1 files changed, 24 insertions, 38 deletions

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 6b4d4d1e343d..4c0e08685705 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -35,14 +35,14 @@
 #include <linux/vt_kern.h>
 #include <linux/workqueue.h>
 #include <linux/kexec.h>
+#include <linux/irq.h>
 
 #include <asm/ptrace.h>
 
 /* Whether we react on sysrq keys or just ignore them */
 int sysrq_enabled = 1;
 
-static void sysrq_handle_loglevel(int key, struct pt_regs *pt_regs,
-                                  struct tty_struct *tty)
+static void sysrq_handle_loglevel(int key, struct tty_struct *tty)
 {
         int i;
         i = key - '0';
@@ -58,8 +58,7 @@ static struct sysrq_key_op sysrq_loglevel_op = {
 };
 
 #ifdef CONFIG_VT
-static void sysrq_handle_SAK(int key, struct pt_regs *pt_regs,
-                             struct tty_struct *tty)
+static void sysrq_handle_SAK(int key, struct tty_struct *tty)
 {
         if (tty)
                 do_SAK(tty);
@@ -76,8 +75,7 @@ static struct sysrq_key_op sysrq_SAK_op = {
 #endif
 
 #ifdef CONFIG_VT
-static void sysrq_handle_unraw(int key, struct pt_regs *pt_regs,
-                               struct tty_struct *tty)
+static void sysrq_handle_unraw(int key, struct tty_struct *tty)
 {
         struct kbd_struct *kbd = &kbd_table[fg_console];
 
@@ -95,10 +93,9 @@ static struct sysrq_key_op sysrq_unraw_op = {
 #endif /* CONFIG_VT */
 
 #ifdef CONFIG_KEXEC
-static void sysrq_handle_crashdump(int key, struct pt_regs *pt_regs,
-                                struct tty_struct *tty)
+static void sysrq_handle_crashdump(int key, struct tty_struct *tty)
 {
-        crash_kexec(pt_regs);
+        crash_kexec(get_irq_regs());
 }
 static struct sysrq_key_op sysrq_crashdump_op = {
         .handler        = sysrq_handle_crashdump,
@@ -110,8 +107,7 @@ static struct sysrq_key_op sysrq_crashdump_op = {
 #define sysrq_crashdump_op (*(struct sysrq_key_op *)0)
 #endif
 
-static void sysrq_handle_reboot(int key, struct pt_regs *pt_regs,
-                                struct tty_struct *tty)
+static void sysrq_handle_reboot(int key, struct tty_struct *tty)
 {
         lockdep_off();
         local_irq_enable();
@@ -124,8 +120,7 @@ static struct sysrq_key_op sysrq_reboot_op = {
         .enable_mask    = SYSRQ_ENABLE_BOOT,
 };
 
-static void sysrq_handle_sync(int key, struct pt_regs *pt_regs,
-                              struct tty_struct *tty)
+static void sysrq_handle_sync(int key, struct tty_struct *tty)
 {
         emergency_sync();
 }
@@ -136,8 +131,7 @@ static struct sysrq_key_op sysrq_sync_op = {
         .enable_mask    = SYSRQ_ENABLE_SYNC,
 };
 
-static void sysrq_handle_mountro(int key, struct pt_regs *pt_regs,
-                                 struct tty_struct *tty)
+static void sysrq_handle_mountro(int key, struct tty_struct *tty)
 {
         emergency_remount();
 }
@@ -149,8 +143,7 @@ static struct sysrq_key_op sysrq_mountro_op = {
 };
 
 #ifdef CONFIG_LOCKDEP
-static void sysrq_handle_showlocks(int key, struct pt_regs *pt_regs,
-                                struct tty_struct *tty)
+static void sysrq_handle_showlocks(int key, struct tty_struct *tty)
 {
         debug_show_all_locks();
 }
@@ -164,11 +157,11 @@ static struct sysrq_key_op sysrq_showlocks_op = {
 #define sysrq_showlocks_op (*(struct sysrq_key_op *)0)
 #endif
 
