Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:

 - Oleg's "wait/ptrace: assume __WALL if the child is traced".  It's a
   kernel-based workaround for existing userspace issues.

 - A few hotfixes

 - befs cleanups

 - nilfs2 updates

 - sys_wait() changes

 - kexec updates

 - kdump

 - scripts/gdb updates

 - the last of the MM queue

 - a few other misc things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (84 commits)
  kgdb: depends on VT
  drm/amdgpu: make amdgpu_mn_get wait for mmap_sem killable
  drm/radeon: make radeon_mn_get wait for mmap_sem killable
  drm/i915: make i915_gem_mmap_ioctl wait for mmap_sem killable
  uprobes: wait for mmap_sem for write killable
  prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable
  exec: make exec path waiting for mmap_sem killable
  aio: make aio_setup_ring killable
  coredump: make coredump_wait wait for mmap_sem for write killable
  vdso: make arch_setup_additional_pages wait for mmap_sem for write killable
  ipc, shm: make shmem attach/detach wait for mmap_sem killable
  mm, fork: make dup_mmap wait for mmap_sem for write killable
  mm, proc: make clear_refs killable
  mm: make vm_brk killable
  mm, elf: handle vm_brk error
  mm, aout: handle vm_brk failures
  mm: make vm_munmap killable
  mm: make vm_mmap killable
  mm: make mmap_sem for write waits killable for mm syscalls
  MAINTAINERS: add co-maintainer for scripts/gdb
  ...

1 files changed, 30 insertions, 2 deletions

diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 0893b326a28b..50805874cfc3 100644
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -87,11 +87,24 @@ def get_target_endianness():
     return target_endianness
 
 
+def read_memoryview(inf, start, length):
+    return memoryview(inf.read_memory(start, length))
+
+
 def read_u16(buffer):
+    value = [0, 0]
+
+    if type(buffer[0]) is str:
+        value[0] = ord(buffer[0])
+        value[1] = ord(buffer[1])
+    else:
+        value[0] = buffer[0]
+        value[1] = buffer[1]
+
     if get_target_endianness() == LITTLE_ENDIAN:
-        return ord(buffer[0]) + (ord(buffer[1]) << 8)
+        return value[0] + (value[1] << 8)
     else:
-        return ord(buffer[1]) + (ord(buffer[0]) << 8)
+        return value[1] + (value[0] << 8)
 
 
 def read_u32(buffer):
@@ -154,3 +167,18 @@ def get_gdbserver_type():
         if gdbserver_type is not None and hasattr(gdb, 'events'):
             gdb.events.exited.connect(exit_handler)
     return gdbserver_type
+
+
+def gdb_eval_or_none(expresssion):
+    try:
+        return gdb.parse_and_eval(expresssion)
+    except:
+        return None
+
+
+def dentry_name(d):
+    parent = d['d_parent']
+    if parent == d or parent == 0:
+        return ""
+    p = dentry_name(d['d_parent']) + "/"
+    return p + d['d_iname'].string()