arch/ia64/include/uapi/asm/perfmon_default_smpl.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2002-2003 Hewlett-Packard Co
   4  *               Stephane Eranian <eranian@hpl.hp.com>
   5  *
   6  * This file implements the default sampling buffer format
   7  * for Linux/ia64 perfmon subsystem.
   8  */
   9 #ifndef __PERFMON_DEFAULT_SMPL_H__
  10 #define __PERFMON_DEFAULT_SMPL_H__ 1
  11
  12 #define PFM_DEFAULT_SMPL_UUID { \
  13                 0x4d, 0x72, 0xbe, 0xc0, 0x06, 0x64, 0x41, 0x43, 0x82, 0xb4, 0xd3, 0xfd, 0x27, 0x24, 0x3c, 0x97}
  14
  15 /*
  16  * format specific parameters (passed at context creation)
  17  */
  18 typedef struct {
  19         unsigned long buf_size;         /* size of the buffer in bytes */
  20         unsigned int  flags;            /* buffer specific flags */
  21         unsigned int  res1;             /* for future use */
  22         unsigned long reserved[2];      /* for future use */
  23 } pfm_default_smpl_arg_t;
  24
  25 /*
  26  * combined context+format specific structure. Can be passed
  27  * to PFM_CONTEXT_CREATE
  28  */
  29 typedef struct {
  30         pfarg_context_t         ctx_arg;
  31         pfm_default_smpl_arg_t  buf_arg;
  32 } pfm_default_smpl_ctx_arg_t;
  33
  34 /*
  35  * This header is at the beginning of the sampling buffer returned to the user.
  36  * It is directly followed by the first record.
  37  */
  38 typedef struct {
  39         unsigned long   hdr_count;              /* how many valid entries */
  40         unsigned long   hdr_cur_offs;           /* current offset from top of buffer */
  41         unsigned long   hdr_reserved2;          /* reserved for future use */
  42
  43         unsigned long   hdr_overflows;          /* how many times the buffer overflowed */
  44         unsigned long   hdr_buf_size;           /* how many bytes in the buffer */
  45
  46         unsigned int    hdr_version;            /* contains perfmon version (smpl format diffs) */
  47         unsigned int    hdr_reserved1;          /* for future use */
  48         unsigned long   hdr_reserved[10];       /* for future use */
  49 } pfm_default_smpl_hdr_t;
  50
  51 /*
  52  * Entry header in the sampling buffer.  The header is directly followed
  53  * with the values of the PMD registers of interest saved in increasing
  54  * index order: PMD4, PMD5, and so on. How many PMDs are present depends
  55  * on how the session was programmed.
  56  *
  57  * In the case where multiple counters overflow at the same time, multiple
  58  * entries are written consecutively.
  59  *
  60  * last_reset_value member indicates the initial value of the overflowed PMD.
  61  */
  62 typedef struct {
  63         int             pid;                    /* thread id (for NPTL, this is gettid()) */
  64         unsigned char   reserved1[3];           /* reserved for future use */
  65         unsigned char   ovfl_pmd;               /* index of overflowed PMD */
  66
  67         unsigned long   last_reset_val;         /* initial value of overflowed PMD */
  68         unsigned long   ip;                     /* where did the overflow interrupt happened  */
  69         unsigned long   tstamp;                 /* ar.itc when entering perfmon intr. handler */
  70
  71         unsigned short  cpu;                    /* cpu on which the overflow occurred */
  72         unsigned short  set;                    /* event set active when overflow occurred   */
  73         int             tgid;                   /* thread group id (for NPTL, this is getpid()) */
  74 } pfm_default_smpl_entry_t;
  75
  76 #define PFM_DEFAULT_MAX_PMDS            64 /* how many pmds supported by data structures (sizeof(unsigned long) */
  77 #define PFM_DEFAULT_MAX_ENTRY_SIZE      (sizeof(pfm_default_smpl_entry_t)+(sizeof(unsigned long)*PFM_DEFAULT_MAX_PMDS))
  78 #define PFM_DEFAULT_SMPL_MIN_BUF_SIZE   (sizeof(pfm_default_smpl_hdr_t)+PFM_DEFAULT_MAX_ENTRY_SIZE)
  79
  80 #define PFM_DEFAULT_SMPL_VERSION_MAJ    2U
  81 #define PFM_DEFAULT_SMPL_VERSION_MIN    0U
  82 #define PFM_DEFAULT_SMPL_VERSION        (((PFM_DEFAULT_SMPL_VERSION_MAJ&0xffff)<<16)|(PFM_DEFAULT_SMPL_VERSION_MIN & 0xffff))
  83
  84 #endif /* __PERFMON_DEFAULT_SMPL_H__ */