linux-kernel - [PATCH v2 16/29] ktap: add amalgamation build(kernel/trace/ktap/amalg.c)

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Date:	Fri, 28 Mar 2014 10:45:11 -0400
From:	Jovi Zhangwei <jovi.zhangwei@...il.com>
To:	Ingo Molnar <mingo@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Jovi Zhangwei <jovi.zhangwei@...il.com>
Subject: [PATCH v2 16/29] ktap: add amalgamation build(kernel/trace/ktap/amalg.c)

This compiles the ktapvm as one huge C file and allows
GCC to generate faster and shorter code.

No amalgamation build in x86_64:
ktapvm.ko: 3.1M

amalgamation build in x86_64:
ktapvm.ko: 1.1M

User can set use amalgamation build or not in Makefile.

(Need to analyze further why have so big differences)

Signed-off-by: Jovi Zhangwei <jovi.zhangwei@...il.com>
---
 kernel/trace/ktap/amalg.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 kernel/trace/ktap/amalg.c

diff --git a/kernel/trace/ktap/amalg.c b/kernel/trace/ktap/amalg.c
new file mode 100644
index 0000000..9935ccf
--- /dev/null
+++ b/kernel/trace/ktap/amalg.c
@@ -0,0 +1,37 @@
+/*
+ * amalg.c - ktapvm kernel module amalgamation.
+ *
+ * This file is part of ktap by Jovi Zhangwei.
+ *
+ * Copyright (C) 2012-2014 Jovi Zhangwei <jovi.zhangwei@...il.com>.
+ *
+ * ktap is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * ktap is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "ktap.c"
+#include "kp_obj.c"
+#include "kp_bcread.c"
+#include "kp_str.c"
+#include "kp_mempool.c"
+#include "kp_tab.c"
+#include "kp_transport.c"
+#include "kp_vm.c"
+#include "kp_events.c"
+#include "lib_base.c"
+#include "lib_ansi.c"
+#include "lib_kdebug.c"
+#include "lib_timer.c"
+#include "lib_table.c"
+#include "lib_net.c"
+
-- 
1.8.1.4

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