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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-14 10:22:18 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-18 12:24:00 -0300 |
| commit | 42e4a52d01d087e7ce069049799e3e336eaec101 (patch) | |
| tree | 9a812d7b721179d79bc2c7c72c9d65e3cb1d8fdb /tools/perf | |
| parent | perf trace: Allow configuring if zeroed syscall args should be printed (diff) | |
| download | wireguard-linux-42e4a52d01d087e7ce069049799e3e336eaec101.tar.xz wireguard-linux-42e4a52d01d087e7ce069049799e3e336eaec101.zip | |
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>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-config.txt | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-trace.c | 9 |
2 files changed, 11 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index b55bd16c77fe..0d641b0d15ae 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -528,6 +528,10 @@ trace.*:: The initial use case is to add augmented_raw_syscalls.o to activate the 'perf trace' logic that looks for syscall pointer contents after the normal tracepoint payload. + + trace.show_duration:: + Show syscall duration. + trace.show_zeros:: Do not suppress syscall arguments that are equal to zero. diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 4d97bdac205c..4355dadad232 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -127,6 +127,7 @@ struct trace { bool show_tool_stats; bool trace_syscalls; bool kernel_syscallchains; + bool show_duration; bool show_zeros; bool force; 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) { 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); } @@ -2190,7 +2192,7 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, trace__printf_interrupted_entry(trace); trace__fprintf_tstamp(trace, sample->time, trace->output); - if (trace->trace_syscalls) + if (trace->trace_syscalls && trace->show_duration) fprintf(trace->output, "( ): "); 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", parse_events_option); 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")) { trace->show_zeros = perf_config_bool(var, value); } @@ -3568,6 +3572,7 @@ int cmd_trace(int argc, const char **argv) }, .output = stderr, .show_comm = true, + .show_duration = true, .trace_syscalls = false, .kernel_syscallchains = false, .max_stack = UINT_MAX, |