/* * 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__ */