Release 4.10 tools/perf/builtin-trace.c
/*
* builtin-trace.c
*
* Builtin 'trace' command:
*
* Display a continuously updated trace of any workload, CPU, specific PID,
* system wide, etc. Default format is loosely strace like, but any other
* event may be specified using --event.
*
* Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
*
* Initially based on the 'trace' prototype by Thomas Gleixner:
*
* http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'")
*
* Released under the GPL v2. (and only v2, not any later version)
*/
#include <traceevent/event-parse.h>
#include <api/fs/tracing_path.h>
#include "builtin.h"
#include "util/color.h"
#include "util/debug.h"
#include "util/evlist.h"
#include <subcmd/exec-cmd.h>
#include "util/machine.h"
#include "util/session.h"
#include "util/thread.h"
#include <subcmd/parse-options.h>
#include "util/strlist.h"
#include "util/intlist.h"
#include "util/thread_map.h"
#include "util/stat.h"
#include "trace-event.h"
#include "util/parse-events.h"
#include "util/bpf-loader.h"
#include "callchain.h"
#include "syscalltbl.h"
#include "rb_resort.h"
#include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */
#include <stdlib.h>
#include <linux/err.h>
#include <linux/filter.h>
#include <linux/audit.h>
#include <linux/random.h>
#include <linux/stringify.h>
#include <linux/time64.h>
#ifndef O_CLOEXEC
# define O_CLOEXEC 02000000
#endif
struct trace {
struct perf_tool tool;
struct syscalltbl *sctbl;
struct {
int max;
struct syscall *table;
struct {
struct perf_evsel *sys_enter,
*sys_exit;
}
events;
}
syscalls;
struct record_opts opts;
struct perf_evlist *evlist;
struct machine *host;
struct thread *current;
u64 base_time;
FILE *output;
unsigned long nr_events;
struct strlist *ev_qualifier;
struct {
size_t nr;
int *entries;
}
ev_qualifier_ids;
struct {
size_t nr;
pid_t *entries;
}
filter_pids;
double duration_filter;
double runtime_ms;
struct {
u64 vfs_getname,
proc_getname;
}
stats;
unsigned int max_stack;
unsigned int min_stack;
bool not_ev_qualifier;
bool live;
bool full_time;
bool sched;
bool multiple_threads;
bool summary;
bool summary_only;
bool show_comm;
bool show_tool_stats;
bool trace_syscalls;
bool kernel_syscallchains;
bool force;
bool vfs_getname;
int trace_pgfaults;
int open_id;
};
struct tp_field {
int offset;
union {
u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
};
};
#define TP_UINT_FIELD(bits) \
static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
{ \
u##bits value; \
memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
return value; \
}
TP_UINT_FIELD(8);
TP_UINT_FIELD(16);
TP_UINT_FIELD(32);
TP_UINT_FIELD(64);
#define TP_UINT_FIELD__SWAPPED(bits) \
static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
{ \
u##bits value; \
memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
return bswap_##bits(value);\
}
TP_UINT_FIELD__SWAPPED(16);
TP_UINT_FIELD__SWAPPED(32);
TP_UINT_FIELD__SWAPPED(64);
static int tp_field__init_uint(struct tp_field *field,
struct format_field *format_field,
bool needs_swap)
{
field->offset = format_field->offset;
switch (format_field->size) {
case 1:
field->integer = tp_field__u8;
break;
case 2:
field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
break;
case 4:
field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
break;
case 8:
field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
break;
default:
return -1;
}
return 0;
}
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static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
{
return sample->raw_data + field->offset;
}
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static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
{
field->offset = format_field->offset;
field->pointer = tp_field__ptr;
return 0;
}
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struct syscall_tp {
struct tp_field id;
union {
struct tp_field args, ret;
};
};
static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
struct tp_field *field,
const char *name)
{
struct format_field *format_field = perf_evsel__field(evsel, name);
if (format_field == NULL)
return -1;
return tp_field__init_uint(field, format_field, evsel->needs_swap);
}
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#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
({ struct syscall_tp *sc = evsel->priv;\
perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
struct tp_field *field,
const char *name)
{
struct format_field *format_field = perf_evsel__field(evsel, name);
if (format_field == NULL)
return -1;
return tp_field__init_ptr(field, format_field);
}
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#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
({ struct syscall_tp *sc = evsel->priv;\
perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
static void perf_evsel__delete_priv(struct perf_evsel *evsel)
{
zfree(&evsel->priv);
perf_evsel__delete(evsel);
}
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| Total | 24 | 100.00% | 2 | 100.00% |
static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler)
{
evsel->priv = malloc(sizeof(struct syscall_tp));
if (evsel->priv != NULL) {
if (perf_evsel__init_sc_tp_uint_field(evsel, id))
goto out_delete;
evsel->handler = handler;
return 0;
}
return -ENOMEM;
out_delete:
zfree(&evsel->priv);
return -ENOENT;
}
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| namhyung kim | namhyung kim | 27 | 35.06% | 1 | 33.33% |
| Total | 77 | 100.00% | 3 | 100.00% |
static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler)
{
struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
/* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
if (IS_ERR(evsel))
evsel = perf_evsel__newtp("syscalls", direction);
if (IS_ERR(evsel))
return NULL;
if (perf_evsel__init_syscall_tp(evsel, handler))
goto out_delete;
return evsel;
out_delete:
perf_evsel__delete_priv(evsel);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 44 | 54.32% | 1 | 25.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 14 | 17.28% | 1 | 25.00% |
| david ahern | david ahern | 14 | 17.28% | 1 | 25.00% |
| jiri olsa | jiri olsa | 9 | 11.11% | 1 | 25.00% |
