Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / drivers / char / sysrq.c

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 39cc318..9e9bad8 100644 (file)
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -36,6 +36,7 @@
 #include <linux/kexec.h>
 #include <linux/irq.h>
 #include <linux/hrtimer.h>
+#include <linux/oom.h>
 
 #include <asm/ptrace.h>
 #include <asm/irq_regs.h>
@@ -107,12 +108,12 @@ static void sysrq_handle_unraw(int key, struct tty_struct *tty)
        struct kbd_struct *kbd = &kbd_table[fg_console];
 
        if (kbd)
-               kbd->kbdmode = VC_XLATE;
+               kbd->kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
 }
 static struct sysrq_key_op sysrq_unraw_op = {
        .handler        = sysrq_handle_unraw,
        .help_msg       = "unRaw",
-       .action_msg     = "Keyboard mode set to XLATE",
+       .action_msg     = "Keyboard mode set to system default",
        .enable_mask    = SYSRQ_ENABLE_KEYBOARD,
 };
 #else
@@ -195,6 +196,48 @@ static struct sysrq_key_op sysrq_showlocks_op = {
 #define sysrq_showlocks_op (*(struct sysrq_key_op *)0)
 #endif
 
+#ifdef CONFIG_SMP
+static DEFINE_SPINLOCK(show_lock);
+
+static void showacpu(void *dummy)
+{
+       unsigned long flags;
+
+       /* Idle CPUs have no interesting backtrace. */
+       if (idle_cpu(smp_processor_id()))
+               return;
+
+       spin_lock_irqsave(&show_lock, flags);
+       printk(KERN_INFO "CPU%d:\n", smp_processor_id());
+       show_stack(NULL, NULL);
+       spin_unlock_irqrestore(&show_lock, flags);
+}
+
+static void sysrq_showregs_othercpus(struct work_struct *dummy)
+{
+       smp_call_function(showacpu, NULL, 0, 0);
+}
+
+static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus);
+
+static void sysrq_handle_showallcpus(int key, struct tty_struct *tty)
+{
+       struct pt_regs *regs = get_irq_regs();
+       if (regs) {
+               printk(KERN_INFO "CPU%d:\n", smp_processor_id());
+               show_regs(regs);
+       }
+       schedule_work(&sysrq_showallcpus);
+}
+
+static struct sysrq_key_op sysrq_showallcpus_op = {
+       .handler        = sysrq_handle_showallcpus,
+       .help_msg       = "aLlcpus",
+       .action_msg     = "Show backtrace of all active CPUs",
+       .enable_mask    = SYSRQ_ENABLE_DUMP,
+};
+#endif
+
 static void sysrq_handle_showregs(int key, struct tty_struct *tty)
 {
        struct pt_regs *regs = get_irq_regs();
@@ -250,7 +293,7 @@ static void send_sig_all(int sig)
        struct task_struct *p;
 
        for_each_process(p) {
-               if (p->mm && !is_init(p))
+               if (p->mm && !is_global_init(p))
                        /* Not swapper, init nor kernel thread */
                        force_sig(sig, p);
        }
@@ -270,8 +313,7 @@ static struct sysrq_key_op sysrq_term_op = {
 
 static void moom_callback(struct work_struct *ignored)
 {
-       out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL],
-                       GFP_KERNEL, 0);
+       out_of_memory(node_zonelist(0, GFP_KERNEL), GFP_KERNEL, 0);
 }
 
 static DECLARE_WORK(moom_work, moom_callback);
@@ -340,7 +382,11 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
        &sysrq_kill_op,                 /* i */
        NULL,                           /* j */
        &sysrq_SAK_op,                  /* k */
+#ifdef CONFIG_SMP
+       &sysrq_showallcpus_op,          /* l */
+#else
        NULL,                           /* l */
+#endif
        &sysrq_showmem_op,              /* m */
        &sysrq_unrt_op,                 /* n */
        /* o: This will often be registered as 'Off' at init time */