x86,kgdb: Add low level debug hook

[sfrench/cifs-2.6.git] / arch / x86 / kernel / kgdb.c

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index acba57169938e5f786d30b0a4d7f44ec3e134e20..95b89d4cb8f18f1595a430e0e6eaf8ac5f513487 100644 (file)
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -538,7 +538,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
                        return NOTIFY_DONE;
        }
 
-       if (kgdb_handle_exception(args->trapnr, args->signr, args->err, regs))
+       if (kgdb_handle_exception(args->trapnr, args->signr, cmd, regs))
                return NOTIFY_DONE;
 
        /* Must touch watchdog before return to normal operation */
@@ -546,6 +546,26 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
        return NOTIFY_STOP;
 }
 
+#ifdef CONFIG_KGDB_LOW_LEVEL_TRAP
+int kgdb_ll_trap(int cmd, const char *str,
+                struct pt_regs *regs, long err, int trap, int sig)
+{
+       struct die_args args = {
+               .regs   = regs,
+               .str    = str,
+               .err    = err,
+               .trapnr = trap,
+               .signr  = sig,
+
+       };
+
+       if (!kgdb_io_module_registered)
+               return NOTIFY_DONE;
+
+       return __kgdb_notify(&args, cmd);
+}
+#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
+
 static int
 kgdb_notify(struct notifier_block *self, unsigned long cmd, void *ptr)
 {