Commit 8a041f86 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

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 <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-iiseo3s0qbf9i3rzn8k597bv@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 7538d163

tools/perf/builtin-trace.c

+12 −4
Original line number Diff line number Diff line
@@ -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;

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