[PATCH 23/86] perf trace beauty: Give syscall return beautifier more context

Arnaldo Carvalho de Melo
2017-07-19T14:32:15Z

From: Arnaldo Carvalho de Melo <acme@redhat.com>

We need the current thread and the trace internal state so that we can
use the fd beautifier to augment syscall returns, so use struct
syscall_arg with some fields that make sense on returns (val, thread,
trace).

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: http://lkml.kernel.org/n/tip-lqag8e86ybidrh5zpqne05ov@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-trace.c | 11 ++++++++---
tools/perf/trace/beauty/beauty.h | 5 ++++-
tools/perf/trace/beauty/fcntl.c | 9 +++++++--
tools/perf/trace/beauty/open_flags.c | 5 +----
4 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d48981c36b70..cfa8bf1cca43 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -918,7 +918,7 @@ struct thread_trace {
unsigned long pfmaj, pfmin;
char *entry_str;
double runtime_ms;
- size_t (*ret_scnprintf)(unsigned long value, char *bf, size_t size);
+ size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
struct {
unsigned long ptr;
short int entry_str_pos;
@@ -971,7 +971,7 @@ static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)

void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
- size_t (*ret_scnprintf)(unsigned long val, char *bf, size_t size))
+ size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg))
{
struct thread_trace *ttrace = thread__priv(arg->thread);

@@ -1726,7 +1726,12 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
fprintf(trace->output, ") = 0 Timeout");
else if (ttrace->ret_scnprintf) {
char bf[1024];
- ttrace->ret_scnprintf(ret, bf, sizeof(bf));
+ struct syscall_arg arg = {
+ .val = ret,
+ .thread = thread,
+ .trace = trace,
+ };
+ ttrace->ret_scnprintf(bf, sizeof(bf), &arg);
ttrace->ret_scnprintf = NULL;
fprintf(trace->output, ") = %s", bf);
} else if (sc->fmt->hexret)
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index a9613d2e6cfe..b64c4116cdc4 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -46,6 +46,9 @@ size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_ar
size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FCNTL_ARG syscall_arg__scnprintf_fcntl_arg

+size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct syscall_arg *arg);
+#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
+
size_t syscall_arg__scnprintf_statx_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_STATX_FLAGS syscall_arg__scnprintf_statx_flags

@@ -55,6 +58,6 @@ size_t syscall_arg__scnprintf_statx_mask(char *bf, size_t size, struct syscall_a
size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size);

void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
- size_t (*ret_scnprintf)(unsigned long val, char *bf, size_t size));
+ size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg));

#endif /* _PERF_TRACE_BEAUTY_H */
diff --git a/tools/perf/trace/beauty/fcntl.c b/tools/perf/trace/beauty/fcntl.c
index 384f177a4304..9de80a7eddfa 100644
--- a/tools/perf/trace/beauty/fcntl.c
+++ b/tools/perf/trace/beauty/fcntl.c
@@ -15,14 +15,19 @@ static size_t fcntl__scnprintf_getfd(unsigned long val, char *bf, size_t size)
return scnprintf(bf, size, "%s", val ? "CLOEXEC" : "0");
}

+static size_t syscall_arg__scnprintf_fcntl_getfd(char *bf, size_t size, struct syscall_arg *arg)
+{
+ return fcntl__scnprintf_getfd(arg->val, bf, size);
+}
+
size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_arg *arg)
{
if (arg->val == F_GETFL) {
- syscall_arg__set_ret_scnprintf(arg, open__scnprintf_flags);
+ syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_open_flags);
goto mask_arg;
}
if (arg->val == F_GETFD) {
- syscall_arg__set_ret_scnprintf(arg, fcntl__scnprintf_getfd);
+ syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getfd);
goto mask_arg;
}
/*
diff --git a/tools/perf/trace/beauty/open_flags.c b/tools/perf/trace/beauty/open_flags.c
index 3c20683d8cfb..e359e041dc0e 100644
--- a/tools/perf/trace/beauty/open_flags.c
+++ b/tools/perf/trace/beauty/open_flags.c
@@ -73,7 +73,7 @@ size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size)
return printed;
}

-static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct syscall_arg *arg)
+size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct syscall_arg *arg)
{
int flags = arg->val;

@@ -82,6 +82,3 @@ static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct sy

return open__scnprintf_flags(flags, bf, size);
}
-
-
-#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
--
2.9.4