Merge tag 'v3.9-rc3' into v4l_for_linus

Linux 3.9-rc3

* tag 'v3.9-rc3': (11231 commits)
  Linux 3.9-rc3
  perf,x86: fix link failure for non-Intel configs
  perf,x86: fix wrmsr_on_cpu() warning on suspend/resume
  Btrfs: fix warning of free_extent_map
  perf,x86: fix kernel crash with PEBS/BTS after suspend/resume
  ALSA: hda - Fix missing EAPD/GPIO setup for Cirrus codecs
  sound: sequencer: cap array index in seq_chn_common_event()
  mfd: twl4030-madc: Remove __exit_p annotation
  ALSA: hda/ca0132 - Remove extra setting of dsp_state.
  ALSA: hda/ca0132 - Check download state of DSP.
  ALSA: hda/ca0132 - Check if dspload_image succeeded.
  mm/fremap.c: fix possible oops on error path
  list: Fix double fetch of pointer in hlist_entry_safe()
  Btrfs: fix warning when creating snapshots
  Btrfs: return as soon as possible when edquot happens
  Btrfs: return EIO if we have extent tree corruption
  btrfs: use rcu_barrier() to wait for bdev puts at unmount
  Btrfs: remove btrfs_try_spin_lock
  Btrfs: get better concurrency for snapshot-aware defrag work
  hwmon: (pmbus/ltc2978) Fix temperature reporting
  ...

1 files changed, 18 insertions, 7 deletions

diff --git a/kernel/debug/kdb/kdb_debugger.c b/kernel/debug/kdb/kdb_debugger.c
index be7b33b73d30..328d18ef31e4 100644
--- a/kernel/debug/kdb/kdb_debugger.c
+++ b/kernel/debug/kdb/kdb_debugger.c
@@ -34,6 +34,22 @@ EXPORT_SYMBOL_GPL(kdb_poll_idx);
 
 static struct kgdb_state *kdb_ks;
 
+int kdb_common_init_state(struct kgdb_state *ks)
+{
+        kdb_initial_cpu = atomic_read(&kgdb_active);
+        kdb_current_task = kgdb_info[ks->cpu].task;
+        kdb_current_regs = kgdb_info[ks->cpu].debuggerinfo;
+        return 0;
+}
+
+int kdb_common_deinit_state(void)
+{
+        kdb_initial_cpu = -1;
+        kdb_current_task = NULL;
+        kdb_current_regs = NULL;
+        return 0;
+}
+
 int kdb_stub(struct kgdb_state *ks)
 {
         int error = 0;
@@ -94,13 +110,10 @@ int kdb_stub(struct kgdb_state *ks)
         }
         /* Set initial kdb state variables */
         KDB_STATE_CLEAR(KGDB_TRANS);
-        kdb_initial_cpu = atomic_read(&kgdb_active);
-        kdb_current_task = kgdb_info[ks->cpu].task;
-        kdb_current_regs = kgdb_info[ks->cpu].debuggerinfo;
+        kdb_common_init_state(ks);
         /* Remove any breakpoints as needed by kdb and clear single step */
         kdb_bp_remove();
         KDB_STATE_CLEAR(DOING_SS);
-        KDB_STATE_CLEAR(DOING_SSB);
         KDB_STATE_SET(PAGER);
         /* zero out any offline cpu data */
         for_each_present_cpu(i) {
@@ -125,9 +138,7 @@ int kdb_stub(struct kgdb_state *ks)
          * Upon exit from the kdb main loop setup break points and restart
          * the system based on the requested continue state
          */
-        kdb_initial_cpu = -1;
-        kdb_current_task = NULL;
-        kdb_current_regs = NULL;
+        kdb_common_deinit_state();
         KDB_STATE_CLEAR(PAGER);
         kdbnearsym_cleanup();
         if (error == KDB_CMD_KGDB) {