| Total | 81 | 100.00% | 4 | 100.00% |
#define perf_evsel__sc_tp_uint(evsel, name, sample) \
({ struct syscall_tp *fields = evsel->priv; \
fields->name.integer(&fields->name, sample); })
#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
({ struct syscall_tp *fields = evsel->priv; \
fields->name.pointer(&fields->name, sample); })
struct syscall_arg {
unsigned long val;
struct thread *thread;
struct trace *trace;
void *parm;
u8 idx;
u8 mask;
};
struct strarray {
int offset;
int nr_entries;
const char **entries;
};
#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
.nr_entries = ARRAY_SIZE(array), \
.entries = array, \
}
#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
.offset = off, \
.nr_entries = ARRAY_SIZE(array), \
.entries = array, \
}
static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
const char *intfmt,
struct syscall_arg *arg)
{
struct strarray *sa = arg->parm;
int idx = arg->val - sa->offset;
if (idx < 0 || idx >= sa->nr_entries)
return scnprintf(bf, size, intfmt, arg->val);
return scnprintf(bf, size, "%s", sa->entries[idx]);
}
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static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
struct syscall_arg *arg)
{
return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
}
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#define SCA_STRARRAY syscall_arg__scnprintf_strarray
#if defined(__i386__) || defined(__x86_64__)
/*
* FIXME: Make this available to all arches as soon as the ioctl beautifier
* gets rewritten to support all arches.
*/
static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size,
struct syscall_arg *arg)
{
return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg);
}
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#define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray
#endif /* defined(__i386__) || defined(__x86_64__) */
static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
struct syscall_arg *arg);
#define SCA_FD syscall_arg__scnprintf_fd
#ifndef AT_FDCWD
#define AT_FDCWD -100
#endif
static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
struct syscall_arg *arg)
{
int fd = arg->val;
if (fd == AT_FDCWD)
return scnprintf(bf, size, "CWD");
return syscall_arg__scnprintf_fd(bf, size, arg);
}
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#define SCA_FDAT syscall_arg__scnprintf_fd_at
static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
struct syscall_arg *arg);
#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
struct syscall_arg *arg)
{
return scnprintf(bf, size, "%#lx", arg->val);
}
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#define SCA_HEX syscall_arg__scnprintf_hex
static size_t syscall_arg__scnprintf_int(char *bf, size_t size,
struct syscall_arg *arg)
{
return scnprintf(bf, size, "%d", arg->val);
}
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#define SCA_INT syscall_arg__scnprintf_int
static const char *bpf_cmd[] = {
"MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
"MAP_GET_NEXT_KEY", "PROG_LOAD",
};
static DEFINE_STRARRAY(bpf_cmd);
static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
static DEFINE_STRARRAY(itimers);
static const char *keyctl_options[] = {
"GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
"SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
"INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
"ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
"INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
};
static DEFINE_STRARRAY(keyctl_options);
static const char *whences[] = { "SET", "CUR", "END",
#ifdef SEEK_DATA
"DATA",
#endif
#ifdef SEEK_HOLE
"HOLE",
#endif
};
static DEFINE_STRARRAY(whences);
static const char *fcntl_cmds[] = {
"DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
"SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64",
"F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX",
"F_GETOWNER_UIDS",
};
static DEFINE_STRARRAY(fcntl_cmds);
static const char *rlimit_resources[] = {
"CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
"MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
"RTTIME",
};
static DEFINE_STRARRAY(rlimit_resources);
static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
static DEFINE_STRARRAY(sighow);
static const char *clockid[] = {
"REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
"MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
"REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
};
static DEFINE_STRARRAY(clockid);
static const char *socket_families[] = {
"UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
"BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
"SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
"RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
"BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
"ALG", "NFC", "VSOCK",
};
static DEFINE_STRARRAY(socket_families);
static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
struct syscall_arg *arg)
{
size_t printed = 0;
int mode = arg->val;
if (mode == F_OK) /* 0 */
return scnprintf(bf, size, "F");
#define P_MODE(n) \
if (mode & n##_OK) { \
printed += scnprintf(bf + printed, size - printed, "%s", #n); \
mode &= ~n##_OK; \
}
P_MODE(R);
P_MODE(W);
P_MODE(X);
#undef P_MODE
if (mode)
printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
return printed;
}
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#define SCA_ACCMODE syscall_arg__scnprintf_access_mode
static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
struct syscall_arg *arg);
#define SCA_FILENAME syscall_arg__scnprintf_filename
static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
struct syscall_arg *arg)
{
int printed = 0, flags = arg->val;
#define P_FLAG(n) \
if (flags & O_##n) { \
printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
flags &= ~O_##n; \
}
P_FLAG(CLOEXEC);
P_FLAG(NONBLOCK);
#undef P_FLAG
if (flags)
printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
return printed;
}
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#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
#if defined(__i386__) || defined(__x86_64__)
/*
* FIXME: Make this available to all arches.
