Fix __pfn_to_page(pfn) for CONFIG_DISCONTIGMEM=y

[linux-2.6-omap-h63xx.git] / include / linux / sysrq.h

diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 9df8833670cbc9b4f01b3b622bc1074f40020d8e..98a1d8cfb73d1902d7f55466bc9aa034e8436b2b 100644 (file)
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -37,23 +37,37 @@ struct sysrq_key_op {
 
 #ifdef CONFIG_MAGIC_SYSRQ
 
+extern int sysrq_on(void);
+
+/*
+ * Do not use this one directly:
+ */
+extern int __sysrq_enabled;
+
 /* Generic SysRq interface -- you may call it from any device driver, supplying
  * ASCII code of the key, pointer to registers and kbd/tty structs (if they
  * are available -- else NULL's).
  */
 
-void handle_sysrq(int, struct tty_struct *);
-void __handle_sysrq(int, struct tty_struct *, int check_mask);
-int register_sysrq_key(int, struct sysrq_key_op *);
-int unregister_sysrq_key(int, 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);
 
 #else
 
+static inline int sysrq_on(void)
+{
+       return 0;
+}
 static inline int __reterr(void)
 {
        return -EINVAL;
 }
+static inline void handle_sysrq(int key, struct tty_struct *tty)
+{
+}
 
 #define register_sysrq_key(ig,nore) __reterr()
 #define unregister_sysrq_key(ig,nore) __reterr()