /* 5-minute load average */ kstat_named_t cpk_avenrun_15min; /* 15-minute load average */ } cpupart_kstat_t; /* * Macro to obtain the maximum run priority for the global queue associated * with given cpu partition. */ #define CP_MAXRUNPRI(cp) ((cp)->cp_kp_queue.disp_maxrunpri) /* * This macro is used to determine if the given thread must surrender * CPU to higher priority runnable threads on one of its dispatch queues. * This should really be defined in <sys/disp.h> but it is not because * including <sys/cpupart.h> there would cause recursive includes. */ #define DISP_MUST_SURRENDER(t) \ ((DISP_MAXRUNPRI(t) > DISP_PRIO(t)) || \ (CP_MAXRUNPRI(t->t_cpupart) > DISP_PRIO(t))) extern cpupart_t cp_default; extern cpupart_t *cp_list_head; extern uint_t cp_numparts; extern uint_t cp_numparts_nonempty; /* * Each partition contains a bitset that indicates which CPUs are halted and * which ones are running. Given the growing number of CPUs in current and * future platforms, it's important to fanout each CPU within its partition's * haltset to prevent contention due to false sharing. The fanout factor * is platform specific, and declared accordingly. */ extern uint_t cp_haltset_fanout; extern void cpupart_initialize_default(); extern cpupart_t *cpupart_find(psetid_t); extern int cpupart_create(psetid_t *); extern int cpupart_destroy(psetid_t); extern psetid_t cpupart_query_cpu(cpu_t *); extern int cpupart_attach_cpu(psetid_t, cpu_t *, int); extern int cpupart_get_cpus(psetid_t *, processorid_t *, uint_t *); extern int cpupart_bind_thread(kthread_id_t, psetid_t, int, void *, void *); extern void cpupart_kpqalloc(pri_t); extern int cpupart_get_loadavg(psetid_t, int *, int); extern uint_t cpupart_list(psetid_t *, uint_t, int); extern int cpupart_setattr(psetid_t, uint_t); extern int cpupart_getattr(psetid_t, uint_t *); #endif /* _KERNEL || _FAKE_KERNEL */ #ifdef __cplusplus } #endif #endif /* _SYS_CPUPART_H */
