perf trace: Use strarray for ltrace's whence arg

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-5f9jhbq8my4ojarhtlygveox@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 13 insertions, 27 deletions

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 386ca2058ee7..7cb60526a6f1 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -72,31 +72,6 @@ static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
 
 #define SCA_HEX syscall_arg__scnprintf_hex
 
-static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
-                                            struct syscall_arg *arg)
-{
-        int whence = arg->val;
-
-        switch (whence) {
-#define P_WHENCE(n) case SEEK_##n: return scnprintf(bf, size, #n)
-        P_WHENCE(SET);
-        P_WHENCE(CUR);
-        P_WHENCE(END);
-#ifdef SEEK_DATA
-        P_WHENCE(DATA);
-#endif
-#ifdef SEEK_HOLE
-        P_WHENCE(HOLE);
-#endif
-#undef P_WHENCE
-        default: break;
-        }
-
-        return scnprintf(bf, size, "%#x", whence);
-}
-
-#define SCA_WHENCE syscall_arg__scnprintf_whence
-
 static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
                                                struct syscall_arg *arg)
 {
@@ -254,10 +229,20 @@ static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct sysc
         return printed;
 }
 
+#define SCA_FUTEX_OP  syscall_arg__scnprintf_futex_op
+
 static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
 static DEFINE_STRARRAY(itimers);
 
-#define SCA_FUTEX_OP  syscall_arg__scnprintf_futex_op
+static const char *whences[] = { "SET", "CUR", "END",
+#ifdef SEEK_DATA
+"DATA",
+#endif
+#ifdef SEEK_HOLE
+"HOLE",
+#endif
+};
+static DEFINE_STRARRAY(whences);
 
 static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
                                                struct syscall_arg *arg)
@@ -340,7 +325,8 @@ static struct syscall_fmt {
         { .name     = "ioctl",      .errmsg = true,
           .arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, },
         { .name     = "lseek",      .errmsg = true,
-          .arg_scnprintf = { [2] = SCA_WHENCE, /* whence */ }, },
+          .arg_scnprintf = { [2] = SCA_STRARRAY, /* whence */ },
+          .arg_parm      = { [2] = &strarray__whences, /* whence */ }, },
         { .name     = "lstat",      .errmsg = true, .alias = "newlstat", },
         { .name     = "madvise",    .errmsg = true,
           .arg_scnprintf = { [0] = SCA_HEX,      /* start */