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 */ 17typedef 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 */ 28typedef 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 */ 37typedef 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 */ 61typedef 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__ */ 84