summaryrefslogtreecommitdiff
path: root/tools/perf/util
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/data_map.c4
-rw-r--r--tools/perf/util/data_map.h2
-rw-r--r--tools/perf/util/event.c67
-rw-r--r--tools/perf/util/event.h17
-rw-r--r--tools/perf/util/header.c9
-rw-r--r--tools/perf/util/parse-events.c17
-rw-r--r--tools/perf/util/parse-options.c3
-rw-r--r--tools/perf/util/probe-event.c133
-rw-r--r--tools/perf/util/probe-event.h1
-rw-r--r--tools/perf/util/probe-finder.c2
-rw-r--r--tools/perf/util/symbol.c5
-rw-r--r--tools/perf/util/trace-event-parse.c4
-rw-r--r--tools/perf/util/trace-event-perl.c67
-rw-r--r--tools/perf/util/trace-event-perl.h4
-rw-r--r--tools/perf/util/trace-event-read.c3
15 files changed, 286 insertions, 52 deletions
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index ca0bedf..59b65d0 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -100,11 +100,11 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
}
}
-int perf_header__read_build_ids(int input, off_t offset, off_t size)
+int perf_header__read_build_ids(int input, u64 offset, u64 size)
{
struct build_id_event bev;
char filename[PATH_MAX];
- off_t limit = offset + size;
+ u64 limit = offset + size;
int err = -1;
while (offset < limit) {
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index 3180ff7..258a87b 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -27,6 +27,6 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
int full_paths,
int *cwdlen,
char **cwd);
-int perf_header__read_build_ids(int input, off_t offset, off_t file_size);
+int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
#endif
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 414b89d..4dcecaf 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -310,3 +310,70 @@ int event__preprocess_sample(const event_t *self, struct addr_location *al,
al->level == 'H' ? "[hypervisor]" : "<not found>");
return 0;
}
+
+int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
+{
+ u64 *array = event->sample.array;
+
+ if (type & PERF_SAMPLE_IP) {
+ data->ip = event->ip.ip;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_TID) {
+ u32 *p = (u32 *)array;
+ data->pid = p[0];
+ data->tid = p[1];
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_TIME) {
+ data->time = *array;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_ADDR) {
+ data->addr = *array;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_ID) {
+ data->id = *array;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_STREAM_ID) {
+ data->stream_id = *array;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_CPU) {
+ u32 *p = (u32 *)array;
+ data->cpu = *p;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_PERIOD) {
+ data->period = *array;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_READ) {
+ pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
+ return -1;
+ }
+
+ if (type & PERF_SAMPLE_CALLCHAIN) {
+ data->callchain = (struct ip_callchain *)array;
+ array += 1 + data->callchain->nr;
+ }
+
+ if (type & PERF_SAMPLE_RAW) {
+ u32 *p = (u32 *)array;
+ data->raw_size = *p;
+ p++;
+ data->raw_data = p;
+ }
+
+ return 0;
+}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index a4cc810..c7a78eef8 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -56,11 +56,25 @@ struct read_event {
u64 id;
};
-struct sample_event{
+struct sample_event {
struct perf_event_header header;
u64 array[];
};
+struct sample_data {
+ u64 ip;
+ u32 pid, tid;
+ u64 time;
+ u64 addr;
+ u64 id;
+ u64 stream_id;
