perf trace: Add augmenter for clock_gettime's rqtp timespec arg

One more before going the BTF way:

  # perf trace -e /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o,*nanosleep
         ? pool-gsd-smart/2893  ... [continued]: clock_nanosleep())    = 0
         ? gpm/1042  ... [continued]: clock_nanosleep())    = 0
     1.232 pool-gsd-smart/2893 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f64d7ffec50) ...
     1.232 pool-gsd-smart/2893  ... [continued]: clock_nanosleep())    = 0
   327.329 gpm/1042 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffddfd1cf20) ...
  1002.482 pool-gsd-smart/2893 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f64d7ffec50) = 0
   327.329 gpm/1042  ... [continued]: clock_nanosleep())    = 0
  2003.947 pool-gsd-smart/2893 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f64d7ffec50) ...
  2003.947 pool-gsd-smart/2893  ... [continued]: clock_nanosleep())    = 0
  2327.858 gpm/1042 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffddfd1cf20) ...
         ? crond/1384  ... [continued]: clock_nanosleep())    = 0
  3005.382 pool-gsd-smart/2893 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f64d7ffec50) ...
  3005.382 pool-gsd-smart/2893  ... [continued]: clock_nanosleep())    = 0
  3675.633 crond/1384 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffcc02b66b0) ...
^C#

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 25 insertions, 0 deletions

diff --git a/tools/perf/trace/beauty/Build b/tools/perf/trace/beauty/Build
index 433dc39053a7..d11ce256f511 100644
--- a/tools/perf/trace/beauty/Build
+++ b/tools/perf/trace/beauty/Build
@@ -17,4 +17,5 @@ perf-y += sockaddr.o
 perf-y += socket.o
 perf-y += statx.o
 perf-y += sync_file_range.o
+perf-y += timespec.o
 perf-y += tracepoints/
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index f527a46ab4e7..4c59edddd6a8 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -244,6 +244,9 @@ size_t syscall_arg__scnprintf_statx_mask(char *bf, size_t size, struct syscall_a
 size_t syscall_arg__scnprintf_sync_file_range_flags(char *bf, size_t size, struct syscall_arg *arg);
 #define SCA_SYNC_FILE_RANGE_FLAGS syscall_arg__scnprintf_sync_file_range_flags
 
+size_t syscall_arg__scnprintf_timespec(char *bf, size_t size, struct syscall_arg *arg);
+#define SCA_TIMESPEC syscall_arg__scnprintf_timespec
+
 size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix);
 
 void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
diff --git a/tools/perf/trace/beauty/timespec.c b/tools/perf/trace/beauty/timespec.c
new file mode 100644
index 000000000000..e1a61f092aad
--- /dev/null
+++ b/tools/perf/trace/beauty/timespec.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: LGPL-2.1
+// Copyright (C) 2022, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+
+#include "trace/beauty/beauty.h"
+#include <inttypes.h>
+#include <time.h>
+
+static size_t syscall_arg__scnprintf_augmented_timespec(struct syscall_arg *arg, char *bf, size_t size)
+{
+	struct timespec *ts = (struct timespec *)arg->augmented.args;
+
+	return scnprintf(bf, size, "{ .tv_sec: %" PRIu64 ", .tv_nsec: %" PRIu64 " }", ts->tv_sec, ts->tv_nsec);
+}
+
+size_t syscall_arg__scnprintf_timespec(char *bf, size_t size, struct syscall_arg *arg)
+{
+	if (arg->augmented.args)
+		return syscall_arg__scnprintf_augmented_timespec(arg, bf, size);
+
+	return scnprintf(bf, size, "%#lx", arg->val);
+}