perf probe: Move probe event utility functions to probe-event.c
Split probe event (kprobe-events and perf probe events) utility functions from builtin-probe.c to probe-event.c. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091201001958.10235.90243.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
parent
934b1f5fd0
commit
50656eec82
|
@ -370,6 +370,7 @@ LIB_H += util/hist.h
|
|||
LIB_H += util/thread.h
|
||||
LIB_H += util/data_map.h
|
||||
LIB_H += util/probe-finder.h
|
||||
LIB_H += util/probe-event.h
|
||||
|
||||
LIB_OBJS += util/abspath.o
|
||||
LIB_OBJS += util/alias.o
|
||||
|
@ -412,6 +413,7 @@ LIB_OBJS += util/svghelper.o
|
|||
LIB_OBJS += util/sort.o
|
||||
LIB_OBJS += util/hist.o
|
||||
LIB_OBJS += util/data_map.o
|
||||
LIB_OBJS += util/probe-event.o
|
||||
|
||||
BUILTIN_OBJS += builtin-annotate.o
|
||||
|
||||
|
|
|
@ -40,6 +40,7 @@
|
|||
#include "util/parse-options.h"
|
||||
#include "util/parse-events.h" /* For debugfs_path */
|
||||
#include "util/probe-finder.h"
|
||||
#include "util/probe-event.h"
|
||||
|
||||
/* Default vmlinux search paths */
|
||||
#define NR_SEARCH_PATH 3
|
||||
|
@ -51,8 +52,6 @@ const char *default_search_path[NR_SEARCH_PATH] = {
|
|||
|
||||
#define MAX_PATH_LEN 256
|
||||
#define MAX_PROBES 128
|
||||
#define MAX_PROBE_ARGS 128
|
||||
#define PERFPROBE_GROUP "probe"
|
||||
|
||||
/* Session management structure */
|
||||
static struct {
|
||||
|
@ -63,155 +62,17 @@ static struct {
|
|||
struct probe_point probes[MAX_PROBES];
|
||||
} session;
|
||||
|
||||
#define semantic_error(msg ...) die("Semantic error :" msg)
|
||||
|
||||
/* Parse probe point. Return 1 if return probe */
|
||||
static void parse_probe_point(char *arg, struct probe_point *pp)
|
||||
{
|
||||
char *ptr, *tmp;
|
||||
char c, nc = 0;
|
||||
/*
|
||||
* <Syntax>
|
||||
* perf probe SRC:LN
|
||||
* perf probe FUNC[+OFFS|%return][@SRC]
|
||||
*/
|
||||
|
||||
ptr = strpbrk(arg, ":+@%");
|
||||
if (ptr) {
|
||||
nc = *ptr;
|
||||
*ptr++ = '\0';
|
||||
}
|
||||
|
||||
/* Check arg is function or file and copy it */
|
||||
if (strchr(arg, '.')) /* File */
|
||||
pp->file = strdup(arg);
|
||||
else /* Function */
|
||||
pp->function = strdup(arg);
|
||||
DIE_IF(pp->file == NULL && pp->function == NULL);
|
||||
|
||||
/* Parse other options */
|
||||
while (ptr) {
|
||||
arg = ptr;
|
||||
c = nc;
|
||||
ptr = strpbrk(arg, ":+@%");
|
||||
if (ptr) {
|
||||
nc = *ptr;
|
||||
*ptr++ = '\0';
|
||||
}
|
||||
switch (c) {
|
||||
case ':': /* Line number */
|
||||
pp->line = strtoul(arg, &tmp, 0);
|
||||
if (*tmp != '\0')
|
||||
semantic_error("There is non-digit charactor"
|
||||
" in line number.");
|
||||
break;
|
||||
case '+': /* Byte offset from a symbol */
|
||||
pp->offset = strtoul(arg, &tmp, 0);
|
||||
if (*tmp != '\0')
|
||||
semantic_error("There is non-digit charactor"
|
||||
" in offset.");
|
||||
break;
|
||||
case '@': /* File name */
|
||||
if (pp->file)
|
||||
semantic_error("SRC@SRC is not allowed.");
|
||||
