19 files changed, 959 insertions, 491 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 15b196fc2f49..179219845dfc 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -108,16 +108,20 @@ as-option = $(call try-run,\
 as-instr = $(call try-run,\
 	printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" -,$(2),$(3))
 
+# Do not attempt to build with gcc plugins during cc-option tests.
+# (And this uses delayed resolution so the flags will be up to date.)
+CC_OPTION_CFLAGS = $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
+
 # cc-option
 # Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
 
 cc-option = $(call try-run,\
-	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
+	$(CC) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
 
 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
 cc-option-yn = $(call try-run,\
-	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
+	$(CC) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
 
 # cc-option-align
 # Prefix align with either -falign or -malign
@@ -127,7 +131,7 @@ cc-option-align = $(subst -functions=0,,\
 # cc-disable-warning
 # Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
 cc-disable-warning = $(call try-run,\
-	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
+	$(CC) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
 
 # cc-name
 # Expands to either gcc or clang
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index 5e22b60589c1..61f0e6db909b 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -19,25 +19,42 @@ ifdef CONFIG_GCC_PLUGINS
     endif
   endif
 
-  GCC_PLUGINS_CFLAGS := $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y))
+  GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
 
-  export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN SANCOV_PLUGIN
+  export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR SANCOV_PLUGIN
 
+  ifneq ($(PLUGINCC),)
+    # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
+    GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
+  endif
+
+  KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+  GCC_PLUGIN := $(gcc-plugin-y)
+  GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
+endif
+
+# If plugins aren't supported, abort the build before hard-to-read compiler
+# errors start getting spewed by the main build.
+PHONY += gcc-plugins-check
+gcc-plugins-check: FORCE
+ifdef CONFIG_GCC_PLUGINS
   ifeq ($(PLUGINCC),)
     ifneq ($(GCC_PLUGINS_CFLAGS),)
       ifeq ($(call cc-ifversion, -ge, 0405, y), y)
-        PLUGINCC := $(shell $(CONFIG_SHELL) -x $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)")
-        $(warning warning: your gcc installation does not support plugins, perhaps the necessary headers are missing?)
+	$(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
+	@echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
       else
-        $(warning warning: your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least)
+	@echo "Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5" >&2 && exit 1
       endif
     endif
-  else
-    # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
-    GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
   endif
+endif
+	@:
 
-  KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
-  GCC_PLUGIN := $(gcc-plugin-y)
-
+# Actually do the build, if requested.
+PHONY += gcc-plugins
+gcc-plugins: scripts_basic gcc-plugins-check
+ifdef CONFIG_GCC_PLUGINS
+	$(Q)$(MAKE) $(build)=scripts/gcc-plugins
 endif
+	@:
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 8ab68679cfb5..dd779c40c8e6 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -3,7 +3,6 @@ ifdef CONFIG_UBSAN
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=vla-bound)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=null)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
@@ -14,4 +13,8 @@ ifdef CONFIG_UBSAN
 ifdef CONFIG_UBSAN_ALIGNMENT
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
 endif
+
+ifdef CONFIG_UBSAN_NULL
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=null)
+endif
 endif
diff --git a/scripts/checkkconfigsymbols.py b/scripts/checkkconfigsymbols.py
index df643f60bb41..a32e4da4c117 100755
--- a/scripts/checkkconfigsymbols.py
+++ b/scripts/checkkconfigsymbols.py
@@ -1,98 +1,99 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 
 """Find Kconfig symbols that are referenced but not defined."""
 
-# (c) 2014-2015 Valentin Rothberg <valentinrothberg@gmail.com>
+# (c) 2014-2016 Valentin Rothberg <valentinrothberg@gmail.com>
 # (c) 2014 Stefan Hengelein <stefan.hengelein@fau.de>
 #
 # Licensed under the terms of the GNU GPL License version 2
 
 
+import argparse
 import difflib
 import os
 import re
 import signal
+import subprocess
 import sys
 from multiprocessing import Pool, cpu_count
-from optparse import OptionParser
-from subprocess import Popen, PIPE, STDOUT
 
 
 # regex expressions
 OPERATORS = r"&|\(|\)|\||\!"
-FEATURE = r"(?:\w*[A-Z0-9]\w*){2,}"
-DEF = r"^\s*(?:menu){,1}config\s+(" + FEATURE + r")\s*"
-EXPR = r"(?:" + OPERATORS + r"|\s|" + FEATURE + r")+"
+SYMBOL = r"(?:\w*[A-Z0-9]\w*){2,}"
+DEF = r"^\s*(?:menu){,1}config\s+(" + SYMBOL + r")\s*"
+EXPR = r"(?:" + OPERATORS + r"|\s|" + SYMBOL + r")+"
 DEFAULT = r"default\s+.*?(?:if\s.+){,1}"
 STMT = r"^\s*(?:if|select|depends\s+on|(?:" + DEFAULT + r"))\s+" + EXPR
-SOURCE_FEATURE = r"(?:\W|\b)+[D]{,1}CONFIG_(" + FEATURE + r")"
+SOURCE_SYMBOL = r"(?:\W|\b)+[D]{,1}CONFIG_(" + SYMBOL + r")"
 
 # regex objects
 REGEX_FILE_KCONFIG = re.compile(r".*Kconfig[\.\w+\-]*$")
-REGEX_FEATURE = re.compile(r'(?!\B)' + FEATURE + r'(?!\B)')
-REGEX_SOURCE_FEATURE = re.compile(SOURCE_FEATURE)
+REGEX_SYMBOL = re.compile(r'(?!\B)' + SYMBOL + r'(?!\B)')
+REGEX_SOURCE_SYMBOL = re.compile(SOURCE_SYMBOL)
 REGEX_KCONFIG_DEF = re.compile(DEF)
 REGEX_KCONFIG_EXPR = re.compile(EXPR)
 REGEX_KCONFIG_STMT = re.compile(STMT)
 REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
-REGEX_FILTER_FEATURES = re.compile(r"[A-Za-z0-9]$")
+REGEX_FILTER_SYMBOLS = re.compile(r"[A-Za-z0-9]$")
 REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
 REGEX_QUOTES = re.compile("(\"(.*?)\")")
 
 
 def parse_options():
     """The user interface of this module."""
-    usage = "%prog [options]\n\n"                                              \
-            "Run this tool to detect Kconfig symbols that are referenced but " \
-            "not defined in\nKconfig.  The output of this tool has the "       \
-            "format \'Undefined symbol\\tFile list\'\n\n"                      \
-            "If no option is specified, %prog will default to check your\n"    \
-            "current tree.  Please note that specifying commits will "         \
-            "\'git reset --hard\'\nyour current tree!  You may save "          \
-            "uncommitted changes to avoid losing data."
-
-    parser = OptionParser(usage=usage)
-
-    parser.add_option('-c', '--commit', dest='commit', action='store',
-                      default="",
-                      help="Check if the specified commit (hash) introduces "
-                           "undefined Kconfig symbols.")
-
-    parser.add_option('-d', '--diff', dest='diff', action='store',
-                      default="",
-                      help="Diff undefined symbols between two commits.  The "
-                           "input format bases on Git log's "
-                           "\'commmit1..commit2\'.")
-
-    parser.add_option('-f', '--find', dest='find', action='store_true',
-                      default=False,
-                      help="Find and show commits that may cause symbols to be "
-                           "missing.  Required to run with --diff.")
-
-    parser.add_option('-i', '--ignore', dest='ignore', action='store',
-                      default="",
-                      help="Ignore files matching this pattern.  Note that "
-                           "the pattern needs to be a Python regex.  To "
-                           "ignore defconfigs, specify -i '.*defconfig'.")
-
-    parser.add_option('-s', '--sim', dest='sim', action='store', default="",
-                      help="Print a list of maximum 10 string-similar symbols.")
-
-    parser.add_option('', '--force', dest='force', action='store_true',
-                      default=False,
-                      help="Reset current Git tree even when it's dirty.")
-
-    (opts, _) = parser.parse_args()
-
-    if opts.commit and opts.diff:
+    usage = "Run this tool to detect Kconfig symbols that are referenced but " \
+            "not defined in Kconfig.  If no option is specified, "             \
+            "checkkconfigsymbols defaults to check your current tree.  "       \
+            "Please note that specifying commits will 'git reset --hard\' "    \
+            "your current tree!  You may save uncommitted changes to avoid "   \
+            "losing data."
+
+    parser = argparse.ArgumentParser(description=usage)
+
+    parser.add_argument('-c', '--commit', dest='commit', action='store',
+                        default="",
+                        help="check if the specified commit (hash) introduces "
+                             "undefined Kconfig symbols")
+
+    parser.add_argument('-d', '--diff', dest='diff', action='store',
+                        default="",
+                        help="diff undefined symbols between two commits "
+                             "(e.g., -d commmit1..commit2)")
+
+    parser.add_argument('-f', '--find', dest='find', action='store_true',
+                        default=False,
+                        help="find and show commits that may cause symbols to be "
+                             "missing (required to run with --diff)")
+
+    parser.add_argument('-i', '--ignore', dest='ignore', action='store',
+                        default="",
+                        help="ignore files matching this Python regex "
+                             "(e.g., -i '.*defconfig')")
+
+    parser.add_argument('-s', '--sim', dest='sim', action='store', default="",
+                        help="print a list of max. 10 string-similar symbols")
+
+    parser.add_argument('--force', dest='force', action='store_true',
+                        default=False,
+                        help="reset current Git tree even when it's dirty")
+
+    parser.add_argument('--no-color', dest='color', action='store_false',
+                        default=True,
+                        help="don't print colored output (default when not "
+                             "outputting to a terminal)")
+
+    args = parser.parse_args()
+
+    if args.commit and args.diff:
         sys.exit("Please specify only one option at once.")
 
