Merge tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb

Pull KGDB/KDB fixes and cleanups from Jason Wessel:
 "Cleanups
   - Clean up compile warnings in kgdboc.c and x86/kernel/kgdb.c
   - Add module event hooks for simplified debugging with gdb
 Fixes
   - Fix kdb to stop paging with 'q' on bta and dmesg
   - Fix for data that scrolls off the vga console due to line wrapping
     when using the kdb pager
 New
   - The debug core registers for kernel module events which allows a
     kernel aware gdb to automatically load symbols and break on entry
     to a kernel module
   - Allow kgdboc=kdb to setup kdb on the vga console"

* tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
  tty/console: fix warnings in drivers/tty/serial/kgdboc.c
  kdb,vt_console: Fix missed data due to pager overruns
  kdb: Fix dmesg/bta scroll to quit with 'q'
  kgdboc: Accept either kbd or kdb to activate the vga + keyboard kdb shell
  kgdb,x86: fix warning about unused variable
  mips,kgdb: fix recursive page fault with CONFIG_KPROBES
  kgdb: Add module event hooks

2 files changed, 15 insertions, 1 deletions

diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index c0b334327d93..10020547c60b 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -97,7 +97,8 @@ static void kgdboc_restore_input(void)
 
 static int kgdboc_register_kbd(char **cptr)
 {
-        if (strncmp(*cptr, "kbd", 3) == 0) {
+        if (strncmp(*cptr, "kbd", 3) == 0 ||
+                strncmp(*cptr, "kdb", 3) == 0) {
                 if (kdb_poll_idx < KDB_POLL_FUNC_MAX) {
                         kdb_poll_funcs[kdb_poll_idx] = kdb_get_kbd_char;
                         kdb_poll_idx++;
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 999ca63afdef..f87d7e8964bf 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -3442,6 +3442,19 @@ int con_debug_enter(struct vc_data *vc)
                         kdb_set(2, setargs);
                 }
         }
+        if (vc->vc_cols < 999) {
+                int colcount;
+                char cols[4];
+                const char *setargs[3] = {
+                        "set",
+                        "COLUMNS",
+                        cols,
+                };
+                if (kdbgetintenv(setargs[0], &colcount)) {
+                        snprintf(cols, 4, "%i", vc->vc_cols);
+                        kdb_set(2, setargs);
+                }
+        }
 #endif /* CONFIG_KGDB_KDB */
         return ret;
 }