pp->file = strdup(arg);
|
||||
DIE_IF(pp->file == NULL);
|
||||
if (ptr)
|
||||
semantic_error("@SRC must be the last "
|
||||
"option.");
|
||||
break;
|
||||
case '%': /* Probe places */
|
||||
if (strcmp(arg, "return") == 0) {
|
||||
pp->retprobe = 1;
|
||||
} else /* Others not supported yet */
|
||||
semantic_error("%%%s is not supported.", arg);
|
||||
break;
|
||||
default:
|
||||
DIE_IF("Program has a bug.");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Exclusion check */
|
||||
if (pp->line && pp->offset)
|
||||
semantic_error("Offset can't be used with line number.");
|
||||
if (!pp->line && pp->file && !pp->function)
|
||||
semantic_error("File always requires line number.");
|
||||
if (pp->offset && !pp->function)
|
||||
semantic_error("Offset requires an entry function.");
|
||||
if (pp->retprobe && !pp->function)
|
||||
semantic_error("Return probe requires an entry function.");
|
||||
if ((pp->offset || pp->line) && pp->retprobe)
|
||||
semantic_error("Offset/Line can't be used with return probe.");
|
||||
|
||||
pr_debug("symbol:%s file:%s line:%d offset:%d, return:%d\n",
|
||||
pp->function, pp->file, pp->line, pp->offset, pp->retprobe);
|
||||
}
|
||||
|
||||
/* Parse an event definition. Note that any error must die. */
|
||||
static void parse_probe_event(const char *str)
|
||||
{
|
||||
char *argv[MAX_PROBE_ARGS + 1]; /* probe + args */
|
||||
int argc, i;
|
||||
struct probe_point *pp = &session.probes[session.nr_probe];
|
||||
|
||||
pr_debug("probe-definition(%d): %s\n", session.nr_probe, str);
|
||||
if (++session.nr_probe == MAX_PROBES)
|
||||
semantic_error("Too many probes");
|
||||
die("Too many probes (> %d) are specified.", MAX_PROBES);
|
||||
|
||||
/* Separate arguments, similar to argv_split */
|
||||
argc = 0;
|
||||
do {
|
||||
/* Skip separators */
|
||||
while (isspace(*str))
|
||||
str++;
|
||||
|
||||
/* Add an argument */
|
||||
if (*str != '\0') {
|
||||
const char *s = str;
|
||||
/* Check the limit number of arguments */
|
||||
if (argc == MAX_PROBE_ARGS + 1)
|
||||
semantic_error("Too many arguments");
|
||||
|
||||
/* Skip the argument */
|
||||
while (!isspace(*str) && *str != '\0')
|
||||
str++;
|
||||
|
||||
/* Duplicate the argument */
|
||||
argv[argc] = strndup(s, str - s);
|
||||
if (argv[argc] == NULL)
|
||||
die("strndup");
|
||||
pr_debug("argv[%d]=%s\n", argc, argv[argc]);
|
||||
argc++;
|
||||
|
||||
}
|
||||
} while (*str != '\0');
|
||||
if (!argc)
|
||||
semantic_error("An empty argument.");
|
||||
|
||||
/* Parse probe point */
|
||||
parse_probe_point(argv[0], pp);
|
||||
free(argv[0]);
|
||||
if (pp->file || pp->line)
|
||||
session.need_dwarf = 1;
|
||||
|
||||
/* Copy arguments */
|
||||
pp->nr_args = argc - 1;
|
||||
if (pp->nr_args > 0) {
|
||||
pp->args = (char **)malloc(sizeof(char *) * pp->nr_args);
|
||||
if (!pp->args)
|
||||
die("malloc");
|
||||
memcpy(pp->args, &argv[1], sizeof(char *) * pp->nr_args);
|
||||
}
|
||||
|
||||
/* Ensure return probe has no C argument */