+ u32 cpu;
+ u64 period;
+ struct ip_callchain *callchain;
+ u32 raw_size;
+ void *raw_data;
+};
+
#define BUILD_ID_SIZE 20
struct build_id_event {
@@ -155,5 +169,6 @@ int event__process_task(event_t *self);
struct addr_location;
int event__preprocess_sample(const event_t *self, struct addr_location *al,
symbol_filter_t filter);
+int event__parse_sample(event_t *event, u64 type, struct sample_data *data);
#endif /* __PERF_RECORD_H */
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4805e6d..59a9c0b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -187,7 +187,9 @@ static int do_write(int fd, const void *buf, size_t size)
static int __dsos__write_buildid_table(struct list_head *head, int fd)
{
+#define NAME_ALIGN 64
struct dso *pos;
+ static const char zero_buf[NAME_ALIGN];
list_for_each_entry(pos, head, node) {
int err;
@@ -197,14 +199,17 @@ static int __dsos__write_buildid_table(struct list_head *head, int fd)
if (!pos->has_build_id)
continue;
len = pos->long_name_len + 1;
- len = ALIGN(len, 64);
+ len = ALIGN(len, NAME_ALIGN);
memset(&b, 0, sizeof(b));
memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
b.header.size = sizeof(b) + len;
err = do_write(fd, &b, sizeof(b));
if (err < 0)
return err;
- err = do_write(fd, pos->long_name, len);
+ err = do_write(fd, pos->long_name, pos->long_name_len + 1);
+ if (err < 0)
+ return err;
+ err = do_write(fd, zero_buf, len - pos->long_name_len - 1);
if (err < 0)
return err;
}
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 9e5dbd6..e5bc0fb 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -197,7 +197,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
if (id == config) {
closedir(evt_dir);
closedir(sys_dir);
- path = zalloc(sizeof(path));
+ path = zalloc(sizeof(*path));
path->system = malloc(MAX_EVENT_LENGTH);
if (!path->system) {
free(path);
@@ -467,7 +467,6 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags)
while ((evt_ent = readdir(evt_dir))) {
char event_opt[MAX_EVOPT_LEN + 1];
int len;
- unsigned int rem = MAX_EVOPT_LEN;
if (!strcmp(evt_ent->d_name, ".")
|| !strcmp(evt_ent->d_name, "..")
@@ -475,20 +474,12 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags)
|| !strcmp(evt_ent->d_name, "filter"))
continue;
- len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s", sys_name,
- evt_ent->d_name);
+ len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
+ evt_ent->d_name, flags ? ":" : "",
+ flags ?: "");
if (len < 0)
return EVT_FAILED;
- rem -= len;
- if (flags) {
- if (rem < strlen(flags) + 1)
- return EVT_FAILED;
-
- strcat(event_opt, ":");
- strcat(event_opt, flags);
- }
-
if (parse_events(NULL, event_opt, 0))
return EVT_FAILED;
}
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index 6d8af48..efebd5b 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -430,6 +430,9 @@ int usage_with_options_internal(const char * const *usagestr,
pos = fprintf(stderr, " ");
if (opts->short_name)
pos += fprintf(stderr, "-%c", opts->short_name);
+ else
+ pos += fprintf(stderr, " ");
+
if (opts->long_name && opts->short_name)
pos += fprintf(stderr, ", ");
if (opts->long_name)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index cd7fbda..d14a458 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -48,6 +48,9 @@
/* If there is no space to write, returns -E2BIG. */
static int e_snprintf(char *str, size_t size, const char *format, ...)
+ __attribute__((format(printf, 3, 4)));
+
+static int e_snprintf(char *str, size_t size, const char *format, ...)
