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Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c150
1 files changed, 94 insertions, 56 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 8f113dab8bf1..7aaee39f6774 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -56,6 +56,10 @@ static int trace__read_syscall_info(struct trace *trace, int id)
{
char tp_name[128];
struct syscall *sc;
+ const char *name = audit_syscall_to_name(id, trace->audit_machine);
+
+ if (name == NULL)
+ return -1;
if (id > trace->syscalls.max) {
struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
@@ -75,11 +79,8 @@ static int trace__read_syscall_info(struct trace *trace, int id)
}
sc = trace->syscalls.table + id;
- sc->name = audit_syscall_to_name(id, trace->audit_machine);
- if (sc->name == NULL)
- return -1;
-
- sc->fmt = syscall_fmt__find(sc->name);
+ sc->name = name;
+ sc->fmt = syscall_fmt__find(sc->name);
snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
sc->tp_format = event_format__new("syscalls", tp_name);
@@ -114,10 +115,85 @@ static size_t syscall__fprintf_args(struct syscall *sc, unsigned long *args, FIL
return printed;
}
+typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
+ struct perf_sample *sample);
+
+static struct syscall *trace__syscall_info(struct trace *trace,
+ struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ int id = perf_evsel__intval(evsel, sample, "id");
+
+ if (id < 0) {
+ printf("Invalid syscall %d id, skipping...\n", id);
+ return NULL;
+ }
+
+ if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
+ trace__read_syscall_info(trace, id))
+ goto out_cant_read;
+
+ if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
+ goto out_cant_read;
+
+ return &trace->syscalls.table[id];
+
+out_cant_read:
+ printf("Problems reading syscall %d information\n", id);
+ return NULL;
+}
+
+static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ void *args;
+ struct syscall *sc = trace__syscall_info(trace, evsel, sample);
+
+ if (sc == NULL)
+ return -1;
+
+ args = perf_evsel__rawptr(evsel, sample, "args");
+ if (args == NULL) {
+ printf("Problems reading syscall arguments\n");
+ return -1;
+ }
+
+ printf("%s(", sc->name);
+ syscall__fprintf_args(sc, args, stdout);
+
+ return 0;
+}
+
+static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ int ret;
+ struct syscall *sc = trace__syscall_info(trace, evsel, sample);
+
+ if (sc == NULL)
+ return -1;
+
+ ret = perf_evsel__intval(evsel, sample, "ret");
+
+ if (ret < 0 && sc->fmt && sc->fmt->errmsg) {
+ char bf[256];
+ const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
+ *e = audit_errno_to_name(-ret);
+
+ printf(") = -1 %s %s", e, emsg);
+ } else if (ret == 0 && sc->fmt && sc->fmt->timeout)
+ printf(") = 0 Timeout");
+ else
+ printf(") = %d", ret);
+
+ putchar('\n');
+ return 0;
+}
+
static int trace__run(struct trace *trace)
{
struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
- struct perf_evsel *evsel, *evsel_enter, *evsel_exit;
+ struct perf_evsel *evsel;
int err = -1, i, nr_events = 0, before;
if (evlist == NULL) {
@@ -125,22 +201,12 @@ static int trace__run(struct trace *trace)
goto out;
}
- evsel_enter = perf_evsel__newtp("raw_syscalls", "sys_enter", 0);
- if (evsel_enter == NULL) {
- printf("Couldn't read the raw_syscalls:sys_enter tracepoint information!\n");
+ if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter", trace__sys_enter) ||
+ perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit", trace__sys_exit)) {
+ printf("Couldn't read the raw_syscalls tracepoints information!\n");
goto out_delete_evlist;
}
- perf_evlist__add(evlist, evsel_enter);
-
- evsel_exit = perf_evsel__newtp("raw_syscalls", "sys_exit", 1);
- if (evsel_exit == NULL) {
- printf("Couldn't read the raw_syscalls:sys_exit tracepoint information!\n");
- goto out_delete_evlist;
- }
-
- perf_evlist__add(evlist, evsel_exit);
-
err = perf_evlist__create_maps(evlist, &trace->opts.target);
if (err < 0) {
printf("Problems parsing the target to trace, check your options!\n");
@@ -170,9 +236,8 @@ again:
while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
const u32 type = event->header.type;
- struct syscall *sc;
+ tracepoint_handler handler;
struct perf_sample sample;
- int id;
++nr_events;
@@ -200,45 +265,18 @@ again:
continue;
}
- id = perf_evsel__intval(evsel, &sample, "id");
- if (id < 0) {
- printf("Invalid syscall %d id, skipping...\n", id);
- continue;
- }
-
- if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
- trace__read_syscall_info(trace, id))
- continue;
-
- if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
- continue;
-
- sc = &trace->syscalls.table[id];
-
if (evlist->threads->map[0] == -1 || evlist->threads->nr > 1)
printf("%d ", sample.tid);
- if (evsel == evsel_enter) {
- void *args = perf_evsel__rawptr(evsel, &sample, "args");
-
- printf("%s(", sc->name);
- syscall__fprintf_args(sc, args, stdout);
- } else if (evsel == evsel_exit) {
- int ret = perf_evsel__intval(evsel, &sample, "ret");
-
- if (ret < 0 && sc->fmt && sc->fmt->errmsg) {
- char bf[256];
- const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
- *e = audit_errno_to_name(-ret);
-
- printf(") = -1 %s %s", e, emsg);
- } else if (ret == 0 && sc->fmt && sc->fmt->timeout)
- printf(") = 0 Timeout");
- else
- printf(") = %d", ret);
-
- putchar('\n');
+ if (sample.raw_data == NULL) {
+ printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
+ perf_evsel__name(evsel), sample.tid,
+ sample.cpu, sample.raw_size);
+ continue;
}
+
+ handler = evsel->handler.func;
+ handler(trace, evsel, &sample);
}
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 16:48:28 +0300