|
||||
for (i = 0; i < pp->nr_args; i++)
|
||||
if (is_c_varname(pp->args[i])) {
|
||||
if (pp->retprobe)
|
||||
semantic_error("You can't specify local"
|
||||
" variable for kretprobe");
|
||||
session.need_dwarf = 1;
|
||||
}
|
||||
/* Parse perf-probe event into probe_point */
|
||||
session.need_dwarf = parse_perf_probe_event(str, pp);
|
||||
|
||||
pr_debug("%d arguments\n", pp->nr_args);
|
||||
}
|
||||
|
@ -288,59 +149,15 @@ static const struct option options[] = {
|
|||
"\t\tALN:\tAbsolute line number in file.\n"
|
||||
"\t\tARG:\tProbe argument (local variable name or\n"
|
||||
#endif
|
||||
"\t\t\tkprobe-tracer argument format is supported.)\n",
|
||||
"\t\t\tkprobe-tracer argument format.)\n",
|
||||
opt_add_probe_event),
|
||||
OPT_END()
|
||||
};
|
||||
|
||||
static int write_new_event(int fd, const char *buf)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = write(fd, buf, strlen(buf));
|
||||
if (ret <= 0)
|
||||
die("Failed to create event.");
|
||||
else
|
||||
printf("Added new event: %s\n", buf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#define MAX_CMDLEN 256
|
||||
|
||||
static int synthesize_probe_event(struct probe_point *pp)
|
||||
{
|
||||
char *buf;
|
||||
int i, len, ret;
|
||||
pp->probes[0] = buf = zalloc(MAX_CMDLEN);
|
||||
if (!buf)
|
||||
die("Failed to allocate memory by zalloc.");
|
||||
ret = snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset);
|
||||
if (ret <= 0 || ret >= MAX_CMDLEN)
|
||||
goto error;
|
||||
len = ret;
|
||||
|
||||
for (i = 0; i < pp->nr_args; i++) {
|
||||
ret = snprintf(&buf[len], MAX_CMDLEN - len, " %s",
|
||||
pp->args[i]);
|
||||
if (ret <= 0 || ret >= MAX_CMDLEN - len)
|
||||
goto error;
|
||||
len += ret;
|
||||
}
|
||||
pp->found = 1;
|
||||
return pp->found;
|
||||
error:
|
||||
free(pp->probes[0]);
|
||||
if (ret > 0)
|
||||
ret = -E2BIG;
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cmd_probe(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
int i, j, fd, ret;
|
||||
struct probe_point *pp;
|
||||
char buf[MAX_CMDLEN];
|
||||
|
||||
argc = parse_options(argc, argv, options, probe_usage,
|
||||
PARSE_OPT_STOP_AT_NON_OPTION);
|
||||
|
@ -352,7 +169,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
|
|||
|
||||
if (session.need_dwarf)
|
||||
#ifdef NO_LIBDWARF
|
||||
semantic_error("Debuginfo-analysis is not supported");
|
||||
die("Debuginfo-analysis is not supported");
|
||||
#else /* !NO_LIBDWARF */
|
||||
pr_debug("Some probes require debuginfo.\n");
|
||||
|
||||
|
@ -398,41 +215,15 @@ end_dwarf:
|
|||
if (pp->found) /* This probe is already found. */
|
||||
continue;
|
||||
|
||||
ret = synthesize_probe_event(pp);
|
||||
ret = synthesize_trace_kprobe_event(pp);
|
||||
if (ret == -E2BIG)
|
||||
semantic_error("probe point is too long.");
|
||||
die("probe point definition becomes too long.");
|
||||
else if (ret < 0)
|
||||
die("Failed to synthesize a probe point.");
|
||||
}
|
||||
|
||||
/* Settng up probe points */
|
||||
