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/*
* Copyright (C) 2002-2003 Hewlett-Packard Co
* Stephane Eranian <eranian@hpl.hp.com>
*
* This file implements the default sampling buffer format
* for Linux/ia64 perfmon subsystem.
*/
#ifndef __PERFMON_DEFAULT_SMPL_H__
#define __PERFMON_DEFAULT_SMPL_H__ 1
#define PFM_DEFAULT_SMPL_UUID { \
0x4d, 0x72, 0xbe, 0xc0, 0x06, 0x64, 0x41, 0x43, 0x82, 0xb4, 0xd3, 0xfd, 0x27, 0x24, 0x3c, 0x97}
/*
* format specific parameters (passed at context creation)
*/
typedef struct {
unsigned long buf_size; /* size of the buffer in bytes */
unsigned int flags; /* buffer specific flags */
unsigned int res1; /* for future use */
unsigned long reserved[2]; /* for future use */
} pfm_default_smpl_arg_t;
/*
* combined context+format specific structure. Can be passed
* to PFM_CONTEXT_CREATE
*/
typedef struct {
pfarg_context_t ctx_arg;
pfm_default_smpl_arg_t buf_arg;
} pfm_default_smpl_ctx_arg_t;
/*
* This header is at the beginning of the sampling buffer returned to the user.
* It is directly followed by the first record.
*/
typedef struct {
unsigned long hdr_count; /* how many valid entries */
unsigned long hdr_cur_offs; /* current offset from top of buffer */
unsigned long hdr_reserved2; /* reserved for future use */
unsigned long hdr_overflows; /* how many times the buffer overflowed */
unsigned long hdr_buf_size; /* how many bytes in the buffer */
unsigned int hdr_version; /* contains perfmon version (smpl format diffs) */
unsigned int hdr_reserved1; /* for future use */
unsigned long hdr_reserved[10]; /* for future use */
} pfm_default_smpl_hdr_t;
/*
* Entry header in the sampling buffer. The header is directly followed
* with the values of the PMD registers of interest saved in increasing
* index order: PMD4, PMD5, and so on. How many PMDs are present depends
* on how the session was programmed.
*
* In the case where multiple counters overflow at the same time, multiple
* entries are written consecutively.
*
* last_reset_value member indicates the initial value of the overflowed PMD.
*/
typedef struct {
int pid; /* thread id (for NPTL, this is gettid()) */
unsigned char reserved1[3]; /* reserved for future use */
unsigned char ovfl_pmd; /* index of overflowed PMD */
unsigned long last_reset_val; /* initial value of overflowed PMD */
unsigned long ip; /* where did the overflow interrupt happened */
unsigned long tstamp; /* ar.itc when entering perfmon intr. handler */
unsigned short cpu; /* cpu on which the overflow occurred */
unsigned short set; /* event set active when overflow occurred */
int tgid; /* thread group id (for NPTL, this is getpid()) */
} pfm_default_smpl_entry_t;
#define PFM_DEFAULT_MAX_PMDS 64 /* how many pmds supported by data structures (sizeof(unsigned long) */
#define PFM_DEFAULT_MAX_ENTRY_SIZE (sizeof(pfm_default_smpl_entry_t)+(sizeof(unsigned long)*PFM_DEFAULT_MAX_PMDS))
#define PFM_DEFAULT_SMPL_MIN_BUF_SIZE (sizeof(pfm_default_smpl_hdr_t)+PFM_DEFAULT_MAX_ENTRY_SIZE)
#define PFM_DEFAULT_SMPL_VERSION_MAJ 2U
#define PFM_DEFAULT_SMPL_VERSION_MIN 0U
#define PFM_DEFAULT_SMPL_VERSION (((PFM_DEFAULT_SMPL_VERSION_MAJ&0xffff)<<16)|(PFM_DEFAULT_SMPL_VERSION_MIN & 0xffff))
#endif /* __PERFMON_DEFAULT_SMPL_H__ */