linux-kernel - [tip:x86/asm] x86/syscalls: Refactor syscalltbl.sh

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Message-ID: <tip-fba324744bfd2a7948a7710d7a021d76dafb9b67@git.kernel.org>
Date:	Fri, 29 Jan 2016 03:34:23 -0800
From:	tip-bot for Andy Lutomirski <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	brgerst@...il.com, torvalds@...ux-foundation.org, mingo@...nel.org,
	tglx@...utronix.de, luto@...nel.org, dvlasenk@...hat.com,
	fweisbec@...il.com, linux-kernel@...r.kernel.org,
	luto@...capital.net, peterz@...radead.org, hpa@...or.com,
	bp@...en8.de
Subject: [tip:x86/asm] x86/syscalls: Refactor syscalltbl.sh

Commit-ID:  fba324744bfd2a7948a7710d7a021d76dafb9b67
Gitweb:     http://git.kernel.org/tip/fba324744bfd2a7948a7710d7a021d76dafb9b67
Author:     Andy Lutomirski <luto@...nel.org>
AuthorDate: Thu, 28 Jan 2016 15:11:21 -0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 29 Jan 2016 09:46:37 +0100

x86/syscalls: Refactor syscalltbl.sh

This splits out the code to emit a syscall line.

Signed-off-by: Andy Lutomirski <luto@...nel.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1bfcbba991f5cfaa9291ff950a593daa972a205f.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/entry/syscalls/syscalltbl.sh | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/arch/x86/entry/syscalls/syscalltbl.sh b/arch/x86/entry/syscalls/syscalltbl.sh
index 0e7f8ec..167965e 100644
--- a/arch/x86/entry/syscalls/syscalltbl.sh
+++ b/arch/x86/entry/syscalls/syscalltbl.sh
@@ -3,13 +3,21 @@
 in="$1"
 out="$2"
 
+emit() {
+    abi="$1"
+    nr="$2"
+    entry="$3"
+    compat="$4"
+    if [ -n "$compat" ]; then
+	echo "__SYSCALL_${abi}($nr, $entry, $compat)"
+    elif [ -n "$entry" ]; then
+	echo "__SYSCALL_${abi}($nr, $entry, $entry)"
+    fi
+}
+
 grep '^[0-9]' "$in" | sort -n | (
     while read nr abi name entry compat; do
 	abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
-	if [ -n "$compat" ]; then
-	    echo "__SYSCALL_${abi}($nr, $entry, $compat)"
-	elif [ -n "$entry" ]; then
-	    echo "__SYSCALL_${abi}($nr, $entry, $entry)"
-	fi
+	emit "$abi" "$nr" "$entry" "$compat"
     done
 ) > "$out"