snprintf(buf, MAX_CMDLEN, "%s/../kprobe_events", debugfs_path);
|
||||
fd = open(buf, O_WRONLY, O_APPEND);
|
||||
if (fd < 0) {
|
||||
if (errno == ENOENT)
|
||||
die("kprobe_events file does not exist - please rebuild with CONFIG_KPROBE_TRACER.");
|
||||
else
|
||||
die("Could not open kprobe_events file: %s",
|
||||
strerror(errno));
|
||||
}
|
||||
for (j = 0; j < session.nr_probe; j++) {
|
||||
pp = &session.probes[j];
|
||||
if (pp->found == 1) {
|
||||
snprintf(buf, MAX_CMDLEN, "%c:%s/%s_%x %s\n",
|
||||
pp->retprobe ? 'r' : 'p', PERFPROBE_GROUP,
|
||||
pp->function, pp->offset, pp->probes[0]);
|
||||
write_new_event(fd, buf);
|
||||
} else
|
||||
for (i = 0; i < pp->found; i++) {
|
||||
snprintf(buf, MAX_CMDLEN, "%c:%s/%s_%x_%d %s\n",
|
||||
pp->retprobe ? 'r' : 'p',
|
||||
PERFPROBE_GROUP,
|
||||
pp->function, pp->offset, i,
|
||||
pp->probes[i]);
|
||||
write_new_event(fd, buf);
|
||||
}
|
||||
}
|
||||
close(fd);
|
||||
add_trace_kprobe_events(session.probes, session.nr_probe);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
273
tools/perf/util/probe-event.c
Normal file
273
tools/perf/util/probe-event.c
Normal file
|
@ -0,0 +1,273 @@
|
|||
/*
|
||||
* probe-event.c : perf-probe definition to kprobe_events format converter
|
||||
*
|
||||
* Written by Masami Hiramatsu <mhiramat@redhat.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#define _GNU_SOURCE
|
||||
#include <sys/utsname.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#undef _GNU_SOURCE
|
||||
#include "event.h"
|
||||
#include "debug.h"
|
||||
#include "parse-events.h" /* For debugfs_path */
|
||||
#include "probe-event.h"
|
||||
|
||||
#define MAX_CMDLEN 256
|
||||
#define MAX_PROBE_ARGS 128
|
||||
#define PERFPROBE_GROUP "probe"
|
||||
|
||||
#define semantic_error(msg ...) die("Semantic error :" msg)
|
||||
|
||||
/* Parse probepoint definition. */
|
||||
static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp)
|
||||
{
|
||||
char *ptr, *tmp;
|
||||
char c, nc = 0;
|
||||
/*
|
||||
* <Syntax>
|
||||
* perf probe SRC:LN
|
||||
* perf probe FUNC[+OFFS|%return][@SRC]
|
||||
*/
|
||||
|
||||
ptr = strpbrk(arg, ":+@%");
|
||||
if (ptr) {
|
||||
nc = *ptr;
|
||||
*ptr++ = '\0';
|
||||
}
|
||||
|
||||
/* Check arg is function or file and copy it */
|
||||
if (strchr(arg, '.')) /* File */
|
||||
pp->file = strdup(arg);
|
||||
else /* Function */
|
||||
pp->function = strdup(arg);
|
||||
DIE_IF(pp->file == NULL && pp->function == NULL);
|
||||
|
||||
/* Parse other options */
|
||||
while (ptr) {
|
||||
arg = ptr;
|
||||
c = nc;
|
||||
ptr = strpbrk(arg, ":+@%");
|
||||
if (ptr) {
|
||||
nc = *ptr;
|
||||
*ptr++ = '\0';
|
||||
}
|
||||
switch (c) {
|
||||
case ':': /* Line number */
|
||||
pp->line = strtoul(arg, &tmp, 0);
|
||||
if (*tmp != '\0')
|
||||
semantic_error("There is non-digit charactor"
|
||||
" in line number.");
|
||||
break;
|
||||
case '+': /* Byte offset from a symbol */
|
||||
pp->offset = strtoul(arg, &tmp, 0);
|
||||
if (*tmp != '\0')
|
||||
