[tip:perf/core] perf beauty: Add generator for fsmount's 'attr_flags' arg values

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  3637c64731a78ebe81fba0c282208a860c839307
Gitweb:     https://git.kernel.org/tip/3637c64731a78ebe81fba0c282208a860c839307
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 21 May 2019 15:57:16 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 28 May 2019 18:37:43 -0300

perf beauty: Add generator for fsmount's 'attr_flags' arg values

  $ tools/perf/trace/beauty/fsmount.sh
  static const char *fsmount_attr_flags[] = {
          [ilog2(0x00000001) + 1] = "RDONLY",
          [ilog2(0x00000002) + 1] = "NOSUID",
          [ilog2(0x00000004) + 1] = "NODEV",
          [ilog2(0x00000008) + 1] = "NOEXEC",
          [ilog2(0x00000010) + 1] = "NOATIME",
          [ilog2(0x00000020) + 1] = "STRICTATIME",
          [ilog2(0x00000080) + 1] = "NODIRATIME",
  }

MOUNT_ATTR__ATIME and MOUNT_ATTR_RELATIME will be special cased in the
fsmount__scnprintf_flags() beautifier.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-sl24d7m2ge82mfmrbaf1mb0s@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/trace/beauty/fsmount.sh | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tools/perf/trace/beauty/fsmount.sh b/tools/perf/trace/beauty/fsmount.sh
new file mode 100755
index 000000000000..615cc0fcf4f9
--- /dev/null
+++ b/tools/perf/trace/beauty/fsmount.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1
+
+if [ $# -ne 1 ] ; then
+	linux_header_dir=tools/include/uapi/linux
+else
+	linux_header_dir=$1
+fi
+
+linux_mount=${linux_header_dir}/mount.h
+
+# Remove MOUNT_ATTR_RELATIME as it is zeros, handle it a special way in the beautifier
+# Only handle MOUNT_ATTR_ followed by a capital letter/num as __ is special case
+# for things like MOUNT_ATTR__ATIME that is a mask for the possible ATIME handling
+# bits. Special case it as well in the beautifier
+
+printf "static const char *fsmount_attr_flags[] = {\n"
+regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MOUNT_ATTR_([[:alnum:]][[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*'
+egrep $regex ${linux_mount} | grep -v MOUNT_ATTR_RELATIME | \
+	sed -r "s/$regex/\2 \1/g"	| \
+	xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n"
+printf "};\n"