From edd63cb6b91024332d6983fc51058ac1ef0c081e Mon Sep 17 00:00:00 2001
From: Jason Wessel <jason.wessel@windriver.com>
Date: Wed, 21 Jul 2010 19:27:07 -0500
Subject: [PATCH] sysrq,kdb: Use __handle_sysrq() for kdb's sysrq function
The kdb code should not toggle the sysrq state in case an end user
wants to try and resume the normal kernel execution.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/char/sysrq.c | 2 +-
include/linux/sysrq.h | 1 +
kernel/debug/kdb/kdb_main.c | 3 +--
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 5d64e3acb000..878ac0c2cc68 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -493,7 +493,7 @@ static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p)
sysrq_key_table[i] = op_p;
}
-static void __handle_sysrq(int key, struct tty_struct *tty, int check_mask)
+void __handle_sysrq(int key, struct tty_struct *tty, int check_mask)
{
struct sysrq_key_op *op_p;
int orig_log_level;
diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 4496322e28dd..609e8ca5f534 100644
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -45,6 +45,7 @@ struct sysrq_key_op {
*/
void handle_sysrq(int key, struct tty_struct *tty);
+void __handle_sysrq(int key, struct tty_struct *tty, int check_mask);
int register_sysrq_key(int key, struct sysrq_key_op *op);
int unregister_sysrq_key(int key, struct sysrq_key_op *op);
struct sysrq_key_op *__sysrq_get_key_op(int key);
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 7e9bfd54a0db..ebe4a287419e 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -1820,9 +1820,8 @@ static int kdb_sr(int argc, const char **argv)
{
if (argc != 1)
return KDB_ARGCOUNT;
- sysrq_toggle_support(1);
kdb_trap_printk++;
- handle_sysrq(*argv[1], NULL);
+ __handle_sysrq(*argv[1], NULL, 0);
kdb_trap_printk--;
return 0;
--
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