-    if opts.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", opts.diff):
+    if args.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", args.diff):
         sys.exit("Please specify valid input in the following format: "
                  "\'commit1..commit2\'")
 
-    if opts.commit or opts.diff:
-        if not opts.force and tree_is_dirty():
+    if args.commit or args.diff:
+        if not args.force and tree_is_dirty():
             sys.exit("The current Git tree is dirty (see 'git status').  "
                      "Running this script may\ndelete important data since it "
                      "calls 'git reset --hard' for some performance\nreasons. "
@@ -100,138 +101,148 @@ def parse_options():
                      "'--force' if you\nwant to ignore this warning and "
                      "continue.")
 
-    if opts.commit:
-        opts.find = False
+    if args.commit:
+        args.find = False
 
-    if opts.ignore:
+    if args.ignore:
         try:
-            re.match(opts.ignore, "this/is/just/a/test.c")
+            re.match(args.ignore, "this/is/just/a/test.c")
         except:
             sys.exit("Please specify a valid Python regex.")
 
-    return opts
+    return args
 
 
 def main():
     """Main function of this module."""
-    opts = parse_options()
+    args = parse_options()
 
-    if opts.sim and not opts.commit and not opts.diff:
-        sims = find_sims(opts.sim, opts.ignore)
+    global COLOR
+    COLOR = args.color and sys.stdout.isatty()
+
+    if args.sim and not args.commit and not args.diff:
+        sims = find_sims(args.sim, args.ignore)
         if sims:
-            print "%s: %s" % (yel("Similar symbols"), ', '.join(sims))
+            print("%s: %s" % (yel("Similar symbols"), ', '.join(sims)))
         else:
-            print "%s: no similar symbols found" % yel("Similar symbols")
+            print("%s: no similar symbols found" % yel("Similar symbols"))
         sys.exit(0)
 
     # dictionary of (un)defined symbols
     defined = {}
     undefined = {}
 
-    if opts.commit or opts.diff:
+    if args.commit or args.diff:
         head = get_head()
 
         # get commit range
         commit_a = None
         commit_b = None
-        if opts.commit:
-            commit_a = opts.commit + "~"
-            commit_b = opts.commit
-        elif opts.diff:
-            split = opts.diff.split("..")
+        if args.commit:
+            commit_a = args.commit + "~"
+            commit_b = args.commit
+        elif args.diff:
+            split = args.diff.split("..")
             commit_a = split[0]
             commit_b = split[1]
             undefined_a = {}
             undefined_b = {}
 
         # get undefined items before the commit
-        execute("git reset --hard %s" % commit_a)
-        undefined_a, _ = check_symbols(opts.ignore)
+        reset(commit_a)
+        undefined_a, _ = check_symbols(args.ignore)
 
         # get undefined items for the commit
-        execute("git reset --hard %s" % commit_b)
-        undefined_b, defined = check_symbols(opts.ignore)
+        reset(commit_b)
+        undefined_b, defined = check_symbols(args.ignore)
 
         # report cases that are present for the commit but not before
-        for feature in sorted(undefined_b):
-            # feature has not been undefined before
-            if not feature in undefined_a:
-                files = sorted(undefined_b.get(feature))
-                undefined[feature] = files
-            # check if there are new files that reference the undefined feature
+        for symbol in sorted(undefined_b):
+            # symbol has not been undefined before
+            if symbol not in undefined_a:
+                files = sorted(undefined_b.get(symbol))
+                undefined[symbol] = files
+            # check if there are new files that reference the undefined symbol
             else:
-                files = sorted(undefined_b.get(feature) -
-                               undefined_a.get(feature))
+                files = sorted(undefined_b.get(symbol) -
+                               undefined_a.get(symbol))
                 if files:
-                    undefined[feature] = files
+                    undefined[symbol] = files
 
         # reset to head
-        execute("git reset --hard %s" % head)
+        reset(head)
 
     # default to check the entire tree
     else:
-        undefined, defined = check_symbols(opts.ignore)
+        undefined, defined = check_symbols(args.ignore)
 
     # now print the output
-    for feature in sorted(undefined):
-        print red(feature)
+    for symbol in sorted(undefined):
+        print(red(symbol))
 
-        files = sorted(undefined.get(feature))
-        print "%s: %s" % (yel("Referencing files"), ", ".join(files))
+        files = sorted(undefined.get(symbol))
+        print("%s: %s" % (yel("Referencing files"), ", ".join(files)))
 
-        sims = find_sims(feature, opts.ignore, defined)
+        sims = find_sims(symbol, args.ignore, defined)
         sims_out = yel("Similar symbols")
         if sims:
-            print "%s: %s" % (sims_out, ', '.join(sims))
+            print("%s: %s" % (sims_out, ', '.join(sims)))
         else:
-            print "%s: %s" % (sims_out, "no similar symbols found")
+            print("%s: %s" % (sims_out, "no similar symbols found"))
 
-        if opts.find:
-            print "%s:" % yel("Commits changing symbol")
-            commits = find_commits(feature, opts.diff)
+        if args.find:
+            print("%s:" % yel("Commits changing symbol"))
+            commits = find_commits(symbol, args.diff)
             if commits:
                 for commit in commits:
                     commit = commit.split(" ", 1)
-                    print "\t- %s (\"%s\")" % (yel(commit[0]), commit[1])
+                    print("\t- %s (\"%s\")" % (yel(commit[0]), commit[1]))
             else:
-                print "\t- no commit found"
-        print  #  new line
+                print("\t- no commit found")
+        print()  # new line
+
+
+def reset(commit):
+    """Reset current git tree to %commit."""
+    execute(["git", "reset", "--hard", commit])
 
 
 def yel(string):
     """
     Color %string yellow.
     """
-    return "\033[33m%s\033[0m" % string
+    return "\033[33m%s\033[0m" % string if COLOR else string
 
 
 def red(string):
     """
     Color %string red.
     """
-    return "\033[31m%s\033[0m" % string
+    return "\033[31m%s\033[0m" % string if COLOR else string
 
 
 def execute(cmd):
     """Execute %cmd and return stdout.  Exit in case of error."""
-    pop = Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True)
-    (stdout, _) = pop.communicate()  # wait until finished
-    if pop.returncode != 0:
-        sys.exit(stdout)
+    try:
+        stdout = subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=False)
+        stdout = stdout.decode(errors='replace')
+    except subprocess.CalledProcessError as fail:
+        exit(fail)
     return stdout
 
 
 def find_commits(symbol, diff):
     """Find commits changing %symbol in the given range of %diff."""
-    commits = execute("git log --pretty=oneline --abbrev-commit -G %s %s"
-                      % (symbol, diff))
+    commits = execute(["git", "log", "--pretty=oneline",
+                       "--abbrev-commit", "-G",
+                       symbol, diff])
     return [x for x in commits.split("\n") if x]
 
 
 def tree_is_dirty():
     """Return true if the current working tree is dirty (i.e., if any file has
     been added, deleted, modified, renamed or copied but not committed)."""
-    stdout = execute("git status --porcelain")
+    stdout = execute(["git", "status", "--porcelain"])
     for line in stdout:
         if re.findall(r"[URMADC]{1}", line[:2]):
             return True
@@ -240,13 +251,13 @@ def tree_is_dirty():
 
 def get_head():
     """Return commit hash of current HEAD."""
-    stdout = execute("git rev-parse HEAD")
+    stdout = execute(["git", "rev-parse", "HEAD"])
     return stdout.strip('\n')
 
 
 def partition(lst, size):
     """Partition list @lst into eveni-sized lists of size @size."""
-    return [lst[i::size] for i in xrange(size)]
+    return [lst[i::size] for i in range(size)]
 
 
 def init_worker():
@@ -254,7 +265,7 @@ def init_worker():
     signal.signal(signal.SIGINT, signal.SIG_IGN)
 
 
-def find_sims(symbol, ignore, defined = []):
+def find_sims(symbol, ignore, defined=[]):
     """Return a list of max. ten Kconfig symbols that are string-similar to
     @symbol."""
     if defined:
@@ -279,7 +290,7 @@ def find_sims(symbol, ignore, defined = []):
 def get_files():
     """Return a list of all files in the current git directory."""
     # use 'git ls-files' to get the worklist
-    stdout = execute("git ls-files")
+    stdout = execute(["git", "ls-files"])
     if len(stdout) > 0 and stdout[-1] == "\n":
         stdout = stdout[:-1]
 
