From: Arnaldo Carvalho de Melo <[email protected]>
It'll use tools/include copy of linux/fs.h to generate a table to be
used by tools, initially by the 'mount' and 'umount' beautifiers in
'perf trace', but that could also be used to translate from a string
constant to the integer value to be used in a eBPF or tracefs tracepoint
filter.
When used without any args it produces:
$ tools/perf/trace/beauty/mount_flags.sh
static const char *mount_flags[] = {
[1 ? (ilog2(1) + 1) : 0] = "RDONLY",
[2 ? (ilog2(2) + 1) : 0] = "NOSUID",
[4 ? (ilog2(4) + 1) : 0] = "NODEV",
[8 ? (ilog2(8) + 1) : 0] = "NOEXEC",
[16 ? (ilog2(16) + 1) : 0] = "SYNCHRONOUS",
[32 ? (ilog2(32) + 1) : 0] = "REMOUNT",
[64 ? (ilog2(64) + 1) : 0] = "MANDLOCK",
[128 ? (ilog2(128) + 1) : 0] = "DIRSYNC",
[1024 ? (ilog2(1024) + 1) : 0] = "NOATIME",
[2048 ? (ilog2(2048) + 1) : 0] = "NODIRATIME",
[4096 ? (ilog2(4096) + 1) : 0] = "BIND",
[8192 ? (ilog2(8192) + 1) : 0] = "MOVE",
[16384 ? (ilog2(16384) + 1) : 0] = "REC",
[32768 ? (ilog2(32768) + 1) : 0] = "SILENT",
[16 + 1] = "POSIXACL",
[17 + 1] = "UNBINDABLE",
[18 + 1] = "PRIVATE",
[19 + 1] = "SLAVE",
[20 + 1] = "SHARED",
[21 + 1] = "RELATIME",
[22 + 1] = "KERNMOUNT",
[23 + 1] = "I_VERSION",
[24 + 1] = "STRICTATIME",
[25 + 1] = "LAZYTIME",
[26 + 1] = "SUBMOUNT",
[27 + 1] = "NOREMOTELOCK",
[28 + 1] = "NOSEC",
[29 + 1] = "BORN",
[30 + 1] = "ACTIVE",
[31 + 1] = "NOUSER",
};
$
Cc: Adrian Hunter <[email protected]>
Cc: Benjamin Peterson <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/trace/beauty/mount_flags.sh | 15 +++++++++++++++
1 file changed, 15 insertions(+)
create mode 100755 tools/perf/trace/beauty/mount_flags.sh
diff --git a/tools/perf/trace/beauty/mount_flags.sh
b/tools/perf/trace/beauty/mount_flags.sh
new file mode 100755
index 000000000000..45547573a1db
--- /dev/null
+++ b/tools/perf/trace/beauty/mount_flags.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1
+
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/linux/
+
+printf "static const char *mount_flags[] = {\n"
+regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MS_([[:alnum:]_]+)[[:space:]]+([[:digit:]]+)[[:space:]]*.*'
+egrep $regex ${header_dir}/fs.h | egrep -v '(MSK|VERBOSE|MGC_VAL)\>' | \
+ sed -r "s/$regex/\2 \2 \1/g" | sort -n | \
+ xargs printf "\t[%s ? (ilog2(%s) + 1) : 0] = \"%s\",\n"
+regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MS_([[:alnum:]_]+)[[:space:]]+\(1<<([[:digit:]]+)\)[[:space:]]*.*'
+egrep $regex ${header_dir}/fs.h | \
+ sed -r "s/$regex/\2 \1/g" | \
+ xargs printf "\t[%s + 1] = \"%s\",\n"
+printf "};\n"
--
2.14.4
