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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef	_CMT_H
     27 #define	_CMT_H
     28 
     29 #pragma ident	"@(#)cmt.h	1.2	07/07/06 SMI"
     30 
     31 /*
     32  * CMT PG class
     33  */
     34 
     35 #ifdef	__cplusplus
     36 extern "C" {
     37 #endif
     38 
     39 #if (defined(_KERNEL) || defined(_KMEMUSER))
     40 #include <sys/group.h>
     41 #include <sys/pghw.h>
     42 #include <sys/types.h>
     43 
     44 /*
     45  * CMT pg structure
     46  */
     47 typedef struct pg_cmt {
     48 	struct pghw	cmt_pg;			/* physical grouping */
     49 	struct group	*cmt_siblings;		/* CMT PGs to balance with */
     50 	struct pg_cmt	*cmt_parent;		/* Parent CMT PG */
     51 	struct group	*cmt_children;		/* Active children CMT PGs */
     52 	int		cmt_nchildren;		/* # of children CMT PGs */
     53 	int		cmt_hint;		/* hint for balancing */
     54 	uint32_t	cmt_nrunning;		/* # of running threads */
     55 	struct group	cmt_cpus_actv;
     56 	bitset_t	cmt_cpus_actv_set;	/* bitset of active CPUs */
     57 } pg_cmt_t;
     58 
     59 
     60 /*
     61  * Change the number of running threads on the pg
     62  */
     63 #define	PG_NRUN_UPDATE(cp, n)	(pg_cmt_load((cp), (n)))
     64 
     65 void		pg_cmt_load(cpu_t *, int);
     66 void		pg_cmt_cpu_startup(cpu_t *);
     67 int		pg_cmt_can_migrate(cpu_t *, cpu_t *);
     68 
     69 int		pg_plat_cmt_load_bal_hw(pghw_type_t);
     70 int		pg_plat_cmt_affinity_hw(pghw_type_t);
     71 
     72 #endif	/* !_KERNEL && !_KMEMUSER */
     73 
     74 #ifdef	__cplusplus
     75 }
     76 #endif
     77 
     78 #endif /* _CMT_H */
     79