@@ -311,8 +322,8 @@ def check_symbols_helper(pool, ignore):
     check_symbols() in order to properly terminate running worker processes."""
     source_files = []
     kconfig_files = []
-    defined_features = []
-    referenced_features = dict()  # {file: [features]}
+    defined_symbols = []
+    referenced_symbols = dict()  # {file: [symbols]}
 
     for gitfile in get_files():
         if REGEX_FILE_KCONFIG.match(gitfile):
@@ -326,76 +337,75 @@ def check_symbols_helper(pool, ignore):
     # parse source files
     arglist = partition(source_files, cpu_count())
     for res in pool.map(parse_source_files, arglist):
-        referenced_features.update(res)
-
+        referenced_symbols.update(res)
 
     # parse kconfig files
     arglist = []
     for part in partition(kconfig_files, cpu_count()):
         arglist.append((part, ignore))
     for res in pool.map(parse_kconfig_files, arglist):
-        defined_features.extend(res[0])
-        referenced_features.update(res[1])
-    defined_features = set(defined_features)
+        defined_symbols.extend(res[0])
+        referenced_symbols.update(res[1])
+    defined_symbols = set(defined_symbols)
 
-    # inverse mapping of referenced_features to dict(feature: [files])
+    # inverse mapping of referenced_symbols to dict(symbol: [files])
     inv_map = dict()
-    for _file, features in referenced_features.iteritems():
-        for feature in features:
-            inv_map[feature] = inv_map.get(feature, set())
-            inv_map[feature].add(_file)
-    referenced_features = inv_map
-
-    undefined = {}  # {feature: [files]}
-    for feature in sorted(referenced_features):
+    for _file, symbols in referenced_symbols.items():
+        for symbol in symbols:
+            inv_map[symbol] = inv_map.get(symbol, set())
+            inv_map[symbol].add(_file)
+    referenced_symbols = inv_map
+
+    undefined = {}  # {symbol: [files]}
+    for symbol in sorted(referenced_symbols):
         # filter some false positives
-        if feature == "FOO" or feature == "BAR" or \
-                feature == "FOO_BAR" or feature == "XXX":
+        if symbol == "FOO" or symbol == "BAR" or \
+                symbol == "FOO_BAR" or symbol == "XXX":
             continue
-        if feature not in defined_features:
-            if feature.endswith("_MODULE"):
+        if symbol not in defined_symbols:
+            if symbol.endswith("_MODULE"):
                 # avoid false positives for kernel modules
-                if feature[:-len("_MODULE")] in defined_features:
+                if symbol[:-len("_MODULE")] in defined_symbols:
                     continue
-            undefined[feature] = referenced_features.get(feature)
-    return undefined, defined_features
+            undefined[symbol] = referenced_symbols.get(symbol)
+    return undefined, defined_symbols
 
 
 def parse_source_files(source_files):
     """Parse each source file in @source_files and return dictionary with source
     files as keys and lists of references Kconfig symbols as values."""
-    referenced_features = dict()
+    referenced_symbols = dict()
     for sfile in source_files:
-        referenced_features[sfile] = parse_source_file(sfile)
-    return referenced_features
+        referenced_symbols[sfile] = parse_source_file(sfile)
+    return referenced_symbols
 
 
 def parse_source_file(sfile):
-    """Parse @sfile and return a list of referenced Kconfig features."""
+    """Parse @sfile and return a list of referenced Kconfig symbols."""
     lines = []
     references = []
 
     if not os.path.exists(sfile):
         return references
 
-    with open(sfile, "r") as stream:
+    with open(sfile, "r", encoding='utf-8', errors='replace') as stream:
         lines = stream.readlines()
 
     for line in lines:
-        if not "CONFIG_" in line:
+        if "CONFIG_" not in line:
             continue
-        features = REGEX_SOURCE_FEATURE.findall(line)
-        for feature in features:
-            if not REGEX_FILTER_FEATURES.search(feature):
+        symbols = REGEX_SOURCE_SYMBOL.findall(line)
+        for symbol in symbols:
+            if not REGEX_FILTER_SYMBOLS.search(symbol):
                 continue
-            references.append(feature)
+            references.append(symbol)
 
     return references
 
 
-def get_features_in_line(line):
-    """Return mentioned Kconfig features in @line."""
-    return REGEX_FEATURE.findall(line)
+def get_symbols_in_line(line):
+    """Return mentioned Kconfig symbols in @line."""
+    return REGEX_SYMBOL.findall(line)
 
 
 def parse_kconfig_files(args):
@@ -404,21 +414,21 @@ def parse_kconfig_files(args):
     pattern."""
     kconfig_files = args[0]
     ignore = args[1]
-    defined_features = []
-    referenced_features = dict()
+    defined_symbols = []
+    referenced_symbols = dict()
 
     for kfile in kconfig_files:
         defined, references = parse_kconfig_file(kfile)
-        defined_features.extend(defined)
+        defined_symbols.extend(defined)
         if ignore and re.match(ignore, kfile):
             # do not collect references for files that match the ignore pattern
             continue
-        referenced_features[kfile] = references
-    return (defined_features, referenced_features)
+        referenced_symbols[kfile] = references
+    return (defined_symbols, referenced_symbols)
 
 
 def parse_kconfig_file(kfile):
-    """Parse @kfile and update feature definitions and references."""
+    """Parse @kfile and update symbol definitions and references."""
     lines = []
     defined = []
     references = []
@@ -427,7 +437,7 @@ def parse_kconfig_file(kfile):
     if not os.path.exists(kfile):
         return defined, references
 
-    with open(kfile, "r") as stream:
+    with open(kfile, "r", encoding='utf-8', errors='replace') as stream:
         lines = stream.readlines()
 
     for i in range(len(lines)):
@@ -436,8 +446,8 @@ def parse_kconfig_file(kfile):
         line = line.split("#")[0]  # ignore comments
 
         if REGEX_KCONFIG_DEF.match(line):
-            feature_def = REGEX_KCONFIG_DEF.findall(line)
-            defined.append(feature_def[0])
+            symbol_def = REGEX_KCONFIG_DEF.findall(line)
+            defined.append(symbol_def[0])
             skip = False
         elif REGEX_KCONFIG_HELP.match(line):
             skip = True
@@ -446,18 +456,18 @@ def parse_kconfig_file(kfile):
             pass
         elif REGEX_KCONFIG_STMT.match(line):
             line = REGEX_QUOTES.sub("", line)
-            features = get_features_in_line(line)
+            symbols = get_symbols_in_line(line)
             # multi-line statements
             while line.endswith("\\"):
                 i += 1
                 line = lines[i]
                 line = line.strip('\n')
-                features.extend(get_features_in_line(line))
-            for feature in set(features):
-                if REGEX_NUMERIC.match(feature):
+                symbols.extend(get_symbols_in_line(line))
+            for symbol in set(symbols):
+                if REGEX_NUMERIC.match(symbol):
                     # ignore numeric values
                     continue
-                references.append(feature)
+                references.append(symbol)
 
     return defined, references
 
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4de3cc42fc50..a8368d1c4348 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -54,6 +54,7 @@ my $min_conf_desc_length = 4;
 my $spelling_file = "$D/spelling.txt";
 my $codespell = 0;
 my $codespellfile = "/usr/share/codespell/dictionary.txt";
+my $conststructsfile = "$D/const_structs.checkpatch";
 my $color = 1;
 my $allow_c99_comments = 1;
 
@@ -523,7 +524,11 @@ our @mode_permission_funcs = (
 	["module_param_array_named", 5],
 	["debugfs_create_(?:file|u8|u16|u32|u64|x8|x16|x32|x64|size_t|atomic_t|bool|blob|regset32|u32_array)", 2],
 	["proc_create(?:_data|)", 2],
-	["(?:CLASS|DEVICE|SENSOR)_ATTR", 2],
+	["(?:CLASS|DEVICE|SENSOR|SENSOR_DEVICE|IIO_DEVICE)_ATTR", 2],
+	["IIO_DEV_ATTR_[A-Z_]+", 1],
+	["SENSOR_(?:DEVICE_|)ATTR_2", 2],
+	["SENSOR_TEMPLATE(?:_2|)", 3],
+	["__ATTR", 2],
 );
 
 #Create a search pattern for all these functions to speed up a loop below
@@ -541,6 +546,32 @@ our $mode_perms_world_writable = qr{
 	0[0-7][0-7][2367]
 }x;
 
+our %mode_permission_string_types = (
+	"S_IRWXU" => 0700,
+	"S_IRUSR" => 0400,
+	"S_IWUSR" => 0200,
+	"S_IXUSR" => 0100,
+	"S_IRWXG" => 0070,
+	"S_IRGRP" => 0040,
+	"S_IWGRP" => 0020,
+	"S_IXGRP" => 0010,
+	"S_IRWXO" => 0007,
+	"S_IROTH" => 0004,
+	"S_IWOTH" => 0002,
+	"S_IXOTH" => 0001,
+	"S_IRWXUGO" => 0777,
+	"S_IRUGO" => 0444,
+	"S_IWUGO" => 0222,
+	"S_IXUGO" => 0111,
+);
+
+#Create a search pattern for all these strings to speed up a loop below
+our $mode_perms_string_search = "";
+foreach my $entry (keys %mode_permission_string_types) {
+	$mode_perms_string_search .= '|' if ($mode_perms_string_search ne "");
+	$mode_perms_string_search .= $entry;
+}
+
 our $allowed_asm_includes = qr{(?x:
 	irq|
 	memory|
@@ -598,6 +629,29 @@ if ($codespell) {
 
