Merge branch 'for-2.6.26' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer...

[linux-2.6] / arch / s390 / kernel / traps.c

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 9452a205629b0131897e5d02443c971fce3f020d..4584d81984c0f25dabb4bffc17371866081ed6a5 100644 (file)
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -42,11 +42,8 @@
 #include <asm/s390_ext.h>
 #include <asm/lowcore.h>
 #include <asm/debug.h>
+#include "entry.h"
 
-/* Called from entry.S only */
-extern void handle_per_exception(struct pt_regs *regs);
-
-typedef void pgm_check_handler_t(struct pt_regs *, long);
 pgm_check_handler_t *pgm_check_table[128];
 
 #ifdef CONFIG_SYSCTL
@@ -116,7 +113,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
        }
 }
 
-void show_trace(struct task_struct *task, unsigned long *stack)
+static void show_trace(struct task_struct *task, unsigned long *stack)
 {
        register unsigned long __r15 asm ("15");
        unsigned long sp;
@@ -137,7 +134,6 @@ void show_trace(struct task_struct *task, unsigned long *stack)
        else
                __show_trace(sp, S390_lowcore.thread_info,
                             S390_lowcore.thread_info + THREAD_SIZE);
-       printk("\n");
        if (!task)
                task = current;
        debug_show_held_locks(task);
@@ -165,6 +161,15 @@ void show_stack(struct task_struct *task, unsigned long *sp)
        show_trace(task, sp);
 }
 
+static void show_last_breaking_event(struct pt_regs *regs)
+{
+#ifdef CONFIG_64BIT
+       printk("Last Breaking-Event-Address:\n");
+       printk(" [<%016lx>] ", regs->args[0] & PSW_ADDR_INSN);
+       print_symbol("%s\n", regs->args[0] & PSW_ADDR_INSN);
+#endif
+}
+
 /*
  * The architecture-independent dump_stack generator
  */
@@ -218,6 +223,24 @@ void show_registers(struct pt_regs *regs)
        show_code(regs);
 }      
 
+void show_regs(struct pt_regs *regs)
+{
+       print_modules();
+       printk("CPU: %d %s %s %.*s\n",
+              task_thread_info(current)->cpu, print_tainted(),
+              init_utsname()->release,
+              (int)strcspn(init_utsname()->version, " "),
+              init_utsname()->version);
+       printk("Process %s (pid: %d, task: %p, ksp: %p)\n",
+              current->comm, current->pid, current,
+              (void *) current->thread.ksp);
+       show_registers(regs);
+       /* Show stack backtrace if pt_regs is from kernel mode */
+       if (!(regs->psw.mask & PSW_MASK_PSTATE))
+               show_trace(NULL, (unsigned long *) regs->gprs[15]);
+       show_last_breaking_event(regs);
+}
+
 /* This is called from fs/proc/array.c */
 void task_show_regs(struct seq_file *m, struct task_struct *task)
 {