{
int ret;
va_list ap;
@@ -258,7 +261,7 @@ int synthesize_perf_probe_event(struct probe_point *pp)
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function,
offs, pp->retprobe ? "%return" : "", line);
else
- ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->file, line);
+ ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line);
if (ret <= 0)
goto error;
len = ret;
@@ -373,14 +376,32 @@ static void clear_probe_point(struct probe_point *pp)
free(pp->args);
for (i = 0; i < pp->found; i++)
free(pp->probes[i]);
- memset(pp, 0, sizeof(pp));
+ memset(pp, 0, sizeof(*pp));
+}
+
+/* Show an event */
+static void show_perf_probe_event(const char *group, const char *event,
+ const char *place, struct probe_point *pp)
+{
+ int i;
+ char buf[128];
+
+ e_snprintf(buf, 128, "%s:%s", group, event);
+ printf(" %-40s (on %s", buf, place);
+
+ if (pp->nr_args > 0) {
+ printf(" with");
+ for (i = 0; i < pp->nr_args; i++)
+ printf(" %s", pp->args[i]);
+ }
+ printf(")\n");
}
/* List up current perf-probe events */
void show_perf_probe_events(void)
{
unsigned int i;
- int fd;
+ int fd, nr;
char *group, *event;
struct probe_point pp;
struct strlist *rawlist;
@@ -393,8 +414,13 @@ void show_perf_probe_events(void)
for (i = 0; i < strlist__nr_entries(rawlist); i++) {
ent = strlist__entry(rawlist, i);
parse_trace_kprobe_event(ent->s, &group, &event, &pp);
+ /* Synthesize only event probe point */
+ nr = pp.nr_args;
+ pp.nr_args = 0;
synthesize_perf_probe_event(&pp);
- printf("[%s:%s]\t%s\n", group, event, pp.probes[0]);
+ pp.nr_args = nr;
+ /* Show an event */
+ show_perf_probe_event(group, event, pp.probes[0], &pp);
free(group);
free(event);
clear_probe_point(&pp);
@@ -404,21 +430,28 @@ void show_perf_probe_events(void)
}
/* Get current perf-probe event names */
-static struct strlist *get_perf_event_names(int fd)
+static struct strlist *get_perf_event_names(int fd, bool include_group)
{
unsigned int i;
char *group, *event;
+ char buf[128];
struct strlist *sl, *rawlist;
struct str_node *ent;
rawlist = get_trace_kprobe_event_rawlist(fd);
- sl = strlist__new(false, NULL);
+ sl = strlist__new(true, NULL);
for (i = 0; i < strlist__nr_entries(rawlist); i++) {
ent = strlist__entry(rawlist, i);
parse_trace_kprobe_event(ent->s, &group, &event, NULL);
- strlist__add(sl, event);
+ if (include_group) {
+ if (e_snprintf(buf, 128, "%s:%s", group, event) < 0)
+ die("Failed to copy group:event name.");
+ strlist__add(sl, buf);
+ } else
+ strlist__add(sl, event);
free(group);
+ free(event);
}
strlist__delete(rawlist);
@@ -426,24 +459,30 @@ static struct strlist *get_perf_event_names(int fd)
return sl;
}
-static int write_trace_kprobe_event(int fd, const char *buf)
+static void write_trace_kprobe_event(int fd, const char *buf)
{
int ret;
+ pr_debug("Writing event: %s\n", buf);
ret = write(fd, buf, strlen(buf));
if (ret <= 0)
- die("Failed to create event.");
- else
- printf("Added new event: %s\n", buf);
-
- return ret;
+ die("Failed to write event: %s", strerror(errno));
}
static void get_new_event_name(char *buf, size_t len, const char *base,
struct strlist *namelist)
{
int i, ret;
- for (i = 0; i < MAX_EVENT_INDEX; i++) {
+
+ /* Try no suffix */
+ ret = e_snprintf(buf, len, "%s", base);
+ if (ret < 0)
+ die("snprintf() failed: %s", strerror(-ret));
+ if (!strlist__has_entry(namelist, buf))
+ return;
+
+ /* Try to add suffix */
+ for (i = 1; i < MAX_EVENT_INDEX; i++) {
ret = e_snprintf(buf, len, "%s_%d", base, i);
if (ret < 0)
die("snprintf() failed: %s", strerror(-ret));
@@ -464,7 +503,7 @@ void add_trace_kprobe_events(struct probe_point *probes, int nr_probes)
fd = open_kprobe_events(O_RDWR, O_APPEND);
/* Get current event names */
- namelist = get_perf_event_names(fd);
+ namelist = get_perf_event_names(fd, false);
for (j = 0; j < nr_probes; j++) {
pp = probes + j;
@@ -476,9 +515,73 @@ void add_trace_kprobe_events(struct probe_point *probes, int nr_probes)
PERFPROBE_GROUP, event,
pp->probes[i]);
write_trace_kprobe_event(fd, buf);
+ printf("Added new event:\n");
+ /* Get the first parameter (probe-point) */
+ sscanf(pp->probes[i], "%s", buf);
+ show_perf_probe_event(PERFPROBE_GROUP, event,
