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f-stack/freebsd/sys/pmclog.h

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/*-
* Copyright (c) 2005-2007, Joseph Koshy
* Copyright (c) 2007 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by A. Joseph Koshy under
* sponsorship from the FreeBSD Foundation and Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_PMCLOG_H_
#define _SYS_PMCLOG_H_
#include <sys/pmc.h>
enum pmclog_type {
/* V1 ABI */
PMCLOG_TYPE_CLOSELOG,
PMCLOG_TYPE_DROPNOTIFY,
PMCLOG_TYPE_INITIALIZE,
PMCLOG_TYPE_MAPPINGCHANGE, /* unused in v1 */
PMCLOG_TYPE_PCSAMPLE,
PMCLOG_TYPE_PMCALLOCATE,
PMCLOG_TYPE_PMCATTACH,
PMCLOG_TYPE_PMCDETACH,
PMCLOG_TYPE_PROCCSW,
PMCLOG_TYPE_PROCEXEC,
PMCLOG_TYPE_PROCEXIT,
PMCLOG_TYPE_PROCFORK,
PMCLOG_TYPE_SYSEXIT,
PMCLOG_TYPE_USERDATA,
/*
* V2 ABI
*
* The MAP_{IN,OUT} event types obsolete the MAPPING_CHANGE
* event type. The CALLCHAIN event type obsoletes the
* PCSAMPLE event type.
*/
PMCLOG_TYPE_MAP_IN,
PMCLOG_TYPE_MAP_OUT,
PMCLOG_TYPE_CALLCHAIN,
/*
* V3 ABI
*
* New variant of PMCLOG_TYPE_PMCALLOCATE for dynamic event.
*/
PMCLOG_TYPE_PMCALLOCATEDYN
};
/*
* A log entry descriptor comprises of a 32 bit header and a 64 bit
* time stamp followed by as many 32 bit words are required to record
* the event.
*
* Header field format:
*
* 31 24 16 0
* +------------+------------+-----------------------------------+
* | MAGIC | TYPE | LENGTH |
* +------------+------------+-----------------------------------+
*
* MAGIC is the constant PMCLOG_HEADER_MAGIC.
* TYPE contains a value of type enum pmclog_type.
* LENGTH contains the length of the event record, in bytes.
*/
#define PMCLOG_ENTRY_HEADER \
uint32_t pl_header; \
uint32_t pl_ts_sec; \
uint32_t pl_ts_nsec;
/*
* The following structures are used to describe the size of each kind
* of log entry to sizeof(). To keep the compiler from adding
* padding, the fields of each structure are aligned to their natural
* boundaries, and the structures are marked as 'packed'.
*
* The actual reading and writing of the log file is always in terms
* of 4 byte quantities.
*/
struct pmclog_callchain {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
uint32_t pl_pmcid;
uint32_t pl_cpuflags;
/* 8 byte aligned */
uintptr_t pl_pc[PMC_CALLCHAIN_DEPTH_MAX];
} __packed;
#define PMC_CALLCHAIN_CPUFLAGS_TO_CPU(CF) (((CF) >> 16) & 0xFFFF)
#define PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(CF) ((CF) & PMC_CC_F_USERSPACE)
#define PMC_CALLCHAIN_TO_CPUFLAGS(CPU,FLAGS) \
(((CPU) << 16) | ((FLAGS) & 0xFFFF))
struct pmclog_closelog {
PMCLOG_ENTRY_HEADER
};
struct pmclog_dropnotify {
PMCLOG_ENTRY_HEADER
};
struct pmclog_initialize {
PMCLOG_ENTRY_HEADER
uint32_t pl_version; /* driver version */
uint32_t pl_cpu; /* enum pmc_cputype */
} __packed;
struct pmclog_map_in {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
uintfptr_t pl_start; /* 8 byte aligned */
char pl_pathname[PATH_MAX];
} __packed;
struct pmclog_map_out {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
uintfptr_t pl_start; /* 8 byte aligned */
uintfptr_t pl_end;
} __packed;
struct pmclog_pcsample {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
uintfptr_t pl_pc; /* 8 byte aligned */
uint32_t pl_pmcid;
uint32_t pl_usermode;
} __packed;
struct pmclog_pmcallocate {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint32_t pl_event;
uint32_t pl_flags;
} __packed;
