From 8a041f86a83f9783ba23a423a2d5a51b48136850 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 3 Sep 2018 16:07:53 -0300 Subject: [PATCH] perf trace: Introduce syscall__augmented_args() method That will be used by trace__sys_enter when we start combining the augmented syscalls:sys_enter_FOO + syscalls:sys_exit_FOO. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-iiseo3s0qbf9i3rzn8k597bv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c106189f4066..12356deb6046 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1677,6 +1677,17 @@ static int trace__fprintf_sample(struct trace *trace, struct perf_evsel *evsel, return printed; } +static void *syscall__augmented_args(struct syscall *sc, struct perf_sample *sample, int *augmented_args_size) +{ + void *augmented_args = NULL; + + *augmented_args_size = sample->raw_size - sc->args_size; + if (*augmented_args_size > 0) + augmented_args = sample->raw_data + sc->args_size; + + return augmented_args; +} + static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, union perf_event *event __maybe_unused, struct perf_sample *sample) @@ -1762,10 +1773,7 @@ static int trace__fprintf_sys_enter(struct trace *trace, struct perf_evsel *evse goto out_put; args = perf_evsel__sc_tp_ptr(evsel, args, sample); - augmented_args_size = sample->raw_size - sc->args_size; - if (augmented_args_size > 0) - augmented_args = sample->raw_data + sc->args_size; - + augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size); syscall__scnprintf_args(sc, msg, sizeof(msg), args, augmented_args, augmented_args_size, trace, thread); fprintf(trace->output, "%s", msg); err = 0;