semantic_error("There is non-digit charactor"
|
||||
" in offset.");
|
||||
break;
|
||||
case '@': /* File name */
|
||||
if (pp->file)
|
||||
semantic_error("SRC@SRC is not allowed.");
|
||||
pp->file = strdup(arg);
|
||||
DIE_IF(pp->file == NULL);
|
||||
if (ptr)
|
||||
semantic_error("@SRC must be the last "
|
||||
"option.");
|
||||
break;
|
||||
case '%': /* Probe places */
|
||||
if (strcmp(arg, "return") == 0) {
|
||||
pp->retprobe = 1;
|
||||
} else /* Others not supported yet */
|
||||
semantic_error("%%%s is not supported.", arg);
|
||||
break;
|
||||
default:
|
||||
DIE_IF("Program has a bug.");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Exclusion check */
|
||||
if (pp->line && pp->offset)
|
||||
semantic_error("Offset can't be used with line number.");
|
||||
|
||||
if (!pp->line && pp->file && !pp->function)
|
||||
semantic_error("File always requires line number.");
|
||||
|
||||
if (pp->offset && !pp->function)
|
||||
semantic_error("Offset requires an entry function.");
|
||||
|
||||
if (pp->retprobe && !pp->function)
|
||||
semantic_error("Return probe requires an entry function.");
|
||||
|
||||
if ((pp->offset || pp->line) && pp->retprobe)
|
||||
semantic_error("Offset/Line can't be used with return probe.");
|
||||
|
||||
pr_debug("symbol:%s file:%s line:%d offset:%d, return:%d\n",
|
||||
pp->function, pp->file, pp->line, pp->offset, pp->retprobe);
|
||||
}
|
||||
|
||||
/* Parse perf-probe event definition */
|
||||
int parse_perf_probe_event(const char *str, struct probe_point *pp)
|
||||
{
|
||||
char *argv[MAX_PROBE_ARGS + 1]; /* probe + args */
|
||||
int argc, i, need_dwarf = 0;
|
||||
|
||||
/* Separate arguments, similar to argv_split */
|
||||
argc = 0;
|
||||
do {
|
||||
/* Skip separators */
|
||||
while (isspace(*str))
|
||||
str++;
|
||||
|
||||
/* Add an argument */
|
||||
if (*str != '\0') {
|
||||
const char *s = str;
|
||||
/* Check the limit number of arguments */
|
||||
if (argc == MAX_PROBE_ARGS + 1)
|
||||
semantic_error("Too many arguments");
|
||||
|
||||
/* Skip the argument */
|
||||
while (!isspace(*str) && *str != '\0')
|
||||
str++;
|
||||
|
||||
/* Duplicate the argument */
|
||||
argv[argc] = strndup(s, str - s);
|
||||
if (argv[argc] == NULL)
|
||||
die("strndup");
|
||||
pr_debug("argv[%d]=%s\n", argc, argv[argc]);
|
||||
argc++;
|
||||
}
|
||||
} while (*str != '\0');
|
||||
if (!argc)
|
||||
semantic_error("An empty argument.");
|
||||
|
||||
/* Parse probe point */
|
||||
parse_perf_probe_probepoint(argv[0], pp);
|
||||
free(argv[0]);
|
||||
if (pp->file || pp->line)
|
||||
need_dwarf = 1;
|
||||
|
||||
/* Copy arguments */
|
||||
pp->nr_args = argc - 1;
|
||||
if (pp->nr_args > 0) {
|
||||
pp->args = (char **)malloc(sizeof(char *) * pp->nr_args);
|
||||
if (!pp->args)
|
||||
die("malloc");
|
||||
memcpy(pp->args, &argv[1], sizeof(char *) * pp->nr_args);
|
||||
}
|
||||
|
||||
/* Ensure return probe has no C argument */
|
||||
for (i = 0; i < pp->nr_args; i++)
|
||||
