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re #13613 rb4516 Tunables needs volatile keyword


   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 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */



  26 
  27 #ifndef _SYS_CLOCK_TICK_H
  28 #define _SYS_CLOCK_TICK_H
  29 
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31 
  32 #include <sys/types.h>
  33 #include <sys/mutex.h>
  34 #include <sys/cpuvar.h>
  35 #include <sys/systm.h>
  36 #include <sys/cyclic.h>
  37 
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41 
  42 #define CLOCK_TICK_NCPUS        32
  43 
  44 /*
  45  * Per-CPU structure to facilitate multi-threaded tick accounting.
  46  *
  47  * ct_lock
  48  *      Mutex for the structure. Used to lock the structure to pass
  49  *      arguments to the tick processing softint handler.
  50  * ct_intr
  51  *      Tick processing softint handle. For parallelism, each CPU


  91 
  92 #define CLOCK_TICK_CPU_OFFLINE(cp)      \
  93         (((cp) != cpu_active) && ((cp)->cpu_next_onln == (cp)))
  94 
  95 #define CLOCK_TICK_XCALL_SAFE(cp)       \
  96                 CPU_IN_SET(clock_tick_online_cpuset, cp->cpu_id)
  97 
  98 #define CLOCK_TICK_PROC_MAX             10
  99 
 100 #ifdef  _KERNEL
 101 #pragma weak            create_softint
 102 extern ulong_t          create_softint(uint_t, uint_t (*)(caddr_t, caddr_t),
 103                                 caddr_t);
 104 #pragma weak            invoke_softint
 105 extern void             invoke_softint(processorid_t, ulong_t);
 106 #pragma weak            sync_softint
 107 extern void             sync_softint(cpuset_t);
 108 extern void             clock_tick(kthread_t *, int);
 109 extern void             membar_sync(void);
 110 
 111 extern int              hires_tick;
 112 #endif  /* _KERNEL */
 113 
 114 #ifdef  __cplusplus
 115 }
 116 #endif
 117 
 118 #endif /* _SYS_CLOCK_TICK_H */


   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 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 /*
  27  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  28  */
  29 
  30 #ifndef _SYS_CLOCK_TICK_H
  31 #define _SYS_CLOCK_TICK_H
  32 


  33 #include <sys/types.h>
  34 #include <sys/mutex.h>
  35 #include <sys/cpuvar.h>
  36 #include <sys/systm.h>
  37 #include <sys/cyclic.h>
  38 
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42 
  43 #define CLOCK_TICK_NCPUS        32
  44 
  45 /*
  46  * Per-CPU structure to facilitate multi-threaded tick accounting.
  47  *
  48  * ct_lock
  49  *      Mutex for the structure. Used to lock the structure to pass
  50  *      arguments to the tick processing softint handler.
  51  * ct_intr
  52  *      Tick processing softint handle. For parallelism, each CPU


  92 
  93 #define CLOCK_TICK_CPU_OFFLINE(cp)      \
  94         (((cp) != cpu_active) && ((cp)->cpu_next_onln == (cp)))
  95 
  96 #define CLOCK_TICK_XCALL_SAFE(cp)       \
  97                 CPU_IN_SET(clock_tick_online_cpuset, cp->cpu_id)
  98 
  99 #define CLOCK_TICK_PROC_MAX             10
 100 
 101 #ifdef  _KERNEL
 102 #pragma weak            create_softint
 103 extern ulong_t          create_softint(uint_t, uint_t (*)(caddr_t, caddr_t),
 104                                 caddr_t);
 105 #pragma weak            invoke_softint
 106 extern void             invoke_softint(processorid_t, ulong_t);
 107 #pragma weak            sync_softint
 108 extern void             sync_softint(cpuset_t);
 109 extern void             clock_tick(kthread_t *, int);
 110 extern void             membar_sync(void);
 111 
 112 extern volatile int     hires_tick;
 113 #endif  /* _KERNEL */
 114 
 115 #ifdef  __cplusplus
 116 }
 117 #endif
 118 
 119 #endif /* _SYS_CLOCK_TICK_H */