perf trace: Beautify linux specific fcntl commands

We were only beautifying (transforming from an integer to its name) the
non-linux specific fcntl syscall cmd args, fix it:

Before:

  # perf trace -e fcntl -p 2472
     0.000 ( 0.017 ms): gnome-terminal/2472 fcntl(fd: 55, cmd: 1030) = 56
  ^C#

After:

  # trace -e fcntl -p 2472
     0.000 ( 0.015 ms): gnome-terminal/2472 fcntl(fd: 55, cmd: DUPFD_CLOEXEC) = 56
  ^C#

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-zigsxruk4wbfn8iylboy9wzo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index cfe1858..431ef70 100644 (file)
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -64,6 +64,10 @@
 # define O_CLOEXEC             02000000
 #endif
 
+#ifndef F_LINUX_SPECIFIC_BASE
+# define F_LINUX_SPECIFIC_BASE 1024
+#endif
+
 struct trace {
        struct perf_tool        tool;
        struct syscalltbl       *sctbl;
@@ -317,6 +321,38 @@ static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
 
 #define SCA_STRARRAY syscall_arg__scnprintf_strarray
 
+struct strarrays {
+       int             nr_entries;
+       struct strarray **entries;
+};
+
+#define DEFINE_STRARRAYS(array) struct strarrays strarrays__##array = { \
+       .nr_entries = ARRAY_SIZE(array), \
+       .entries = array, \
+}
+
+static size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size,
+                                              struct syscall_arg *arg)
+{
+       struct strarrays *sas = arg->parm;
+       int i;
+
+       for (i = 0; i < sas->nr_entries; ++i) {
+               struct strarray *sa = sas->entries[i];
+               int idx = arg->val - sa->offset;
+
+               if (idx >= 0 && idx < sa->nr_entries) {
+                       if (sa->entries[idx] == NULL)
+                               break;
+                       return scnprintf(bf, size, "%s", sa->entries[idx]);
+               }
+       }
+
+       return scnprintf(bf, size, "%d", arg->val);
+}
+
+#define SCA_STRARRAYS syscall_arg__scnprintf_strarrays
+
 #if defined(__i386__) || defined(__x86_64__)
 /*
  * FIXME: Make this available to all arches as soon as the ioctl beautifier
@@ -413,6 +449,20 @@ static const char *fcntl_cmds[] = {
 };
 static DEFINE_STRARRAY(fcntl_cmds);
 
+static const char *fcntl_linux_specific_cmds[] = {
+       "SETLEASE", "GETLEASE", "NOTIFY", [5] = "CANCELLK", "DUPFD_CLOEXEC",
+       "SETPIPE_SZ", "GETPIPE_SZ", "ADD_SEALS", "GET_SEALS",
+};
+
+static DEFINE_STRARRAY_OFFSET(fcntl_linux_specific_cmds, F_LINUX_SPECIFIC_BASE);
+
+static struct strarray *fcntl_cmds_arrays[] = {
+       &strarray__fcntl_cmds,
+       &strarray__fcntl_linux_specific_cmds,
+};
+
+static DEFINE_STRARRAYS(fcntl_cmds_arrays);
+
 static const char *rlimit_resources[] = {
        "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
        "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
@@ -613,8 +663,8 @@ static struct syscall_fmt {
        { .name     = "fchownat",   .errmsg = true,
          .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
        { .name     = "fcntl",      .errmsg = true,
-         .arg_scnprintf = { [1] = SCA_STRARRAY, /* cmd */ },
-         .arg_parm      = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },
+         .arg_scnprintf = { [1] = SCA_STRARRAYS, /* cmd */ },
+         .arg_parm      = { [1] = &strarrays__fcntl_cmds_arrays, /* cmd */ }, },
        { .name     = "fdatasync",  .errmsg = true, },
        { .name     = "flock",      .errmsg = true,
          .arg_scnprintf = { [1] = SCA_FLOCK, /* cmd */ }, },
@@ -1356,7 +1406,8 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
                         */
                        if (val == 0 &&
                            !(sc->arg_scnprintf &&
-                             sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
+                             (sc->arg_scnprintf[arg.idx] == SCA_STRARRAY ||
+                              sc->arg_scnprintf[arg.idx] == SCA_STRARRAYS) &&
                              sc->arg_parm[arg.idx]))
                                continue;