linux-kernel - [tip:perf/core] perf beauty: Add generator for sync_file

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Date:   Thu, 30 May 2019 01:05:29 -0700
From:   tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, adrian.hunter@...el.com,
        mingo@...nel.org, amir73il@...il.com, brendan.d.gregg@...il.com,
        linux-kernel@...r.kernel.org, lclaudio@...hat.com, hpa@...or.com,
        jolsa@...nel.org, acme@...hat.com, namhyung@...nel.org,
        tglx@...utronix.de
Subject: [tip:perf/core] perf beauty: Add generator for sync_file_range's
 'flags' arg values

Commit-ID:  8ef6d74e1dd5ac830fa8b7943255ad9a44a94914
Gitweb:     https://git.kernel.org/tip/8ef6d74e1dd5ac830fa8b7943255ad9a44a94914
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 21 May 2019 21:43:39 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 28 May 2019 18:37:43 -0300

perf beauty: Add generator for sync_file_range's 'flags' arg values

  $ tools/perf/trace/beauty/sync_file_range.sh
  static const char *sync_file_range_flags[] = {
          [ilog2(1) + 1] = "WAIT_BEFORE",
          [ilog2(2) + 1] = "WRITE",
          [ilog2(4) + 1] = "WAIT_AFTER",
  };
  $

When all are the above are present, then we have something called
SYNC_FILE_RANGE_WRITE_AND_WAIT, that will be special cased in the
upcoming scnprintf beautifier for this flags arg.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Amir Goldstein <amir73il@...il.com>
Cc: Brendan Gregg <brendan.d.gregg@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Luis Cláudio Gonçalves <lclaudio@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: https://lkml.kernel.org/n/tip-uf2vd7bc8fkz65j7yit8dh84@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/trace/beauty/sync_file_range.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/tools/perf/trace/beauty/sync_file_range.sh b/tools/perf/trace/beauty/sync_file_range.sh
new file mode 100755
index 000000000000..7a9282d04e44
--- /dev/null
+++ b/tools/perf/trace/beauty/sync_file_range.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1
+
+if [ $# -ne 1 ] ; then
+	linux_header_dir=tools/include/uapi/linux
+else
+	linux_header_dir=$1
+fi
+
+linux_fs=${linux_header_dir}/fs.h
+
+printf "static const char *sync_file_range_flags[] = {\n"
+regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+SYNC_FILE_RANGE_([[:alnum:]_]+)[[:space:]]+([[:xdigit:]]+)[[:space:]]*.*'
+egrep $regex ${linux_fs} | \
+	sed -r "s/$regex/\2 \1/g"	| \
+	xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n"
+printf "};\n"