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Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c128
1 files changed, 71 insertions, 57 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index f2757d38c7d7..17d11deeb88d 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -21,6 +21,7 @@
#include "builtin.h"
#include "util/color.h"
#include "util/debug.h"
+#include "util/env.h"
#include "util/event.h"
#include "util/evlist.h"
#include <subcmd/exec-cmd.h>
@@ -45,18 +46,17 @@
#include <errno.h>
#include <inttypes.h>
-#include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */
#include <poll.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <linux/err.h>
#include <linux/filter.h>
-#include <linux/audit.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/stringify.h>
#include <linux/time64.h>
+#include <fcntl.h>
#include "sane_ctype.h"
@@ -111,6 +111,7 @@ struct trace {
bool summary;
bool summary_only;
bool show_comm;
+ bool print_sample;
bool show_tool_stats;
bool trace_syscalls;
bool kernel_syscallchains;
@@ -545,9 +546,10 @@ static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
{ .scnprintf = SCA_STRARRAY, \
.parm = &strarray__##array, }
+#include "trace/beauty/arch_errno_names.c"
#include "trace/beauty/eventfd.c"
-#include "trace/beauty/flock.c"
#include "trace/beauty/futex_op.c"
+#include "trace/beauty/futex_val3.c"
#include "trace/beauty/mmap.c"
#include "trace/beauty/mode_t.c"
#include "trace/beauty/msg_flags.c"
@@ -610,7 +612,8 @@ static struct syscall_fmt {
{ .name = "fstat", .alias = "newfstat", },
{ .name = "fstatat", .alias = "newfstatat", },
{ .name = "futex",
- .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, /* op */ }, }, },
+ .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, /* op */ },
+ [5] = { .scnprintf = SCA_FUTEX_VAL3, /* val3 */ }, }, },
{ .name = "futimesat",
.arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
{ .name = "getitimer",
@@ -622,6 +625,7 @@ static struct syscall_fmt {
.arg = { [2] = { .scnprintf = SCA_GETRANDOM_FLAGS, /* flags */ }, }, },
{ .name = "getrlimit",
.arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
+ { .name = "gettid", .errpid = true, },
{ .name = "ioctl",
.arg = {
#if defined(__i386__) || defined(__x86_64__)
@@ -819,7 +823,7 @@ static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
size_t printed = fprintf(fp, "(");
if (!calculated)
- printed += fprintf(fp, " ? ");
+ printed += fprintf(fp, " ");
else if (duration >= 1.0)
printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
else if (duration >= 0.01)
@@ -1152,12 +1156,14 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
if (trace->host == NULL)
return -ENOMEM;
- if (trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr) < 0)
- return -errno;
+ err = trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr);
+ if (err < 0)
+ goto out;
err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
evlist->threads, trace__tool_process, false,
trace->opts.proc_map_timeout, 1);
+out:
if (err)
symbol__exit();
@@ -1552,10 +1558,9 @@ static void thread__update_stats(struct thread_trace *ttrace,
update_stats(stats, duration);
}
-static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample)
+static int trace__printf_interrupted_entry(struct trace *trace)
{
struct thread_trace *ttrace;
- u64 duration;
size_t printed;
if (trace->current == NULL)
@@ -1566,15 +1571,30 @@ static int trace__printf_interrupted_entry(struct trace *trace, struct perf_samp
if (!ttrace->entry_pending)
return 0;
- duration = sample->time - ttrace->entry_time;
-
- printed = trace__fprintf_entry_head(trace, trace->current, duration, true, ttrace->entry_time, trace->output);
+ printed = trace__fprintf_entry_head(trace, trace->current, 0, false, ttrace->entry_time, trace->output);
printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
ttrace->entry_pending = false;
return printed;
}
+static int trace__fprintf_sample(struct trace *trace, struct perf_evsel *evsel,
+ struct perf_sample *sample, struct thread *thread)
+{
+ int printed = 0;
+
+ if (trace->print_sample) {
+ double ts = (double)sample->time / NSEC_PER_MSEC;
+
+ printed += fprintf(trace->output, "%22s %10.3f %s %d/%d [%d]\n",
+ perf_evsel__name(evsel), ts,
+ thread__comm_str(thread),
+ sample->pid, sample->tid, sample->cpu);
+ }
+
+ return printed;
+}
+
static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
union perf_event *event __maybe_unused,
struct perf_sample *sample)
@@ -1595,6 +1615,8 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
if (ttrace == NULL)
goto out_put;
+ trace__fprintf_sample(trace, evsel, sample, thread);
+
args = perf_evsel__sc_tp_ptr(evsel, args, sample);
if (ttrace->entry_str == NULL) {
@@ -1604,7 +1626,7 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
}
if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
- trace__printf_interrupted_entry(trace, sample);
+ trace__printf_interrupted_entry(trace);
ttrace->entry_time = sample->time;
msg = ttrace->entry_str;
@@ -1641,7 +1663,7 @@ static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evse
struct addr_location al;
if (machine__resolve(trace->host, &al, sample) < 0 ||
- thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, trace->max_stack))
+ thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, evsel->attr.sample_max_stack))
return -1;