 $misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;
 
+my $const_structs = "";
+if (open(my $conststructs, '<', $conststructsfile)) {
+	while (<$conststructs>) {
+		my $line = $_;
+
+		$line =~ s/\s*\n?$//g;
+		$line =~ s/^\s*//g;
+
+		next if ($line =~ m/^\s*#/);
+		next if ($line =~ m/^\s*$/);
+		if ($line =~ /\s/) {
+			print("$conststructsfile: '$line' invalid - ignored\n");
+			next;
+		}
+
+		$const_structs .= '|' if ($const_structs ne "");
+		$const_structs .= $line;
+	}
+	close($conststructsfile);
+} else {
+	warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
+}
+
 sub build_types {
 	my $mods = "(?x:  \n" . join("|\n  ", (@modifierList, @modifierListFile)) . "\n)";
 	my $all = "(?x:  \n" . join("|\n  ", (@typeList, @typeListFile)) . "\n)";
@@ -704,6 +758,16 @@ sub seed_camelcase_file {
 	}
 }
 
+sub is_maintained_obsolete {
+	my ($filename) = @_;
+
+	return 0 if (!(-e "$root/scripts/get_maintainer.pl"));
+
+	my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
+
+	return $status =~ /obsolete/i;
+}
+
 my $camelcase_seeded = 0;
 sub seed_camelcase_includes {
 	return if ($camelcase_seeded);
@@ -2289,6 +2353,10 @@ sub process {
 		}
 
 		if ($found_file) {
+			if (is_maintained_obsolete($realfile)) {
+				WARN("OBSOLETE",
+				     "$realfile is marked as 'obsolete' in the MAINTAINERS hierarchy.  No unnecessary modifications please.\n");
+			}
 			if ($realfile =~ m@^(?:drivers/net/|net/|drivers/staging/)@) {
 				$check = 1;
 			} else {
@@ -2939,6 +3007,30 @@ sub process {
 			     "Block comments use a trailing */ on a separate line\n" . $herecurr);
 		}
 
+# Block comment * alignment
+		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
+		    $line =~ /^\+[ \t]*$;/ &&			#leading comment
+		    $rawline =~ /^\+[ \t]*\*/ &&		#leading *
+		    (($prevrawline =~ /^\+.*?\/\*/ &&		#leading /*
+		      $prevrawline !~ /\*\/[ \t]*$/) ||		#no trailing */
+		     $prevrawline =~ /^\+[ \t]*\*/)) {		#leading *
+			my $oldindent;
+			$prevrawline =~ m@^\+([ \t]*/?)\*@;
+			if (defined($1)) {
+				$oldindent = expand_tabs($1);
+			} else {
+				$prevrawline =~ m@^\+(.*/?)\*@;
+				$oldindent = expand_tabs($1);
+			}
+			$rawline =~ m@^\+([ \t]*)\*@;
+			my $newindent = $1;
+			$newindent = expand_tabs($newindent);
+			if (length($oldindent) ne length($newindent)) {
+				WARN("BLOCK_COMMENT_STYLE",
+				     "Block comments should align the * on each line\n" . $hereprev);
+			}
+		}
+
 # check for missing blank lines after struct/union declarations
 # with exceptions for various attributes and macros
 		if ($prevline =~ /^[\+ ]};?\s*$/ &&
@@ -3570,15 +3662,6 @@ sub process {
 			}
 		}
 
-# check for uses of DEFINE_PCI_DEVICE_TABLE
-		if ($line =~ /\bDEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=/) {
-			if (WARN("DEFINE_PCI_DEVICE_TABLE",
-				 "Prefer struct pci_device_id over deprecated DEFINE_PCI_DEVICE_TABLE\n" . $herecurr) &&
-			    $fix) {
-				$fixed[$fixlinenr] =~ s/\b(?:static\s+|)DEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=\s*/static const struct pci_device_id $1\[\] = /;
-			}
-		}
-
 # check for new typedefs, only function parameters and sparse annotations
 # make sense.
 		if ($line =~ /\btypedef\s/ &&
@@ -4674,7 +4757,17 @@ sub process {
 			$has_flow_statement = 1 if ($ctx =~ /\b(goto|return)\b/);
 			$has_arg_concat = 1 if ($ctx =~ /\#\#/ && $ctx !~ /\#\#\s*(?:__VA_ARGS__|args)\b/);
 
-			$dstat =~ s/^.\s*\#\s*define\s+$Ident(?:\([^\)]*\))?\s*//;
+			$dstat =~ s/^.\s*\#\s*define\s+$Ident(\([^\)]*\))?\s*//;
+			my $define_args = $1;
+			my $define_stmt = $dstat;
+			my @def_args = ();
+
+			if (defined $define_args && $define_args ne "") {
+				$define_args = substr($define_args, 1, length($define_args) - 2);
+				$define_args =~ s/\s*//g;
+				@def_args = split(",", $define_args);
+			}
+
 			$dstat =~ s/$;//g;
 			$dstat =~ s/\\\n.//g;
 			$dstat =~ s/^\s*//s;
@@ -4710,6 +4803,15 @@ sub process {
 				^\[
 			}x;
 			#print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
+
+			$ctx =~ s/\n*$//;
+			my $herectx = $here . "\n";
+			my $stmt_cnt = statement_rawlines($ctx);
+
+			for (my $n = 0; $n < $stmt_cnt; $n++) {
+				$herectx .= raw_line($linenr, $n) . "\n";
+			}
+
 			if ($dstat ne '' &&
 			    $dstat !~ /^(?:$Ident|-?$Constant),$/ &&			# 10, // foo(),
 			    $dstat !~ /^(?:$Ident|-?$Constant);$/ &&			# foo();
@@ -4725,13 +4827,6 @@ sub process {
 			    $dstat !~ /^\(\{/ &&						# ({...
 			    $ctx !~ /^.\s*#\s*define\s+TRACE_(?:SYSTEM|INCLUDE_FILE|INCLUDE_PATH)\b/)
 			{
-				$ctx =~ s/\n*$//;
-				my $herectx = $here . "\n";
-				my $cnt = statement_rawlines($ctx);
-
-				for (my $n = 0; $n < $cnt; $n++) {
-					$herectx .= raw_line($linenr, $n) . "\n";
-				}
 
 				if ($dstat =~ /;/) {
 					ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
@@ -4740,6 +4835,46 @@ sub process {
 					ERROR("COMPLEX_MACRO",
 					      "Macros with complex values should be enclosed in parentheses\n" . "$herectx");
 				}
+
+			}
+
+			# Make $define_stmt single line, comment-free, etc
+			my @stmt_array = split('\n', $define_stmt);
+			my $first = 1;
+			$define_stmt = "";
+			foreach my $l (@stmt_array) {
+				$l =~ s/\\$//;
+				if ($first) {
+					$define_stmt = $l;
+					$first = 0;
+				} elsif ($l =~ /^[\+ ]/) {
+					$define_stmt .= substr($l, 1);
+				}
+			}
+			$define_stmt =~ s/$;//g;
+			$define_stmt =~ s/\s+/ /g;
+			$define_stmt = trim($define_stmt);
+
+# check if any macro arguments are reused (ignore '...' and 'type')
+			foreach my $arg (@def_args) {
+			        next if ($arg =~ /\.\.\./);
+			        next if ($arg =~ /^type$/i);
+				my $tmp = $define_stmt;
+				$tmp =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
+				$tmp =~ s/\#+\s*$arg\b//g;
+				$tmp =~ s/\b$arg\s*\#\#//g;
+				my $use_cnt = $tmp =~ s/\b$arg\b//g;
+				if ($use_cnt > 1) {
+					CHK("MACRO_ARG_REUSE",
+					    "Macro argument reuse '$arg' - possible side-effects?\n" . "$herectx");
+				    }
+# check if any macro arguments may have other precedence issues
+				if ($define_stmt =~ m/($Operators)?\s*\b$arg\b\s*($Operators)?/m &&
+				    ((defined($1) && $1 ne ',') ||
+				     (defined($2) && $2 ne ','))) {
+					CHK("MACRO_ARG_PRECEDENCE",
+					    "Macro argument '$arg' may be better as '($arg)' to avoid precedence issues\n" . "$herectx");
+				}
 			}
 
 # check for macros with flow control, but without ## concatenation
@@ -5504,46 +5639,46 @@ sub process {
 		}
 
 # Check for memcpy(foo, bar, ETH_ALEN) that could be ether_addr_copy(foo, bar)
-		if ($^V && $^V ge 5.10.0 &&
-		    defined $stat &&
-		    $stat =~ /^\+(?:.*?)\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
-			if (WARN("PREFER_ETHER_ADDR_COPY",
-				 "Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)\n" . "$here\n$stat\n") &&
-			    $fix) {
-				$fixed[$fixlinenr] =~ s/\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/ether_addr_copy($2, $7)/;
-			}
-		}
+#		if ($^V && $^V ge 5.10.0 &&
+#		    defined $stat &&
+#		    $stat =~ /^\+(?:.*?)\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
+#			if (WARN("PREFER_ETHER_ADDR_COPY",
+#				 "Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)\n" . "$here\n$stat\n") &&
+#			    $fix) {
+#				$fixed[$fixlinenr] =~ s/\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/ether_addr_copy($2, $7)/;
+#			}
+#		}
 
