The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/xenoprof.h

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    1 /******************************************************************************
    2  * xenoprof.h
    3  * 
    4  * Interface for enabling system wide profiling based on hardware performance
    5  * counters
    6  * 
    7  * Permission is hereby granted, free of charge, to any person obtaining a copy
    8  * of this software and associated documentation files (the "Software"), to
    9  * deal in the Software without restriction, including without limitation the
   10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   11  * sell copies of the Software, and to permit persons to whom the Software is
   12  * furnished to do so, subject to the following conditions:
   13  *
   14  * The above copyright notice and this permission notice shall be included in
   15  * all copies or substantial portions of the Software.
   16  *
   17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   23  * DEALINGS IN THE SOFTWARE.
   24  *
   25  * Copyright (C) 2005 Hewlett-Packard Co.
   26  * Written by Aravind Menon & Jose Renato Santos
   27  */
   28 
   29 #ifndef __XEN_PUBLIC_XENOPROF_H__
   30 #define __XEN_PUBLIC_XENOPROF_H__
   31 
   32 #include "xen.h"
   33 
   34 /*
   35  * Commands to HYPERVISOR_xenoprof_op().
   36  */
   37 #define XENOPROF_init                0
   38 #define XENOPROF_reset_active_list   1
   39 #define XENOPROF_reset_passive_list  2
   40 #define XENOPROF_set_active          3
   41 #define XENOPROF_set_passive         4
   42 #define XENOPROF_reserve_counters    5
   43 #define XENOPROF_counter             6
   44 #define XENOPROF_setup_events        7
   45 #define XENOPROF_enable_virq         8
   46 #define XENOPROF_start               9
   47 #define XENOPROF_stop               10
   48 #define XENOPROF_disable_virq       11
   49 #define XENOPROF_release_counters   12
   50 #define XENOPROF_shutdown           13
   51 #define XENOPROF_get_buffer         14
   52 #define XENOPROF_set_backtrace      15
   53 #define XENOPROF_last_op            15
   54 
   55 #define MAX_OPROF_EVENTS    32
   56 #define MAX_OPROF_DOMAINS   25
   57 #define XENOPROF_CPU_TYPE_SIZE 64
   58 
   59 /* Xenoprof performance events (not Xen events) */
   60 struct event_log {
   61     uint64_t eip;
   62     uint8_t mode;
   63     uint8_t event;
   64 };
   65 
   66 /* PC value that indicates a special code */
   67 #define XENOPROF_ESCAPE_CODE ~0UL
   68 /* Transient events for the xenoprof->oprofile cpu buf */
   69 #define XENOPROF_TRACE_BEGIN 1
   70 
   71 /* Xenoprof buffer shared between Xen and domain - 1 per VCPU */
   72 struct xenoprof_buf {
   73     uint32_t event_head;
   74     uint32_t event_tail;
   75     uint32_t event_size;
   76     uint32_t vcpu_id;
   77     uint64_t xen_samples;
   78     uint64_t kernel_samples;
   79     uint64_t user_samples;
   80     uint64_t lost_samples;
   81     struct event_log event_log[1];
   82 };
   83 #ifndef __XEN__
   84 typedef struct xenoprof_buf xenoprof_buf_t;
   85 DEFINE_XEN_GUEST_HANDLE(xenoprof_buf_t);
   86 #endif
   87 
   88 struct xenoprof_init {
   89     int32_t  num_events;
   90     int32_t  is_primary;
   91     char cpu_type[XENOPROF_CPU_TYPE_SIZE];
   92 };
   93 typedef struct xenoprof_init xenoprof_init_t;
   94 DEFINE_XEN_GUEST_HANDLE(xenoprof_init_t);
   95 
   96 struct xenoprof_get_buffer {
   97     int32_t  max_samples;
   98     int32_t  nbuf;
   99     int32_t  bufsize;
  100     uint64_t buf_gmaddr;
  101 };
  102 typedef struct xenoprof_get_buffer xenoprof_get_buffer_t;
  103 DEFINE_XEN_GUEST_HANDLE(xenoprof_get_buffer_t);
  104 
  105 struct xenoprof_counter {
  106     uint32_t ind;
  107     uint64_t count;
  108     uint32_t enabled;
  109     uint32_t event;
  110     uint32_t hypervisor;
  111     uint32_t kernel;
  112     uint32_t user;
  113     uint64_t unit_mask;
  114 };
  115 typedef struct xenoprof_counter xenoprof_counter_t;
  116 DEFINE_XEN_GUEST_HANDLE(xenoprof_counter_t);
  117 
  118 typedef struct xenoprof_passive {
  119     uint16_t domain_id;
  120     int32_t  max_samples;
  121     int32_t  nbuf;
  122     int32_t  bufsize;
  123     uint64_t buf_gmaddr;
  124 } xenoprof_passive_t;
  125 DEFINE_XEN_GUEST_HANDLE(xenoprof_passive_t);
  126 
  127 
  128 #endif /* __XEN_PUBLIC_XENOPROF_H__ */
  129 
  130 /*
  131  * Local variables:
  132  * mode: C
  133  * c-set-style: "BSD"
  134  * c-basic-offset: 4
  135  * tab-width: 4
  136  * indent-tabs-mode: nil
  137  * End:
  138  */

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