return 0;
@@ -1657,6 +1679,14 @@ static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sam
return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
}
+static const char *errno_to_name(struct perf_evsel *evsel, int err)
+{
+ struct perf_env *env = perf_evsel__env(evsel);
+ const char *arch_name = perf_env__arch(env);
+
+ return arch_syscalls__strerrno(arch_name, err);
+}
+
static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
union perf_event *event __maybe_unused,
struct perf_sample *sample)
@@ -1677,6 +1707,8 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
if (ttrace == NULL)
goto out_put;
+ trace__fprintf_sample(trace, evsel, sample, thread);
+
if (trace->summary)
thread__update_stats(ttrace, id, sample);
@@ -1727,7 +1759,7 @@ signed_print:
errno_print: {
char bf[STRERR_BUFSIZE];
const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
- *e = audit_errno_to_name(-ret);
+ *e = errno_to_name(evsel, -ret);
fprintf(trace->output, ") = -1 %s %s", e, emsg);
}
@@ -1908,7 +1940,7 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
}
}
- trace__printf_interrupted_entry(trace, sample);
+ trace__printf_interrupted_entry(trace);
trace__fprintf_tstamp(trace, sample->time, trace->output);
if (trace->trace_syscalls)
@@ -2219,6 +2251,9 @@ static int trace__add_syscall_newtp(struct trace *trace)
if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
goto out_delete_sys_exit;
+ perf_evsel__config_callchain(sys_enter, &trace->opts, &callchain_param);
+ perf_evsel__config_callchain(sys_exit, &trace->opts, &callchain_param);
+
perf_evlist__add(evlist, sys_enter);
perf_evlist__add(evlist, sys_exit);
@@ -2315,6 +2350,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
if (pgfault_maj == NULL)
goto out_error_mem;
+ perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
perf_evlist__add(evlist, pgfault_maj);
}
@@ -2322,6 +2358,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
if (pgfault_min == NULL)
goto out_error_mem;
+ perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
perf_evlist__add(evlist, pgfault_min);
}
@@ -2342,45 +2379,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
goto out_delete_evlist;
}
- perf_evlist__config(evlist, &trace->opts, NULL);
-
- if (callchain_param.enabled) {
- bool use_identifier = false;
-
- if (trace->syscalls.events.sys_exit) {
- perf_evsel__config_callchain(trace->syscalls.events.sys_exit,
- &trace->opts, &callchain_param);
- use_identifier = true;
- }
-
- if (pgfault_maj) {
- perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
- use_identifier = true;
- }
-
- if (pgfault_min) {
- perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
- use_identifier = true;
- }
-
- if (use_identifier) {
- /*
- * Now we have evsels with different sample_ids, use
- * PERF_SAMPLE_IDENTIFIER to map from sample to evsel
- * from a fixed position in each ring buffer record.
- *
- * As of this the changeset introducing this comment, this
- * isn't strictly needed, as the fields that can come before
- * PERF_SAMPLE_ID are all used, but we'll probably disable
- * some of those for things like copying the payload of
- * pointer syscall arguments, and for vfs_getname we don't
- * need PERF_SAMPLE_ADDR and PERF_SAMPLE_IP, so do this
- * here as a warning we need to use PERF_SAMPLE_IDENTIFIER.
- */
- perf_evlist__set_sample_bit(evlist, IDENTIFIER);
- perf_evlist__reset_sample_bit(evlist, ID);
- }
- }
+ perf_evlist__config(evlist, &trace->opts, &callchain_param);
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
@@ -2435,7 +2434,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
if (err < 0)
goto out_error_apply_filters;
- err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
+ err = perf_evlist__mmap(evlist, trace->opts.mmap_pages);
if (err < 0)
goto out_error_mmap;
@@ -2453,6 +2452,18 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
evlist->threads->nr > 1 ||
perf_evlist__first(evlist)->attr.inherit;
+
+ /*
+ * Now that we already used evsel->attr to ask the kernel to setup the
+ * events, lets reuse evsel->attr.sample_max_stack as the limit in
+ * trace__resolve_callchain(), allowing per-event max-stack settings
+ * to override an explicitely set --max-stack global setting.
+ */
+ evlist__for_each_entry(evlist, evsel) {
+ if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) &&
+ evsel->attr.sample_max_stack == 0)
+ evsel->attr.sample_max_stack = trace->max_stack;
+ }
again:
before = trace->nr_events;
@@ -3044,6 +3055,8 @@ int cmd_trace(int argc, const char **argv)
"Set the maximum stack depth when parsing the callchain, "
"anything beyond the specified depth will be ignored. "
"Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
+ OPT_BOOLEAN(0, "print-sample", &trace.print_sample,
+ "print the PERF_RECORD_SAMPLE PERF_SAMPLE_ info, for debugging"),
OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout,
"per thread proc mmap processing timeout in ms"),
OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
@@ -3095,8 +3108,9 @@ int cmd_trace(int argc, const char **argv)
}
#ifdef HAVE_DWARF_UNWIND_SUPPORT
- if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled && trace.trace_syscalls)
+ if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled) {
record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
+ }
#endif
if (callchain_param.enabled) {