 # Check for memcmp(foo, bar, ETH_ALEN) that could be ether_addr_equal*(foo, bar)
-		if ($^V && $^V ge 5.10.0 &&
-		    defined $stat &&
-		    $stat =~ /^\+(?:.*?)\bmemcmp\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
-			WARN("PREFER_ETHER_ADDR_EQUAL",
-			     "Prefer ether_addr_equal() or ether_addr_equal_unaligned() over memcmp()\n" . "$here\n$stat\n")
-		}
+#		if ($^V && $^V ge 5.10.0 &&
+#		    defined $stat &&
+#		    $stat =~ /^\+(?:.*?)\bmemcmp\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
+#			WARN("PREFER_ETHER_ADDR_EQUAL",
+#			     "Prefer ether_addr_equal() or ether_addr_equal_unaligned() over memcmp()\n" . "$here\n$stat\n")
+#		}
 
 # check for memset(foo, 0x0, ETH_ALEN) that could be eth_zero_addr
 # check for memset(foo, 0xFF, ETH_ALEN) that could be eth_broadcast_addr
-		if ($^V && $^V ge 5.10.0 &&
-		    defined $stat &&
-		    $stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
-
-			my $ms_val = $7;
-
-			if ($ms_val =~ /^(?:0x|)0+$/i) {
-				if (WARN("PREFER_ETH_ZERO_ADDR",
-					 "Prefer eth_zero_addr over memset()\n" . "$here\n$stat\n") &&
-				    $fix) {
-					$fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_zero_addr($2)/;
-				}
-			} elsif ($ms_val =~ /^(?:0xff|255)$/i) {
-				if (WARN("PREFER_ETH_BROADCAST_ADDR",
-					 "Prefer eth_broadcast_addr() over memset()\n" . "$here\n$stat\n") &&
-				    $fix) {
-					$fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_broadcast_addr($2)/;
-				}
-			}
-		}
+#		if ($^V && $^V ge 5.10.0 &&
+#		    defined $stat &&
+#		    $stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
+#
+#			my $ms_val = $7;
+#
+#			if ($ms_val =~ /^(?:0x|)0+$/i) {
+#				if (WARN("PREFER_ETH_ZERO_ADDR",
+#					 "Prefer eth_zero_addr over memset()\n" . "$here\n$stat\n") &&
+#				    $fix) {
+#					$fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_zero_addr($2)/;
+#				}
+#			} elsif ($ms_val =~ /^(?:0xff|255)$/i) {
+#				if (WARN("PREFER_ETH_BROADCAST_ADDR",
+#					 "Prefer eth_broadcast_addr() over memset()\n" . "$here\n$stat\n") &&
+#				    $fix) {
+#					$fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_broadcast_addr($2)/;
+#				}
+#			}
+#		}
 
 # typecasts on min/max could be min_t/max_t
 		if ($^V && $^V ge 5.10.0 &&
@@ -5663,6 +5798,19 @@ sub process {
 			     "externs should be avoided in .c files\n" .  $herecurr);
 		}
 
+		if ($realfile =~ /\.[ch]$/ && defined $stat &&
+		    $stat =~ /^.\s*(?:extern\s+)?$Type\s*$Ident\s*\(\s*([^{]+)\s*\)\s*;/s &&
+		    $1 ne "void") {
+			my $args = trim($1);
+			while ($args =~ m/\s*($Type\s*(?:$Ident|\(\s*\*\s*$Ident?\s*\)\s*$balanced_parens)?)/g) {
+				my $arg = trim($1);
+				if ($arg =~ /^$Type$/ && $arg !~ /enum\s+$Ident$/) {
+					WARN("FUNCTION_ARGUMENTS",
+					     "function definition argument '$arg' should also have an identifier name\n" . $herecurr);
+				}
+			}
+		}
+
 # checks for new __setup's
 		if ($rawline =~ /\b__setup\("([^"]*)"/) {
 			my $name = $1;
@@ -5862,46 +6010,6 @@ sub process {
 		}
 
 # check for various structs that are normally const (ops, kgdb, device_tree)
-		my $const_structs = qr{
-				acpi_dock_ops|
-				address_space_operations|
-				backlight_ops|
-				block_device_operations|
-				dentry_operations|
-				dev_pm_ops|
-				dma_map_ops|
-				extent_io_ops|
-				file_lock_operations|
-				file_operations|
-				hv_ops|
-				ide_dma_ops|
-				intel_dvo_dev_ops|
-				item_operations|
-				iwl_ops|
-				kgdb_arch|
-				kgdb_io|
-				kset_uevent_ops|
-				lock_manager_operations|
-				microcode_ops|
-				mtrr_ops|
-				neigh_ops|
-				nlmsvc_binding|
-				of_device_id|
-				pci_raw_ops|
-				pipe_buf_operations|
-				platform_hibernation_ops|
-				platform_suspend_ops|
-				proto_ops|
-				rpc_pipe_ops|
-				seq_operations|
-				snd_ac97_build_ops|
-				soc_pcmcia_socket_ops|
-				stacktrace_ops|
-				sysfs_ops|
-				tty_operations|
-				uart_ops|
-				usb_mon_operations|
-				wd_ops}x;
 		if ($line !~ /\bconst\b/ &&
 		    $line =~ /\bstruct\s+($const_structs)\b/) {
 			WARN("CONST_STRUCT",
@@ -5988,34 +6096,69 @@ sub process {
 # Mode permission misuses where it seems decimal should be octal
 # This uses a shortcut match to avoid unnecessary uses of a slow foreach loop
 		if ($^V && $^V ge 5.10.0 &&
+		    defined $stat &&
 		    $line =~ /$mode_perms_search/) {
 			foreach my $entry (@mode_permission_funcs) {
 				my $func = $entry->[0];
 				my $arg_pos = $entry->[1];
 
+				my $lc = $stat =~ tr@\n@@;
+				$lc = $lc + $linenr;
+				my $stat_real = raw_line($linenr, 0);
+				for (my $count = $linenr + 1; $count <= $lc; $count++) {
+					$stat_real = $stat_real . "\n" . raw_line($count, 0);
+				}
+
 				my $skip_args = "";
 				if ($arg_pos > 1) {
 					$arg_pos--;
 					$skip_args = "(?:\\s*$FuncArg\\s*,\\s*){$arg_pos,$arg_pos}";
 				}
-				my $test = "\\b$func\\s*\\(${skip_args}([\\d]+)\\s*[,\\)]";
-				if ($line =~ /$test/) {
+				my $test = "\\b$func\\s*\\(${skip_args}($FuncArg(?:\\|\\s*$FuncArg)*)\\s*[,\\)]";
+				if ($stat =~ /$test/) {
 					my $val = $1;
 					$val = $6 if ($skip_args ne "");
-
-					if ($val !~ /^0$/ &&
-					    (($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
-					     length($val) ne 4)) {
+					if (($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
+					    ($val =~ /^$Octal$/ && length($val) ne 4)) {
 						ERROR("NON_OCTAL_PERMISSIONS",
-						      "Use 4 digit octal (0777) not decimal permissions\n" . $herecurr);
-					} elsif ($val =~ /^$Octal$/ && (oct($val) & 02)) {
+						      "Use 4 digit octal (0777) not decimal permissions\n" . "$here\n" . $stat_real);
+					}
+					if ($val =~ /^$Octal$/ && (oct($val) & 02)) {
 						ERROR("EXPORTED_WORLD_WRITABLE",
-						      "Exporting writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
+						      "Exporting writable files is usually an error. Consider more restrictive permissions.\n" . "$here\n" . $stat_real);
 					}
 				}
 			}
 		}
 
