Merge /spare/repo/linux-2.6/

1 files changed, 36 insertions, 3 deletions

diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index 1861173bd4f6..4440c8343fa4 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -21,12 +21,26 @@
 #include <asm/intrinsics.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
+#include <asm/kdebug.h>
 
 extern spinlock_t timerlist_lock;
 
 fpswa_interface_t *fpswa_interface;
 EXPORT_SYMBOL(fpswa_interface);
 
+struct notifier_block *ia64die_chain;
+static DEFINE_SPINLOCK(die_notifier_lock);
+
+int register_die_notifier(struct notifier_block *nb)
+{
+        int err = 0;
+        unsigned long flags;
+        spin_lock_irqsave(&die_notifier_lock, flags);
+        err = notifier_chain_register(&ia64die_chain, nb);
+        spin_unlock_irqrestore(&die_notifier_lock, flags);
+        return err;
+}
+
 void __init
 trap_init (void)
 {
@@ -76,14 +90,16 @@ die (const char *str, struct pt_regs *regs, long err)
                 .lock_owner_depth =     0
         };
         static int die_counter;
+        int cpu = get_cpu();
 
-        if (die.lock_owner != smp_processor_id()) {
+        if (die.lock_owner != cpu) {
                 console_verbose();
                 spin_lock_irq(&die.lock);
-                die.lock_owner = smp_processor_id();
+                die.lock_owner = cpu;
                 die.lock_owner_depth = 0;
                 bust_spinlocks(1);
         }
+        put_cpu();
 
         if (++die.lock_owner_depth < 3) {
                 printk("%s[%d]: %s %ld [%d]\n",
@@ -137,6 +153,10 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
 
         switch (break_num) {
               case 0: /* unknown error (used by GCC for __builtin_abort()) */
+                if (notify_die(DIE_BREAK, "break 0", regs, break_num, TRAP_BRKPT, SIGTRAP)
+                                == NOTIFY_STOP) {
+                        return;
+                }
                 die_if_kernel("bugcheck!", regs, break_num);
                 sig = SIGILL; code = ILL_ILLOPC;
                 break;
@@ -189,6 +209,15 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
                 sig = SIGILL; code = __ILL_BNDMOD;
                 break;
 
+              case 0x80200:
+              case 0x80300:
+                if (notify_die(DIE_BREAK, "kprobe", regs, break_num, TRAP_BRKPT, SIGTRAP)
+                                == NOTIFY_STOP) {
+                        return;
+                }
+                sig = SIGTRAP; code = TRAP_BRKPT;
+                break;
+
               default:
                 if (break_num < 0x40000 || break_num > 0x100000)
                         die_if_kernel("Bad break", regs, break_num);
@@ -548,7 +577,11 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 #endif
                         break;
                       case 35: siginfo.si_code = TRAP_BRANCH; ifa = 0; break;
-                      case 36: siginfo.si_code = TRAP_TRACE; ifa = 0; break;
+                      case 36:
+                              if (notify_die(DIE_SS, "ss", &regs, vector,
+                                             vector, SIGTRAP) == NOTIFY_STOP)
+                                      return;
+                              siginfo.si_code = TRAP_TRACE; ifa = 0; break;
                 }
                 siginfo.si_signo = SIGTRAP;
                 siginfo.si_errno = 0;