struct pmclog_pmcattach {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint32_t pl_pid;
char pl_pathname[PATH_MAX];
} __packed;
struct pmclog_pmcdetach {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint32_t pl_pid;
} __packed;
struct pmclog_proccsw {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint64_t pl_value; /* keep 8 byte aligned */
uint32_t pl_pid;
} __packed;
struct pmclog_procexec {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
uintfptr_t pl_start; /* keep 8 byte aligned */
uint32_t pl_pmcid;
char pl_pathname[PATH_MAX];
} __packed;
struct pmclog_procexit {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint64_t pl_value; /* keep 8 byte aligned */
uint32_t pl_pid;
} __packed;
struct pmclog_procfork {
PMCLOG_ENTRY_HEADER
uint32_t pl_oldpid;
uint32_t pl_newpid;
} __packed;
struct pmclog_sysexit {
PMCLOG_ENTRY_HEADER
uint32_t pl_pid;
} __packed;
struct pmclog_userdata {
PMCLOG_ENTRY_HEADER
uint32_t pl_userdata;
} __packed;
struct pmclog_pmcallocatedyn {
PMCLOG_ENTRY_HEADER
uint32_t pl_pmcid;
uint32_t pl_event;
uint32_t pl_flags;
char pl_evname[PMC_NAME_MAX];
} __packed;
union pmclog_entry { /* only used to size scratch areas */
struct pmclog_callchain pl_cc;
struct pmclog_closelog pl_cl;
struct pmclog_dropnotify pl_dn;
struct pmclog_initialize pl_i;
struct pmclog_map_in pl_mi;
struct pmclog_map_out pl_mo;
struct pmclog_pcsample pl_s;
struct pmclog_pmcallocate pl_a;
struct pmclog_pmcallocatedyn pl_ad;
struct pmclog_pmcattach pl_t;
struct pmclog_pmcdetach pl_d;
struct pmclog_proccsw pl_c;
struct pmclog_procexec pl_x;
struct pmclog_procexit pl_e;
struct pmclog_procfork pl_f;
struct pmclog_sysexit pl_se;
struct pmclog_userdata pl_u;
};
#define PMCLOG_HEADER_MAGIC 0xEEU
#define PMCLOG_HEADER_TO_LENGTH(H) \
((H) & 0x0000FFFF)
#define PMCLOG_HEADER_TO_TYPE(H) \
(((H) & 0x00FF0000) >> 16)
#define PMCLOG_HEADER_TO_MAGIC(H) \
(((H) & 0xFF000000) >> 24)
#define PMCLOG_HEADER_CHECK_MAGIC(H) \
(PMCLOG_HEADER_TO_MAGIC(H) == PMCLOG_HEADER_MAGIC)
#ifdef _KERNEL
/*
* Prototypes
*/
int pmclog_configure_log(struct pmc_mdep *_md, struct pmc_owner *_po,
int _logfd);
int pmclog_deconfigure_log(struct pmc_owner *_po);
int pmclog_flush(struct pmc_owner *_po);
int pmclog_close(struct pmc_owner *_po);
void pmclog_initialize(void);
void pmclog_process_callchain(struct pmc *_pm, struct pmc_sample *_ps);
void pmclog_process_closelog(struct pmc_owner *po);
void pmclog_process_dropnotify(struct pmc_owner *po);
void pmclog_process_map_in(struct pmc_owner *po, pid_t pid,
uintfptr_t start, const char *path);
void pmclog_process_map_out(struct pmc_owner *po, pid_t pid,
uintfptr_t start, uintfptr_t end);
void pmclog_process_pmcallocate(struct pmc *_pm);
void pmclog_process_pmcattach(struct pmc *_pm, pid_t _pid, char *_path);
void pmclog_process_pmcdetach(struct pmc *_pm, pid_t _pid);
void pmclog_process_proccsw(struct pmc *_pm, struct pmc_process *_pp,
pmc_value_t _v);
void pmclog_process_procexec(struct pmc_owner *_po, pmc_id_t _pmid, pid_t _pid,
uintfptr_t _startaddr, char *_path);
void pmclog_process_procexit(struct pmc *_pm, struct pmc_process *_pp);
void pmclog_process_procfork(struct pmc_owner *_po, pid_t _oldpid, pid_t _newpid);
void pmclog_process_sysexit(struct pmc_owner *_po, pid_t _pid);
int pmclog_process_userlog(struct pmc_owner *_po,
struct pmc_op_writelog *_wl);
void pmclog_shutdown(void);
#endif /* _KERNEL */
#endif /* _SYS_PMCLOG_H_ */
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