+# check for uses of S_<PERMS> that could be octal for readability
+		if ($line =~ /\b$mode_perms_string_search\b/) {
+			my $val = "";
+			my $oval = "";
+			my $to = 0;
+			my $curpos = 0;
+			my $lastpos = 0;
+			while ($line =~ /\b(($mode_perms_string_search)\b(?:\s*\|\s*)?\s*)/g) {
+				$curpos = pos($line);
+				my $match = $2;
+				my $omatch = $1;
+				last if ($lastpos > 0 && ($curpos - length($omatch) != $lastpos));
+				$lastpos = $curpos;
+				$to |= $mode_permission_string_types{$match};
+				$val .= '\s*\|\s*' if ($val ne "");
+				$val .= $match;
+				$oval .= $omatch;
+			}
+			$oval =~ s/^\s*\|\s*//;
+			$oval =~ s/\s*\|\s*$//;
+			my $octal = sprintf("%04o", $to);
+			if (WARN("SYMBOLIC_PERMS",
+				 "Symbolic permissions '$oval' are not preferred. Consider using octal permissions '$octal'.\n" . $herecurr) &&
+			    $fix) {
+				$fixed[$fixlinenr] =~ s/$val/$octal/;
+			}
+		}
+
 # validate content of MODULE_LICENSE against list from include/linux/module.h
 		if ($line =~ /\bMODULE_LICENSE\s*\(\s*($String)\s*\)/) {
 			my $extracted_string = get_quoted_string($line, $rawline);
diff --git a/scripts/const_structs.checkpatch b/scripts/const_structs.checkpatch
new file mode 100644
index 000000000000..ac5f1267151d
--- /dev/null
+++ b/scripts/const_structs.checkpatch
@@ -0,0 +1,64 @@
+acpi_dock_ops
+address_space_operations
+backlight_ops
+block_device_operations
+clk_ops
+comedi_lrange
+component_ops
+dentry_operations
+dev_pm_ops
+dma_map_ops
+driver_info
+drm_connector_funcs
+drm_encoder_funcs
+drm_encoder_helper_funcs
+ethtool_ops
+extent_io_ops
+file_lock_operations
+file_operations
+hv_ops
+ide_dma_ops
+ide_port_ops
+inode_operations
+intel_dvo_dev_ops
+irq_domain_ops
+item_operations
+iwl_cfg
+iwl_ops
+kgdb_arch
+kgdb_io
+kset_uevent_ops
+lock_manager_operations
+machine_desc
+microcode_ops
+mlxsw_reg_info
+mtrr_ops
+neigh_ops
+net_device_ops
+nlmsvc_binding
+nvkm_device_chip
+of_device_id
+pci_raw_ops
+pipe_buf_operations
+platform_hibernation_ops
+platform_suspend_ops
+proto_ops
+regmap_access_table
+rpc_pipe_ops
+rtc_class_ops
+sd_desc
+seq_operations
+sirfsoc_padmux
+snd_ac97_build_ops
+snd_soc_component_driver
+soc_pcmcia_socket_ops
+stacktrace_ops
+sysfs_ops
+tty_operations
+uart_ops
+usb_mon_operations
+v4l2_ctrl_ops
+v4l2_ioctl_ops
+vm_operations_struct
+wacom_features
+wd_ops
diff --git a/scripts/faddr2line b/scripts/faddr2line
new file mode 100755
index 000000000000..450b33257339
--- /dev/null
+++ b/scripts/faddr2line
@@ -0,0 +1,177 @@
+#!/bin/bash
+#
+# Translate stack dump function offsets.
+#
+# addr2line doesn't work with KASLR addresses.  This works similarly to
+# addr2line, but instead takes the 'func+0x123' format as input:
+#
+#   $ ./scripts/faddr2line ~/k/vmlinux meminfo_proc_show+0x5/0x568
+#   meminfo_proc_show+0x5/0x568:
+#   meminfo_proc_show at fs/proc/meminfo.c:27
+#
+# If the address is part of an inlined function, the full inline call chain is
+# printed:
+#
+#   $ ./scripts/faddr2line ~/k/vmlinux native_write_msr+0x6/0x27
+#   native_write_msr+0x6/0x27:
+#   arch_static_branch at arch/x86/include/asm/msr.h:121
+#    (inlined by) static_key_false at include/linux/jump_label.h:125
+#    (inlined by) native_write_msr at arch/x86/include/asm/msr.h:125
+#
+# The function size after the '/' in the input is optional, but recommended.
+# It's used to help disambiguate any duplicate symbol names, which can occur
+# rarely.  If the size is omitted for a duplicate symbol then it's possible for
+# multiple code sites to be printed:
+#
+#   $ ./scripts/faddr2line ~/k/vmlinux raw_ioctl+0x5
+#   raw_ioctl+0x5/0x20:
+#   raw_ioctl at drivers/char/raw.c:122
+#
+#   raw_ioctl+0x5/0xb1:
+#   raw_ioctl at net/ipv4/raw.c:876
+#
+# Multiple addresses can be specified on a single command line:
+#
+#   $ ./scripts/faddr2line ~/k/vmlinux type_show+0x10/45 free_reserved_area+0x90
+#   type_show+0x10/0x2d:
+#   type_show at drivers/video/backlight/backlight.c:213
+#
+#   free_reserved_area+0x90/0x123:
+#   free_reserved_area at mm/page_alloc.c:6429 (discriminator 2)
+
+
+set -o errexit
+set -o nounset
+
+command -v awk >/dev/null 2>&1 || die "awk isn't installed"
+command -v readelf >/dev/null 2>&1 || die "readelf isn't installed"
+command -v addr2line >/dev/null 2>&1 || die "addr2line isn't installed"
+
+usage() {
+	echo "usage: faddr2line <object file> <func+offset> <func+offset>..." >&2
+	exit 1
+}
+
+warn() {
+	echo "$1" >&2
+}
+
+die() {
+	echo "ERROR: $1" >&2
+	exit 1
+}
+
+# Try to figure out the source directory prefix so we can remove it from the
+# addr2line output.  HACK ALERT: This assumes that start_kernel() is in
+# kernel/init.c!  This only works for vmlinux.  Otherwise it falls back to
+# printing the absolute path.
+find_dir_prefix() {
+	local objfile=$1
+
+	local start_kernel_addr=$(readelf -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}')
+	[[ -z $start_kernel_addr ]] && return
+
+	local file_line=$(addr2line -e $objfile $start_kernel_addr)
+	[[ -z $file_line ]] && return
+
+	local prefix=${file_line%init/main.c:*}
+	if [[ -z $prefix ]] || [[ $prefix = $file_line ]]; then
+		return
+	fi
+
+	DIR_PREFIX=$prefix
+	return 0
+}
+
+__faddr2line() {
+	local objfile=$1
+	local func_addr=$2
+	local dir_prefix=$3
+	local print_warnings=$4
+
+	local func=${func_addr%+*}
+	local offset=${func_addr#*+}
+	offset=${offset%/*}
+	local size=
+	[[ $func_addr =~ "/" ]] && size=${func_addr#*/}
+
+	if [[ -z $func ]] || [[ -z $offset ]] || [[ $func = $func_addr ]]; then
+		warn "bad func+offset $func_addr"
+		DONE=1
+		return
+	fi
+
+	# Go through each of the object's symbols which match the func name.
+	# In rare cases there might be duplicates.
+	while read symbol; do
+		local fields=($symbol)
+		local sym_base=0x${fields[1]}
+		local sym_size=${fields[2]}
+		local sym_type=${fields[3]}
+
+		# calculate the address
+		local addr=$(($sym_base + $offset))
+		if [[ -z $addr ]] || [[ $addr = 0 ]]; then
+			warn "bad address: $sym_base + $offset"
+			DONE=1
+			return
+		fi
+		local hexaddr=0x$(printf %x $addr)
+
+		# weed out non-function symbols
+		if [[ $sym_type != "FUNC" ]]; then
+			[[ $print_warnings = 1 ]] &&
+				echo "skipping $func address at $hexaddr due to non-function symbol"
+			continue
+		fi
+
+		# if the user provided a size, make sure it matches the symbol's size
+		if [[ -n $size ]] && [[ $size -ne $sym_size ]]; then
+			[[ $print_warnings = 1 ]] &&
+				echo "skipping $func address at $hexaddr due to size mismatch ($size != $sym_size)"
+			continue;
+		fi
+
+		# make sure the provided offset is within the symbol's range
+		if [[ $offset -gt $sym_size ]]; then
+			[[ $print_warnings = 1 ]] &&
+				echo "skipping $func address at $hexaddr due to size mismatch ($offset > $sym_size)"
+			continue
+		fi
+
+		# separate multiple entries with a blank line
+		[[ $FIRST = 0 ]] && echo
+		FIRST=0
+
+		local hexsize=0x$(printf %x $sym_size)
+		echo "$func+$offset/$hexsize:"
+		addr2line -fpie $objfile $hexaddr | sed "s; $dir_prefix\(\./\)*; ;"
+		DONE=1
+
+	done < <(readelf -sW $objfile | awk -v f=$func '$8 == f {print}')
+}
+
+[[ $# -lt 2 ]] && usage
+
+objfile=$1
+[[ ! -f $objfile ]] && die "can't find objfile $objfile"
+shift
+
+DIR_PREFIX=supercalifragilisticexpialidocious
+find_dir_prefix $objfile
+
+FIRST=1
+while [[ $# -gt 0 ]]; do
+	func_addr=$1
+	shift
+
+	# print any matches found
+	DONE=0
+	__faddr2line $objfile $func_addr $DIR_PREFIX 0
+
+	# if no match was found, print warnings
+	if [[ $DONE = 0 ]]; then
+		__faddr2line $objfile $func_addr $DIR_PREFIX 1
+		warn "no match for $func_addr"
+	fi
+done
diff --git a/scripts/gcc-plugin.sh b/scripts/gcc-plugin.sh
index fb9207565471..b65224bfb847 100755
--- a/scripts/gcc-plugin.sh
+++ b/scripts/gcc-plugin.sh
@@ -1,5 +1,12 @@
 #!/bin/sh
 srctree=$(dirname "$0")
+
+SHOW_ERROR=
+if [ "$1" = "--show-error" ] ; then
+	SHOW_ERROR=1
+	shift || true
+fi
+
 gccplugins_dir=$($3 -print-file-name=plugin)
 plugincc=$($1 -E -x c++ - -o /dev/null -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
 #include "gcc-common.h"
@@ -13,6 +20,9 @@ EOF
 
 if [ $? -ne 0 ]
 then
+	if [ -n "$SHOW_ERROR" ] ; then
+		echo "${plugincc}" >&2
+	fi
 	exit 1
 fi
 
