Merge ../linus

1 files changed, 42 insertions, 42 deletions

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index ee3ca8f1768e..05810c8d20bc 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -35,14 +35,15 @@
 #include <linux/vt_kern.h>
 #include <linux/workqueue.h>
 #include <linux/kexec.h>
+#include <linux/irq.h>
 
 #include <asm/ptrace.h>
+#include <asm/irq_regs.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 +59,7 @@ 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 +76,7 @@ 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 +94,9 @@ 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,
@@ -110,9 +108,9 @@ 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();
         emergency_restart();
 }
@@ -123,8 +121,7 @@ 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();
 }
@@ -135,8 +132,7 @@ 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();
 }
@@ -148,8 +144,7 @@ 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();
 }
@@ -163,11 +158,11 @@ 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,
@@ -176,8 +171,7 @@ 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();
 }
@@ -188,8 +182,19 @@ 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_showstate_blocked(int key, struct tty_struct *tty)
+{
+        show_state_filter(TASK_UNINTERRUPTIBLE);
+}
+static struct sysrq_key_op sysrq_showstate_blocked_op = {
+        .handler        = sysrq_handle_showstate_blocked,
+        .help_msg       = "showBlockedTasks",
+        .action_msg     = "Show Blocked State",
+        .enable_mask    = SYSRQ_ENABLE_DUMP,
+};
+
+
+static void sysrq_handle_showmem(int key, struct tty_struct *tty)
 {
         show_mem();
 }
@@ -208,14 +213,13 @@ static void send_sig_all(int sig)
         struct task_struct *p;
 
         for_each_process(p) {
-                if (p->mm && p->pid != 1)
+                if (p->mm && !is_init(p))
                         /* Not swapper, init nor kernel thread */
                         force_sig(sig, p);
         }
 }
 
-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;
@@ -227,16 +231,15 @@ static struct sysrq_key_op sysrq_term_op = {
         .enable_mask    = SYSRQ_ENABLE_SIGNAL,
 };
 
-static void moom_callback(void *ignored)
+static void moom_callback(struct work_struct *ignored)
 {
         out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL],
                         GFP_KERNEL, 0);
 }
 
-static DECLARE_WORK(moom_work, moom_callback, NULL);
+static DECLARE_WORK(moom_work, moom_callback);
 
-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);
 }
@@ -246,8 +249,7 @@ 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;
@@ -259,8 +261,7 @@ 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();
 }
@@ -315,7 +316,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
         /* May be assigned at init time by SMP VOYAGER */
         NULL,                           /* v */
         NULL,                           /* w */
-        NULL,                           /* x */
+        &sysrq_showstate_blocked_op,    /* x */
         NULL,                           /* y */
         NULL                            /* z */
 };
@@ -360,8 +361,7 @@ 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;
@@ -383,7 +383,7 @@ 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");
                 }
@@ -412,11 +412,11 @@ 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);