+ buf, pp);
/* Add added event name to namelist */
strlist__add(namelist, event);
}
}
+ /* Show how to use the event. */
+ printf("\nYou can now use it on all perf tools, such as:\n\n");
+ printf("\tperf record -e %s:%s -a sleep 1\n\n", PERFPROBE_GROUP, event);
+
+ strlist__delete(namelist);
+ close(fd);
+}
+
+static void del_trace_kprobe_event(int fd, const char *group,
+ const char *event, struct strlist *namelist)
+{
+ char buf[128];
+
+ if (e_snprintf(buf, 128, "%s:%s", group, event) < 0)
+ die("Failed to copy event.");
+ if (!strlist__has_entry(namelist, buf)) {
+ pr_warning("Warning: event \"%s\" is not found.\n", buf);
+ return;
+ }
+ /* Convert from perf-probe event to trace-kprobe event */
+ if (e_snprintf(buf, 128, "-:%s/%s", group, event) < 0)
+ die("Failed to copy event.");
+
+ write_trace_kprobe_event(fd, buf);
+ printf("Remove event: %s:%s\n", group, event);
+}
+
+void del_trace_kprobe_events(struct strlist *dellist)
+{
+ int fd;
+ unsigned int i;
+ const char *group, *event;
+ char *p, *str;
+ struct str_node *ent;
+ struct strlist *namelist;
+
+ fd = open_kprobe_events(O_RDWR, O_APPEND);
+ /* Get current event names */
+ namelist = get_perf_event_names(fd, true);
+
+ for (i = 0; i < strlist__nr_entries(dellist); i++) {
+ ent = strlist__entry(dellist, i);
+ str = strdup(ent->s);
+ if (!str)
+ die("Failed to copy event.");
+ p = strchr(str, ':');
+ if (p) {
+ group = str;
+ *p = '\0';
+ event = p + 1;
+ } else {
+ group = PERFPROBE_GROUP;
+ event = str;
+ }
+ del_trace_kprobe_event(fd, group, event, namelist);
+ free(str);
+ }
+ strlist__delete(namelist);
close(fd);
}
+
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index 0c6fe56..f752159 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -10,6 +10,7 @@ extern void parse_trace_kprobe_event(const char *str, char **group,
char **event, 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);
+extern void del_trace_kprobe_events(struct strlist *dellist);
extern void show_perf_probe_events(void);
/* Maximum index number of event-name postfix */
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 293cdfc..4585f1d 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -106,7 +106,7 @@ static int strtailcmp(const char *s1, const char *s2)
{
int i1 = strlen(s1);
int i2 = strlen(s2);
- while (--i1 > 0 && --i2 > 0) {
+ while (--i1 >= 0 && --i2 >= 0) {
if (s1[i1] != s2[i2])
return s1[i1] - s2[i2];
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index fffcb93..e7508ad 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -938,8 +938,9 @@ static bool __dsos__read_build_ids(struct list_head *head)
bool dsos__read_build_ids(void)
{
- return __dsos__read_build_ids(&dsos__kernel) ||
- __dsos__read_build_ids(&dsos__user);
+ bool kbuildids = __dsos__read_build_ids(&dsos__kernel),
+ ubuildids = __dsos__read_build_ids(&dsos__user);
+ return kbuildids || ubuildids;
}
/*
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 0302405..c5c32be 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -177,7 +177,7 @@ void parse_proc_kallsyms(char *file, unsigned int size __unused)
func_count++;
}
- func_list = malloc_or_die(sizeof(*func_list) * func_count + 1);
+ func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
i = 0;
while (list) {
@@ -1477,7 +1477,7 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
goto out_free;
field = malloc_or_die(sizeof(*field));
- memset(field, 0, sizeof(field));
+ memset(field, 0, sizeof(*field));
value = arg_eval(arg);
field->value = strdup(value);
diff --git a/tools/perf/util/trace-event-perl.c b/tools/perf/util/trace-event-perl.c
index 51e833f..a5ffe60 100644
--- a/tools/perf/util/trace-event-perl.c
+++ b/tools/perf/util/trace-event-perl.c
@@ -32,9 +32,6 @@
void xs_init(pTHX);
-void boot_Perf__Trace__Context(pTHX_ CV *cv);
-void boot_DynaLoader(pTHX_ CV *cv);
-
void xs_init(pTHX)
{
const char *file = __FILE__;
@@ -573,26 +570,72 @@ struct scripting_ops perl_scripting_ops = {
.generate_script = perl_generate_script,
};
-#ifdef NO_LIBPERL
-void setup_perl_scripting(void)
+static void print_unsupported_msg(void)
{
fprintf(stderr, "Perl scripting not supported."
