Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a couple of hotfixes

 - almost all of the rest of MM

 - lib/ updates

 - binfmt_elf updates

 - autofs updates

 - quite a lot of misc fixes and updates
    - reiserfs, fatfs
    - signals
    - exec
    - cpumask
    - rapidio
    - sysctl
    - pids
    - eventfd
    - gcov
    - panic
    - pps

 - gdb script updates

 - ipc updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (126 commits)
  mm: memcontrol: fix NUMA round-robin reclaim at intermediate level
  mm: memcontrol: fix recursive statistics correctness & scalabilty
  mm: memcontrol: move stat/event counting functions out-of-line
  mm: memcontrol: make cgroup stats and events query API explicitly local
  drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
  drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
  mm, memcg: rename ambiguously named memory.stat counters and functions
  arch: remove <asm/sizes.h> and <asm-generic/sizes.h>
  treewide: replace #include <asm/sizes.h> with #include <linux/sizes.h>
  fs/block_dev.c: Remove duplicate header
  fs/cachefiles/namei.c: remove duplicate header
  include/linux/sched/signal.h: replace `tsk' with `task'
  fs/coda/psdev.c: remove duplicate header
  ipc: do cyclic id allocation for the ipc object.
  ipc: conserve sequence numbers in ipcmni_extend mode
  ipc: allow boot time extension of IPCMNI from 32k to 16M
  ipc/mqueue: optimize msg_get()
  ipc/mqueue: remove redundant wq task assignment
  ipc: prevent lockup on alloc_msg and free_msg
  scripts/gdb: print cached rate in lx-clk-summary
  ...

1 files changed, 44 insertions, 0 deletions

diff --git a/scripts/gdb/linux/config.py b/scripts/gdb/linux/config.py
new file mode 100644
index 000000000000..90e1565b1967
--- /dev/null
+++ b/scripts/gdb/linux/config.py
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright 2019 Google LLC.
+
+import gdb
+import zlib
+
+from linux import utils
+
+
+class LxConfigDump(gdb.Command):
+    """Output kernel config to the filename specified as the command
+       argument. Equivalent to 'zcat /proc/config.gz > config.txt' on
+       a running target"""
+
+    def __init__(self):
+        super(LxConfigDump, self).__init__("lx-configdump", gdb.COMMAND_DATA,
+                                           gdb.COMPLETE_FILENAME)
+
+    def invoke(self, arg, from_tty):
+        if len(arg) == 0:
+            filename = "config.txt"
+        else:
+            filename = arg
+
+        try:
+            py_config_ptr = gdb.parse_and_eval("kernel_config_data + 8")
+            py_config_size = gdb.parse_and_eval(
+                    "sizeof(kernel_config_data) - 1 - 8 * 2")
+        except gdb.error as e:
+            raise gdb.GdbError("Can't find config, enable CONFIG_IKCONFIG?")
+
+        inf = gdb.inferiors()[0]
+        zconfig_buf = utils.read_memoryview(inf, py_config_ptr,
+                                            py_config_size).tobytes()
+
+        config_buf = zlib.decompress(zconfig_buf, 16)
+        with open(filename, 'wb') as f:
+            f.write(config_buf)
+
+        gdb.write("Dumped config to " + filename + "\n")
+
+
+LxConfigDump()