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1.1 root 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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