linux-kernel - [PATCH v12 06/28] module: Do not inline do_init

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Date:	Fri, 30 Jan 2015 08:24:35 +0100
From:	Jan Kiszka <jan.kiszka@...mens.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Jason Wessel <jason.wessel@...driver.com>,
	kgdb-bugreport@...ts.sourceforge.net,
	Andi Kleen <andi@...stfloor.org>,
	Ben Widawsky <ben@...dawsk.net>, Borislav Petkov <bp@...e.de>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: [PATCH v12 06/28] module: Do not inline do_init_module

This provides a reliable breakpoint target, required for automatic
symbol loading via the gdb helper command 'lx-symbols'.

CC: Rusty Russell <rusty@...tcorp.com.au>
Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
---
 kernel/module.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index d856e96..2df6cec 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3011,8 +3011,13 @@ static void do_free_init(struct rcu_head *head)
 	kfree(m);
 }
 
-/* This is where the real work happens */
-static int do_init_module(struct module *mod)
+/*
+ * This is where the real work happens.
+ *
+ * Keep it uninlined to provide a reliable breakpoint target, e.g. for the gdb
+ * helper command 'lx-symbols'.
+ */
+static noinline int do_init_module(struct module *mod)
 {
 	int ret = 0;
 	struct mod_initfree *freeinit;
-- 
2.1.4

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