proc: move sysrq-trigger out of fs/proc/

Move it into sysrq.c, along with the rest of the sysrq implementation.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 30 insertions, 26 deletions

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 2aa79ab1930d..dce4cc0e6953 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -23,6 +23,7 @@
 #include <linux/reboot.h>
 #include <linux/sysrq.h>
 #include <linux/kbd_kern.h>
+#include <linux/proc_fs.h>
 #include <linux/quotaops.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -534,3 +535,32 @@ int unregister_sysrq_key(int key, struct sysrq_key_op *op_p)
         return __sysrq_swap_key_ops(key, NULL, op_p);
 }
 EXPORT_SYMBOL(unregister_sysrq_key);
+
+#ifdef CONFIG_PROC_FS
+/*
+ * writing 'C' to /proc/sysrq-trigger is like sysrq-C
+ */
+static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
+                                   size_t count, loff_t *ppos)
+{
+        if (count) {
+                char c;
+
+                if (get_user(c, buf))
+                        return -EFAULT;
+                __handle_sysrq(c, NULL, 0);
+        }
+        return count;
+}
+
+static const struct file_operations proc_sysrq_trigger_operations = {
+        .write          = write_sysrq_trigger,
+};
+
+static int __init sysrq_init(void)
+{
+        proc_create("sysrq-trigger", S_IWUSR, NULL, &proc_sysrq_trigger_operations);
+        return 0;
+}
+module_init(sysrq_init);
+#endif
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index b675a49c1823..59ea42e1ef03 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -45,7 +45,6 @@
 #include <linux/blkdev.h>
 #include <linux/hugetlb.h>
 #include <linux/jiffies.h>
-#include <linux/sysrq.h>
 #include <linux/vmalloc.h>
 #include <linux/crash_dump.h>
 #include <linux/pid_namespace.h>
@@ -704,28 +703,6 @@ static int execdomains_read_proc(char *page, char **start, off_t off,
         return proc_calc_metrics(page, start, off, count, eof, len);
 }
 
-#ifdef CONFIG_MAGIC_SYSRQ
-/*
- * writing 'C' to /proc/sysrq-trigger is like sysrq-C
- */
-static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
-                                   size_t count, loff_t *ppos)
-{
-        if (count) {
-                char c;
-
-                if (get_user(c, buf))
-                        return -EFAULT;
-                __handle_sysrq(c, NULL, 0);
-        }
-        return count;
-}
-
-static const struct file_operations proc_sysrq_trigger_operations = {
-        .write          = write_sysrq_trigger,
-};
-#endif
-
 #ifdef CONFIG_PROC_PAGE_MONITOR
 #define KPMSIZE sizeof(u64)
 #define KPMMASK (KPMSIZE - 1)
@@ -934,7 +911,4 @@ void __init proc_misc_init(void)
 #ifdef CONFIG_PROC_VMCORE
         proc_vmcore = proc_create("vmcore", S_IRUSR, NULL, &proc_vmcore_operations);
 #endif
-#ifdef CONFIG_MAGIC_SYSRQ
-        proc_create("sysrq-trigger", S_IWUSR, NULL, &proc_sysrq_trigger_operations);
-#endif
 }