if (is_c_varname(pp->args[i])) {
|
||||
if (pp->retprobe)
|
||||
semantic_error("You can't specify local"
|
||||
" variable for kretprobe");
|
||||
need_dwarf = 1;
|
||||
}
|
||||
|
||||
return need_dwarf;
|
||||
}
|
||||
|
||||
int synthesize_trace_kprobe_event(struct probe_point *pp)
|
||||
{
|
||||
char *buf;
|
||||
int i, len, ret;
|
||||
|
||||
pp->probes[0] = buf = zalloc(MAX_CMDLEN);
|
||||
if (!buf)
|
||||
die("Failed to allocate memory by zalloc.");
|
||||
ret = snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset);
|
||||
if (ret <= 0 || ret >= MAX_CMDLEN)
|
||||
goto error;
|
||||
len = ret;
|
||||
|
||||
for (i = 0; i < pp->nr_args; i++) {
|
||||
ret = snprintf(&buf[len], MAX_CMDLEN - len, " %s",
|
||||
pp->args[i]);
|
||||
if (ret <= 0 || ret >= MAX_CMDLEN - len)
|
||||
goto error;
|
||||
len += ret;
|
||||
}
|
||||
pp->found = 1;
|
||||
|
||||
return pp->found;
|
||||
error:
|
||||
free(pp->probes[0]);
|
||||
if (ret > 0)
|
||||
ret = -E2BIG;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int write_trace_kprobe_event(int fd, const char *buf)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = write(fd, buf, strlen(buf));
|
||||
if (ret <= 0)
|
||||
die("Failed to create event.");
|
||||
else
|
||||
printf("Added new event: %s\n", buf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void add_trace_kprobe_events(struct probe_point *probes, int nr_probes)
|
||||
{
|
||||
int i, j, fd;
|
||||
struct probe_point *pp;
|
||||
char buf[MAX_CMDLEN];
|
||||
|
||||
snprintf(buf, MAX_CMDLEN, "%s/../kprobe_events", debugfs_path);
|
||||
fd = open(buf, O_WRONLY, O_APPEND);
|
||||
if (fd < 0) {
|
||||
if (errno == ENOENT)
|
||||
die("kprobe_events file does not exist -"
|
||||
" please rebuild with CONFIG_KPROBE_TRACER.");
|
||||
else
|
||||
die("Could not open kprobe_events file: %s",
|
||||
strerror(errno));
|
||||
}
|
||||
|
||||
for (j = 0; j < nr_probes; j++) {
|
||||
pp = probes + j;
|
||||
if (pp->found == 1) {
|
||||
snprintf(buf, MAX_CMDLEN, "%c:%s/%s_%x %s\n",
|
||||
pp->retprobe ? 'r' : 'p', PERFPROBE_GROUP,
|
||||
pp->function, pp->offset, pp->probes[0]);
|
||||
write_trace_kprobe_event(fd, buf);
|
||||
} else
|
||||
for (i = 0; i < pp->found; i++) {
|
||||
snprintf(buf, MAX_CMDLEN, "%c:%s/%s_%x_%d %s\n",
|
||||
pp->retprobe ? 'r' : 'p',
|
||||
PERFPROBE_GROUP,
|
||||
pp->function, pp->offset, i,
|
||||
pp->probes[i]);
|
||||
write_trace_kprobe_event(fd, buf);
|
||||
}
|
||||
}
|
||||
close(fd);
|
||||
}
|
10
tools/perf/util/probe-event.h
Normal file
10
tools/perf/util/probe-event.h
Normal file
|
@ -0,0 +1,10 @@
|
|||
#ifndef _PROBE_EVENT_H
|
||||
#define _PROBE_EVENT_H
|
||||
|
||||
#include "probe-finder.h"
|
||||
|
||||
extern int parse_perf_probe_event(const char *str, struct probe_point *pp);
|
||||
extern int synthesize_trace_kprobe_event(struct probe_point *pp);
|
||||
extern void add_trace_kprobe_events(struct probe_point *probes, int nr_probes);
|
||||
|
||||
#endif /*_PROBE_EVENT_H */
|
Loading…
Reference in a new issue