- " Install libperl and rebuild perf to enable it. e.g. "
- "apt-get install libperl-dev (ubuntu), yum install "
- "perl-ExtUtils-Embed (Fedora), etc.\n");
+ " Install libperl and rebuild perf to enable it.\n"
+ "For example:\n # apt-get install libperl-dev (ubuntu)"
+ "\n # yum install perl-ExtUtils-Embed (Fedora)"
+ "\n etc.\n");
}
-#else
-void setup_perl_scripting(void)
+
+static int perl_start_script_unsupported(const char *script __unused)
+{
+ print_unsupported_msg();
+
+ return -1;
+}
+
+static int perl_stop_script_unsupported(void)
+{
+ return 0;
+}
+
+static void perl_process_event_unsupported(int cpu __unused,
+ void *data __unused,
+ int size __unused,
+ unsigned long long nsecs __unused,
+ char *comm __unused)
+{
+}
+
+static int perl_generate_script_unsupported(const char *outfile __unused)
+{
+ print_unsupported_msg();
+
+ return -1;
+}
+
+struct scripting_ops perl_scripting_unsupported_ops = {
+ .name = "Perl",
+ .start_script = perl_start_script_unsupported,
+ .stop_script = perl_stop_script_unsupported,
+ .process_event = perl_process_event_unsupported,
+ .generate_script = perl_generate_script_unsupported,
+};
+
+static void register_perl_scripting(struct scripting_ops *scripting_ops)
{
int err;
- err = script_spec_register("Perl", &perl_scripting_ops);
+ err = script_spec_register("Perl", scripting_ops);
if (err)
die("error registering Perl script extension");
- err = script_spec_register("pl", &perl_scripting_ops);
+ err = script_spec_register("pl", scripting_ops);
if (err)
die("error registering pl script extension");
scripting_context = malloc(sizeof(struct scripting_context));
}
+
+#ifdef NO_LIBPERL
+void setup_perl_scripting(void)
+{
+ register_perl_scripting(&perl_scripting_unsupported_ops);
+}
+#else
+void setup_perl_scripting(void)
+{
+ register_perl_scripting(&perl_scripting_ops);
+}
#endif
diff --git a/tools/perf/util/trace-event-perl.h b/tools/perf/util/trace-event-perl.h
index 8fe0d86..e88fb26 100644
--- a/tools/perf/util/trace-event-perl.h
+++ b/tools/perf/util/trace-event-perl.h
@@ -34,9 +34,13 @@ typedef int INTERP;
#define dXSUB_SYS
#define pTHX_
static inline void newXS(const char *a, void *b, const char *c) {}
+static void boot_Perf__Trace__Context(pTHX_ CV *cv) {}
+static void boot_DynaLoader(pTHX_ CV *cv) {}
#else
#include <EXTERN.h>
#include <perl.h>
+void boot_Perf__Trace__Context(pTHX_ CV *cv);
+void boot_DynaLoader(pTHX_ CV *cv);
typedef PerlInterpreter * INTERP;
#endif
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index 342dfdd..1744422 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -145,8 +145,9 @@ static void read_proc_kallsyms(void)
if (!size)
return;
- buf = malloc_or_die(size);
+ buf = malloc_or_die(size + 1);
read_or_die(buf, size);
+ buf[size] = '\0';
parse_proc_kallsyms(buf, size);
generated by cgit v0.10.2 at 2024-06-29 10:03:54 (GMT)