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perf trace: Allow configuring if the syscall duration should be printed 

# perf config trace.show_duration=no
  # perf config -l | grep trace
  trace.default_events=/home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
  trace.show_zeros=true
  trace.show_duration=no
  # trace -e *sleep sleep 1
     0.000 sleep/8729 nanosleep(rqtp: 0x7ffcb0b4c940, rmtp: 0) = 0
  # perf config trace.show_duration=yes
  # trace -e *sleep sleep 1
     0.000 (1000.212 ms): sleep/8735 nanosleep(rqtp: 0x7ffca15fa770, rmtp: 0) = 0
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-2c7h1m8fhzb9puxtj9nlevi8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-12-14 10:22:18 -03:00
parent e7c634fcc6
commit 42e4a52d01
2 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/perf/Documentation/perf-config.txt
View File

@ -528,6 +528,10 @@ trace.*::
The initial use case is to add augmented_raw_syscalls.o to The initial use case is to add augmented_raw_syscalls.o to
activate the 'perf trace' logic that looks for syscall activate the 'perf trace' logic that looks for syscall
pointer contents after the normal tracepoint payload. pointer contents after the normal tracepoint payload.
trace.show_duration::
Show syscall duration.
trace.show_zeros:: trace.show_zeros::
Do not suppress syscall arguments that are equal to zero. Do not suppress syscall arguments that are equal to zero.

9
tools/perf/builtin-trace.c
View File

@ -127,6 +127,7 @@ struct trace {
bool show_tool_stats; bool show_tool_stats;
bool trace_syscalls; bool trace_syscalls;
bool kernel_syscallchains; bool kernel_syscallchains;
bool show_duration;
bool show_zeros; bool show_zeros;
bool force; bool force;
bool vfs_getname; bool vfs_getname;
@ -1215,7 +1216,8 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre
u64 duration, bool duration_calculated, u64 tstamp, FILE *fp) u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
{ {
size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
printed += fprintf_duration(duration, duration_calculated, fp); if (trace->show_duration)
printed += fprintf_duration(duration, duration_calculated, fp);
return printed + trace__fprintf_comm_tid(trace, thread, fp); return printed + trace__fprintf_comm_tid(trace, thread, fp);
} }
@ -2190,7 +2192,7 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
trace__printf_interrupted_entry(trace); trace__printf_interrupted_entry(trace);
trace__fprintf_tstamp(trace, sample->time, trace->output); trace__fprintf_tstamp(trace, sample->time, trace->output);
if (trace->trace_syscalls) if (trace->trace_syscalls && trace->show_duration)
fprintf(trace->output, "( ): "); fprintf(trace->output, "( ): ");
if (thread) if (thread)
@ -3536,6 +3538,8 @@ static int trace__config(const char *var, const char *value, void *arg)
"event selector. use 'perf list' to list available events", "event selector. use 'perf list' to list available events",
parse_events_option); parse_events_option);
err = parse_events_option(&o, value, 0); err = parse_events_option(&o, value, 0);
} else if (!strcmp(var, "trace.show_duration")) {
trace->show_duration = perf_config_bool(var, value);
} else if (!strcmp(var, "trace.show_zeros")) { } else if (!strcmp(var, "trace.show_zeros")) {
trace->show_zeros = perf_config_bool(var, value); trace->show_zeros = perf_config_bool(var, value);
} }
@ -3568,6 +3572,7 @@ int cmd_trace(int argc, const char **argv)
}, },
.output = stderr, .output = stderr,
.show_comm = true, .show_comm = true,
.show_duration = true,
.trace_syscalls = false, .trace_syscalls = false,
.kernel_syscallchains = false, .kernel_syscallchains = false,
.max_stack = UINT_MAX, .max_stack = UINT_MAX,