*/
#define TCGETS 0x5401
static const char *tioctls[] = {
"TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW",
"TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL",
"TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI",
"TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC",
"TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX",
"TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO",
"TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK",
"TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2",
"TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
"TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG",
"TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL",
[0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
"TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
"TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
"TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE",
};
static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401);
#endif /* defined(__i386__) || defined(__x86_64__) */
#ifndef GRND_NONBLOCK
#define GRND_NONBLOCK 0x0001
#endif
#ifndef GRND_RANDOM
#define GRND_RANDOM 0x0002
#endif
static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
struct syscall_arg *arg)
{
int printed = 0, flags = arg->val;
#define P_FLAG(n) \
if (flags & GRND_##n) { \
printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
flags &= ~GRND_##n; \
}
P_FLAG(RANDOM);
P_FLAG(NONBLOCK);
#undef P_FLAG
if (flags)
printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
return printed;
}
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| arnaldo carvalho de melo | arnaldo carvalho de melo | 80 | 100.00% | 1 | 100.00% |
| Total | 80 | 100.00% | 1 | 100.00% |
#define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
#define STRARRAY(arg, name, array) \
.arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
.arg_parm = { [arg] = &strarray__##array, }
#include "trace/beauty/eventfd.c"
#include "trace/beauty/flock.c"
#include "trace/beauty/futex_op.c"
#include "trace/beauty/mmap.c"
#include "trace/beauty/mode_t.c"
#include "trace/beauty/msg_flags.c"
#include "trace/beauty/open_flags.c"
#include "trace/beauty/perf_event_open.c"
#include "trace/beauty/pid.c"
#include "trace/beauty/sched_policy.c"
#include "trace/beauty/seccomp.c"
#include "trace/beauty/signum.c"
#include "trace/beauty/socket_type.c"
#include "trace/beauty/waitid_options.c"
static struct syscall_fmt {
const char *name;
const char *alias;
size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg);
void *arg_parm[6];
bool errmsg;
bool errpid;
bool timeout;
bool hexret;
}
syscall_fmts[] = {
{ .name = "access", .errmsg = true,
.arg_scnprintf = { [1] = SCA_ACCMODE, /* mode */ }, },
{ .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
{ .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), },
{ .name = "brk", .hexret = true,
.arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
{ .name = "chdir", .errmsg = true, },
{ .name = "chmod", .errmsg = true, },
{ .name = "chroot", .errmsg = true, },
{ .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), },
{ .name = "clone", .errpid = true, },
{ .name = "close", .errmsg = true,
.arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, },
{ .name = "connect", .errmsg = true, },
{ .name = "creat", .errmsg = true, },
{ .name = "dup", .errmsg = true, },
{ .name = "dup2", .errmsg = true, },
{ .name = "dup3", .errmsg = true, },
{ .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), },
{ .name = "eventfd2", .errmsg = true,
.arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
{ .name = "faccessat", .errmsg = true, },
{ .name = "fadvise64", .errmsg = true, },
{ .name = "fallocate", .errmsg = true, },
{ .name = "fchdir", .errmsg = true, },
{ .name = "fchmod", .errmsg = true, },
{ .name = "fchmodat", .errmsg = true,
.arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
{ .name = "fchown", .errmsg = true, },
{ .name = "fchownat", .errmsg = true,
.arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
{ .name = "fcntl", .errmsg = true,
.arg_scnprintf = { [1] =