@@ -48,4 +58,8 @@ then
 	echo "$2"
 	exit 0
 fi
+
+if [ -n "$SHOW_ERROR" ] ; then
+	echo "${plugincc}" >&2
+fi
 exit 1
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index 88c8ec47232b..8b29dc17c73c 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -12,16 +12,18 @@ else
   export HOST_EXTRACXXFLAGS
 endif
 
-export GCCPLUGINS_DIR HOSTLIBS
-
 ifneq ($(CFLAGS_KCOV), $(SANCOV_PLUGIN))
   GCC_PLUGIN := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGIN))
 endif
 
-$(HOSTLIBS)-y := $(GCC_PLUGIN)
+export HOSTLIBS
+
+$(HOSTLIBS)-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
 always := $($(HOSTLIBS)-y)
 
-cyc_complexity_plugin-objs := cyc_complexity_plugin.o
-sancov_plugin-objs := sancov_plugin.o
+$(foreach p,$($(HOSTLIBS)-y:%.so=%),$(eval $(p)-objs := $(p).o))
+
+subdir-y := $(GCC_PLUGIN_SUBDIR)
+subdir-  += $(GCC_PLUGIN_SUBDIR)
 
 clean-files += *.so
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 122fcdaf42c8..aed4511f0304 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -432,7 +432,7 @@ foreach my $file (@ARGV) {
 	    die "$P: file '${file}' not found\n";
 	}
     }
-    if ($from_filename || vcs_file_exists($file)) {
+    if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
 	$file =~ s/^\Q${cur_path}\E//;	#strip any absolute path
 	$file =~ s/^\Q${lk_path}\E//;	#or the path to the lk tree
 	push(@files, $file);
@@ -2136,9 +2136,11 @@ sub vcs_file_exists {
 
     my $cmd = $VCS_cmds{"file_exists_cmd"};
     $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
-
+    $cmd .= " 2>&1";
     $exists = &{$VCS_cmds{"execute_cmd"}}($cmd);
 
+    return 0 if ($? != 0);
+
     return $exists;
 }
 
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 4f2e9049e8fa..93721f3c91bf 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -212,6 +212,7 @@ my $anon_struct_union = 0;
 my $type_constant = '\%([-_\w]+)';
 my $type_func = '(\w+)\(\)';
 my $type_param = '\@(\w+)';
+my $type_fp_param = '\@(\w+)\(\)';  # Special RST handling for func ptr params
 my $type_struct = '\&((struct\s*)*[_\w]+)';
 my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
 my $type_env = '(\$\w+)';
@@ -292,6 +293,7 @@ my @highlights_rst = (
                        # Note: need to escape () to avoid func matching later
                        [$type_member_func, "\\:c\\:type\\:`\$1\$2\\\\(\\\\) <\$1>`"],
                        [$type_member, "\\:c\\:type\\:`\$1\$2 <\$1>`"],
+		       [$type_fp_param, "**\$1\\\\(\\\\)**"],
                        [$type_func, "\\:c\\:func\\:`\$1()`"],
                        [$type_struct_full, "\\:c\\:type\\:`\$1 \$2 <\$2>`"],
                        [$type_enum_full, "\\:c\\:type\\:`\$1 \$2 <\$2>`"],
@@ -412,7 +414,7 @@ my $doc_com_body = '\s*\* ?';
 my $doc_decl = $doc_com . '(\w+)';
 # @params and a strictly limited set of supported section names
 my $doc_sect = $doc_com . 
-    '\s*(\@\w+|description|context|returns?|notes?|examples?)\s*:(.*)';
+    '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
 my $doc_content = $doc_com_body . '(.*)';
 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
 my $doc_inline_start = '^\s*/\*\*\s*$';
@@ -1831,13 +1833,22 @@ sub output_function_rst(%) {
     my %args = %{$_[0]};
     my ($parameter, $section);
     my $oldprefix = $lineprefix;
-    my $start;
-
-    print ".. c:function:: ";
+    my $start = "";
+
+    if ($args{'typedef'}) {
+	print ".. c:type:: ". $args{'function'} . "\n\n";
+	print_lineno($declaration_start_line);
+	print "   **Typedef**: ";
+	$lineprefix = "";
+	output_highlight_rst($args{'purpose'});
+	$start = "\n\n**Syntax**\n\n  ``";
+    } else {
+	print ".. c:function:: ";
+    }
     if ($args{'functiontype'} ne "") {
-	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
+	$start .= $args{'functiontype'} . " " . $args{'function'} . " (";
     } else {
-	$start = $args{'function'} . " (";
+	$start .= $args{'function'} . " (";
     }
     print $start;
 
@@ -1849,9 +1860,6 @@ sub output_function_rst(%) {
 	$count++;
 	$type = $args{'parametertypes'}{$parameter};
 
-	# RST doesn't like address_space tags at function prototypes
-	$type =~ s/__(user|kernel|iomem|percpu|pmem|rcu)\s*//;
-
 	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 	    # pointer-to-function
 	    print $1 . $parameter . ") (" . $2;
@@ -1859,11 +1867,15 @@ sub output_function_rst(%) {
 	    print $type . " " . $parameter;
 	}
     }
-    print ")\n\n";
-    print_lineno($declaration_start_line);
-    $lineprefix = "   ";
-    output_highlight_rst($args{'purpose'});
-    print "\n";
+    if ($args{'typedef'}) {
+	print ");``\n\n";
+    } else {
+	print ")\n\n";
+	print_lineno($declaration_start_line);
+	$lineprefix = "   ";
+	output_highlight_rst($args{'purpose'});
+	print "\n";
+    }
 
     print "**Parameters**\n\n";
     $lineprefix = "  ";
@@ -2003,7 +2015,7 @@ sub output_struct_rst(%) {
 	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 	$type = $args{'parametertypes'}{$parameter};
         print_lineno($parameterdesc_start_lines{$parameter_name});
-	print "``$type $parameter``\n";
+	print "``" . $parameter . "``\n";
 	output_highlight_rst($args{'parameterdescs'}{$parameter_name});
 	print "\n";
     }
@@ -2193,7 +2205,9 @@ sub dump_typedef($$) {
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
 
     # Parse function prototypes
-    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/) {
+    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
+	$x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
+
 	# Function typedefs
 	$return_type = $1;
 	$declaration_name = $2;
@@ -2204,6 +2218,7 @@ sub dump_typedef($$) {
 	output_declaration($declaration_name,
 			   'function',
 			   {'function' => $declaration_name,
+			    'typedef' => 1,
 			    'module' => $modulename,
 			    'functiontype' => $return_type,
 			    'parameterlist' => \@parameterlist,
@@ -2338,6 +2353,7 @@ sub push_parameter($$$) {
 
 	if ($type eq "" && $param =~ /\.\.\.$/)
 	{
+	    $param = "...";
 	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
 		$parameterdescs{$param} = "variable arguments";
 	    }
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 48958d3cec9e..bd8349759095 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -888,7 +888,7 @@ static void check_section(const char *modname, struct elf_info *elf,
 
 #define DATA_SECTIONS ".data", ".data.rel"
 #define TEXT_SECTIONS ".text", ".text.unlikely", ".sched.text", \
-		".kprobes.text"
+		".kprobes.text", ".cpuidle.text"
 #define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
 		".fixup", ".entry.text", ".exception.text", ".text.*", \
 		".coldtext"
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index e1c09e2f9be7..8ea9fd2b6573 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -332,7 +332,9 @@ if grep -q '^CONFIG_STACK_VALIDATION=y' $KCONFIG_CONFIG ; then
 	(cd $objtree; find tools/objtool -type f -executable) >> "$objtree/debian/hdrobjfiles"
 fi
 (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
-(cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
+if grep -q '^CONFIG_GCC_PLUGINS=y' $KCONFIG_CONFIG ; then
+	(cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
+fi
 destdir=$kernel_headers_dir/usr/src/linux-headers-$version
 mkdir -p "$destdir"
 (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 42396a74405d..5423a58d1b06 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -363,7 +363,9 @@ is_mcounted_section_name(char const *const txtname)
 		strcmp(".sched.text",    txtname) == 0 ||
 		strcmp(".spinlock.text", txtname) == 0 ||
 		strcmp(".irqentry.text", txtname) == 0 ||
+		strcmp(".softirqentry.text", txtname) == 0 ||
 		strcmp(".kprobes.text", txtname) == 0 ||
+		strcmp(".cpuidle.text", txtname) == 0 ||
 		strcmp(".text.unlikely", txtname) == 0;
 }
 
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 96e2486a6fc4..faac4b10d8ea 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -134,7 +134,9 @@ my %text_sections = (
      ".sched.text" => 1,
      ".spinlock.text" => 1,
      ".irqentry.text" => 1,
+     ".softirqentry.text" => 1,
      ".kprobes.text" => 1,
+     ".cpuidle.text" => 1,
      ".text.unlikely" => 1,
 );
 