-static void sysrq_handle_showregs(int key, struct pt_regs *pt_regs,
-                                  struct tty_struct *tty)
+static void sysrq_handle_showregs(int key, struct tty_struct *tty)
 {
-        if (pt_regs)
-                show_regs(pt_regs);
+        struct pt_regs *regs = get_irq_regs();
+        if (regs)
+                show_regs(regs);
 }
 static struct sysrq_key_op sysrq_showregs_op = {
         .handler        = sysrq_handle_showregs,
@@ -177,8 +170,7 @@ static struct sysrq_key_op sysrq_showregs_op = {
         .enable_mask    = SYSRQ_ENABLE_DUMP,
 };
 
-static void sysrq_handle_showstate(int key, struct pt_regs *pt_regs,
-                                   struct tty_struct *tty)
+static void sysrq_handle_showstate(int key, struct tty_struct *tty)
 {
         show_state();
 }
@@ -189,8 +181,7 @@ static struct sysrq_key_op sysrq_showstate_op = {
         .enable_mask    = SYSRQ_ENABLE_DUMP,
 };
 
-static void sysrq_handle_showmem(int key, struct pt_regs *pt_regs,
-                                 struct tty_struct *tty)
+static void sysrq_handle_showmem(int key, struct tty_struct *tty)
 {
         show_mem();
 }
@@ -215,8 +206,7 @@ static void send_sig_all(int sig)
         }
 }
 
-static void sysrq_handle_term(int key, struct pt_regs *pt_regs,
-                              struct tty_struct *tty)
+static void sysrq_handle_term(int key, struct tty_struct *tty)
 {
         send_sig_all(SIGTERM);
         console_loglevel = 8;
@@ -236,8 +226,7 @@ static void moom_callback(void *ignored)
 
 static DECLARE_WORK(moom_work, moom_callback, NULL);
 
-static void sysrq_handle_moom(int key, struct pt_regs *pt_regs,
-                              struct tty_struct *tty)
+static void sysrq_handle_moom(int key, struct tty_struct *tty)
 {
         schedule_work(&moom_work);
 }
@@ -247,8 +236,7 @@ static struct sysrq_key_op sysrq_moom_op = {
         .action_msg     = "Manual OOM execution",
 };
 
-static void sysrq_handle_kill(int key, struct pt_regs *pt_regs,
-                              struct tty_struct *tty)
+static void sysrq_handle_kill(int key, struct tty_struct *tty)
 {
         send_sig_all(SIGKILL);
         console_loglevel = 8;
@@ -260,8 +248,7 @@ static struct sysrq_key_op sysrq_kill_op = {
         .enable_mask    = SYSRQ_ENABLE_SIGNAL,
 };
 
-static void sysrq_handle_unrt(int key, struct pt_regs *pt_regs,
-                                struct tty_struct *tty)
+static void sysrq_handle_unrt(int key, struct tty_struct *tty)
 {
         normalize_rt_tasks();
 }
@@ -361,8 +348,7 @@ static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p)
  * This is the non-locking version of handle_sysrq.  It must/can only be called
  * by sysrq key handlers, as they are inside of the lock
  */
-void __handle_sysrq(int key, struct pt_regs *pt_regs, 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;
@@ -384,7 +370,7 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty,
                     (sysrq_enabled & op_p->enable_mask)) {
                         printk("%s\n", op_p->action_msg);
                         console_loglevel = orig_log_level;
-                        op_p->handler(key, pt_regs, tty);
+                        op_p->handler(key, tty);
                 } else {
                         printk("This sysrq operation is disabled.\n");
                 }
@@ -413,11 +399,11 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty,
  * This function is called by the keyboard handler when SysRq is pressed
  * and any other keycode arrives.
  */
-void handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty)
+void handle_sysrq(int key, struct tty_struct *tty)
 {
         if (!sysrq_enabled)
                 return;
-        __handle_sysrq(key, pt_regs, tty, 1);
+        __handle_sysrq(key, tty, 1);
 }
 EXPORT_SYMBOL(handle_sysrq);