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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2002-2003 Hewlett-Packard Co | |
3 | * Stephane Eranian <eranian@hpl.hp.com> | |
4 | * | |
5 | * This file implements the default sampling buffer format | |
6 | * for Linux/ia64 perfmon subsystem. | |
7 | */ | |
8 | #ifndef __PERFMON_DEFAULT_SMPL_H__ | |
9 | #define __PERFMON_DEFAULT_SMPL_H__ 1 | |
10 | ||
11 | #define PFM_DEFAULT_SMPL_UUID { \ | |
12 | 0x4d, 0x72, 0xbe, 0xc0, 0x06, 0x64, 0x41, 0x43, 0x82, 0xb4, 0xd3, 0xfd, 0x27, 0x24, 0x3c, 0x97} | |
13 | ||
14 | /* | |
15 | * format specific parameters (passed at context creation) | |
16 | */ | |
17 | typedef struct { | |
18 | unsigned long buf_size; /* size of the buffer in bytes */ | |
19 | unsigned int flags; /* buffer specific flags */ | |
20 | unsigned int res1; /* for future use */ | |
21 | unsigned long reserved[2]; /* for future use */ | |
22 | } pfm_default_smpl_arg_t; | |
23 | ||
24 | /* | |
25 | * combined context+format specific structure. Can be passed | |
26 | * to PFM_CONTEXT_CREATE | |
27 | */ | |
28 | typedef struct { | |
29 | pfarg_context_t ctx_arg; | |
30 | pfm_default_smpl_arg_t buf_arg; | |
31 | } pfm_default_smpl_ctx_arg_t; | |
32 | ||
33 | /* | |
34 | * This header is at the beginning of the sampling buffer returned to the user. | |
35 | * It is directly followed by the first record. | |
36 | */ | |
37 | typedef struct { | |
38 | unsigned long hdr_count; /* how many valid entries */ | |
39 | unsigned long hdr_cur_offs; /* current offset from top of buffer */ | |
40 | unsigned long hdr_reserved2; /* reserved for future use */ | |
41 | ||
42 | unsigned long hdr_overflows; /* how many times the buffer overflowed */ | |
43 | unsigned long hdr_buf_size; /* how many bytes in the buffer */ | |
44 | ||
45 | unsigned int hdr_version; /* contains perfmon version (smpl format diffs) */ | |
46 | unsigned int hdr_reserved1; /* for future use */ | |
47 | unsigned long hdr_reserved[10]; /* for future use */ | |
48 | } pfm_default_smpl_hdr_t; | |
49 | ||
50 | /* | |
51 | * Entry header in the sampling buffer. The header is directly followed | |
52 | * with the values of the PMD registers of interest saved in increasing | |
53 | * index order: PMD4, PMD5, and so on. How many PMDs are present depends | |
54 | * on how the session was programmed. | |
55 | * | |
56 | * In the case where multiple counters overflow at the same time, multiple | |
57 | * entries are written consecutively. | |
58 | * | |
59 | * last_reset_value member indicates the initial value of the overflowed PMD. | |
60 | */ | |
61 | typedef struct { | |
62 | int pid; /* thread id (for NPTL, this is gettid()) */ | |
63 | unsigned char reserved1[3]; /* reserved for future use */ | |
64 | unsigned char ovfl_pmd; /* index of overflowed PMD */ | |
65 | ||
66 | unsigned long last_reset_val; /* initial value of overflowed PMD */ | |
67 | unsigned long ip; /* where did the overflow interrupt happened */ | |
68 | unsigned long tstamp; /* ar.itc when entering perfmon intr. handler */ | |
69 | ||
70 | unsigned short cpu; /* cpu on which the overfow occured */ | |
71 | unsigned short set; /* event set active when overflow ocurred */ | |
72 | int tgid; /* thread group id (for NPTL, this is getpid()) */ | |
73 | } pfm_default_smpl_entry_t; | |
74 | ||
75 | #define PFM_DEFAULT_MAX_PMDS 64 /* how many pmds supported by data structures (sizeof(unsigned long) */ | |
76 | #define PFM_DEFAULT_MAX_ENTRY_SIZE (sizeof(pfm_default_smpl_entry_t)+(sizeof(unsigned long)*PFM_DEFAULT_MAX_PMDS)) | |
77 | #define PFM_DEFAULT_SMPL_MIN_BUF_SIZE (sizeof(pfm_default_smpl_hdr_t)+PFM_DEFAULT_MAX_ENTRY_SIZE) | |
78 | ||
79 | #define PFM_DEFAULT_SMPL_VERSION_MAJ 2U | |
80 | #define PFM_DEFAULT_SMPL_VERSION_MIN 0U | |
81 | #define PFM_DEFAULT_SMPL_VERSION (((PFM_DEFAULT_SMPL_VERSION_MAJ&0xffff)<<16)|(PFM_DEFAULT_SMPL_VERSION_MIN & 0xffff)) | |
82 | ||
83 | #endif /* __PERFMON_DEFAULT_SMPL_H__ */ |