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index fa79c6d2a5b8..163c720d3f2b 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -629,7 +629,6 @@ mispelt||misspelt
 miximum||maximum
 mmnemonic||mnemonic
 mnay||many
-modeled||modelled
 modulues||modules
 monochorome||monochrome
 monochromo||monochrome
diff --git a/scripts/tags.sh b/scripts/tags.sh
index ed7eef24ef89..a2ff3388e5ea 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -206,7 +206,6 @@ regex_c=(
 	'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
 	'/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
 	'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
-	'/\<DEFINE_PCI_DEVICE_TABLE(\([[:alnum:]_]*\)/\1/v/'
 	'/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
 	'/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
 	'/\<DEFINE_HASHTABLE(\([[:alnum:]_]*\)/\1/v/'
@@ -264,7 +263,8 @@ exuberant()
 	-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL   \
 	-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
 	-I static,const						\
-	--extra=+f --c-kinds=+px --langmap=c:+.h "${regex[@]}"
+	--extra=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
+	"${regex[@]}"
 
 	setup_regex exuberant kconfig
 	all_kconfigs | xargs $1 -a                              \
diff --git a/scripts/tracing/ftrace-bisect.sh b/scripts/tracing/ftrace-bisect.sh
new file mode 100755
index 000000000000..9ff8ac5fc53c
--- /dev/null
+++ b/scripts/tracing/ftrace-bisect.sh
@@ -0,0 +1,115 @@
+#!/bin/bash
+#
+# Here's how to use this:
+#
+# This script is used to help find functions that are being traced by function
+# tracer or function graph tracing that causes the machine to reboot, hang, or
+# crash. Here's the steps to take.
+#
+# First, determine if function tracing is working with a single function:
+#
+#   (note, if this is a problem with function_graph tracing, then simply
+#    replace "function" with "function_graph" in the following steps).
+#
+#  # cd /sys/kernel/debug/tracing
+#  # echo schedule > set_ftrace_filter
+#  # echo function > current_tracer
+#
+# If this works, then we know that something is being traced that shouldn't be.
+#
+#  # echo nop > current_tracer
+#
+#  # cat available_filter_functions > ~/full-file
+#  # ftrace-bisect ~/full-file ~/test-file ~/non-test-file
+#  # cat ~/test-file > set_ftrace_filter
+#
+# *** Note *** this will take several minutes. Setting multiple functions is
+# an O(n^2) operation, and we are dealing with thousands of functions. So go
+# have  coffee, talk with your coworkers, read facebook. And eventually, this
+# operation will end.
+#
+#  # echo function > current_tracer
+#
+# If it crashes, we know that ~/test-file has a bad function.
+#
+#   Reboot back to test kernel.
+#
+#     # cd /sys/kernel/debug/tracing
+#     # mv ~/test-file ~/full-file
+#
+# If it didn't crash.
+#
+#     # echo nop > current_tracer
+#     # mv ~/non-test-file ~/full-file
+#
+# Get rid of the other test file from previous run (or save them off somewhere).
+#  # rm -f ~/test-file ~/non-test-file
+#
+# And start again:
+#
+#  # ftrace-bisect ~/full-file ~/test-file ~/non-test-file
+#
+# The good thing is, because this cuts the number of functions in ~/test-file
+# by half, the cat of it into set_ftrace_filter takes half as long each
+# iteration, so don't talk so much at the water cooler the second time.
+#
+# Eventually, if you did this correctly, you will get down to the problem
+# function, and all we need to do is to notrace it.
+#
+# The way to figure out if the problem function is bad, just do:
+#
+#  # echo <problem-function> > set_ftrace_notrace
+#  # echo > set_ftrace_filter
+#  # echo function > current_tracer
+#
+# And if it doesn't crash, we are done.
+#
+# If it does crash, do this again (there's more than one problem function)
+# but you need to echo the problem function(s) into set_ftrace_notrace before
+# enabling function tracing in the above steps. Or if you can compile the
+# kernel, annotate the problem functions with "notrace" and start again.
+#
+
+
+if [ $# -ne 3 ]; then
+  echo 'usage: ftrace-bisect full-file test-file  non-test-file'
+  exit
+fi
+
+full=$1
+test=$2
+nontest=$3
+
+x=`cat $full | wc -l`
+if [ $x -eq 1 ]; then
+	echo "There's only one function left, must be the bad one"
+	cat $full
+	exit 0
+fi
+
+let x=$x/2
+let y=$x+1
+
+if [ ! -f $full ]; then
+	echo "$full does not exist"
+	exit 1
+fi
+
+if [ -f $test ]; then
+	echo -n "$test exists, delete it? [y/N]"
+	read a
+	if [ "$a" != "y" -a "$a" != "Y" ]; then
+		exit 1
+	fi
+fi
+
+if [ -f $nontest ]; then
+	echo -n "$nontest exists, delete it? [y/N]"
+	read a
+	if [ "$a" != "y" -a "$a" != "Y" ]; then
+		exit 1
+	fi
+fi
+
+sed -ne "1,${x}p" $full > $test
+sed -ne "$y,\$p" $full > $nontest
diff --git a/scripts/ver_linux b/scripts/ver_linux
index 0d8bd29b1bd6..430b201f3e25 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -1,193 +1,89 @@
-#!/bin/sh
+#!/bin/awk -f
 # Before running this script please ensure that your PATH is
 # typical as you use for compilation/installation. I use
 # /bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may
 # differ on your system.
-#
-echo 'If some fields are empty or look unusual you may have an old version.'
-echo 'Compare to the current minimal requirements in Documentation/Changes.'
-echo ' '
 
-uname -a
-echo ' '
-
-gcc -dumpversion 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("GNU C\t\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-make --version 2>&1 |
-awk '/GNU Make/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("GNU Make\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-ld -v 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Binutils\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-mount --version 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	$0 = substr($0,RSTART,RLENGTH)
-	printf("Util-linux\t\t%s\nMount\t\t\t%s\n",$0,$0)
-}'
-
-depmod -V  2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Module-init-tools\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-tune2fs 2>&1 |
-awk '/^tune2fs/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("E2fsprogs\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-fsck.jfs -V 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Jfsutils\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-reiserfsck -V 2>&1 |
-awk '/^reiserfsck/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Reiserfsprogs\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-fsck.reiser4 -V 2>&1 | grep ^fsck.reiser4 | awk \
-'NR==1{print "reiser4progs          ", $2}'
-
-xfs_db -V 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Xfsprogs\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-pccardctl -V 2>&1 |
-awk '/pcmciautils/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Pcmciautils\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-cardmgr -V 2>&1| grep version | awk \
-'NR==1{print "pcmcia-cs             ", $3}'
-
-quota -V 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Quota-tools\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-pppd --version 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("PPP\t\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-isdnctrl 2>&1 | grep version | awk \
-'NR==1{print "isdn4k-utils          ", $NF}'
-
-showmount --version 2>&1 | grep nfs-utils | awk \
-'NR==1{print "nfs-utils             ", $NF}'
-
-test -r /proc/self/maps &&
-sed '
-	/.*libc-\(.*\)\.so$/!d
-	s//Linux C Library\t\t\1/
-	q
-' /proc/self/maps
-
-ldd --version 2>&1 |
-awk '/^ldd/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Dynamic linker (ldd)\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-libcpp=`ldconfig -p 2>/dev/null |
-	awk '/(libg|stdc)[+]+\.so/ {
-	print $NF
-	exit
+BEGIN {
+	usage = "If some fields are empty or look unusual you may have an old version.\n"
+	usage = usage "Compare to the current minimal requirements in Documentation/Changes.\n"
+	print usage
+
+	system("uname -a")
+	printf("\n")
+
+	printversion("GNU C", version("gcc -dumpversion 2>&1"))
+	printversion("GNU Make", version("make --version 2>&1"))
+	printversion("Binutils", version("ld -v 2>&1"))
+	printversion("Util-linux", version("mount --version 2>&1"))
+	printversion("Mount", version("mount --version 2>&1"))
+	printversion("Module-init-tools", version("depmod -V  2>&1"))
+	printversion("E2fsprogs", version("tune2fs 2>&1"))
+	printversion("Jfsutils", version("fsck.jfs -V 2>&1"))
+	printversion("Reiserfsprogs", version("reiserfsck -V 2>&1"))
+	printversion("Reiser4fsprogs", version("fsck.reiser4 -V 2>&1"))
+	printversion("Xfsprogs", version("xfs_db -V 2>&1"))
+	printversion("Pcmciautils", version("pccardctl -V 2>&1"))
+	printversion("Pcmcia-cs", version("cardmgr -V 2>&1"))
+	printversion("Quota-tools", version("quota -V 2>&1"))
+	printversion("PPP", version("pppd --version 2>&1"))
+	printversion("Isdn4k-utils", version("isdnctrl 2>&1"))
+	printversion("Nfs-utils", version("showmount --version 2>&1"))
+
+	if (system("test -r /proc/self/maps") == 0) {
+		while (getline <"/proc/self/maps" > 0) {
+			n = split($0, procmaps, "/")
+			if (/libc.*so$/ && match(procmaps[n], /[0-9]+([.]?[0-9]+)+/)) {
+				ver = substr(procmaps[n], RSTART, RLENGTH)
+				printversion("Linux C Library", ver)
+				break
+			}
+		}
 	}
-'`
-test -r "$libcpp" &&
-ls -l $libcpp |
-sed '
-	s!.*so\.!!
-	s!^!Linux C++ Library\t!
-'
-ps --version 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Procps\t\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-ifconfig --version 2>&1 |
-awk '/tools/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Net-tools\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-loadkeys -V 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	$0 = substr($0,RSTART,RLENGTH)
-	printf("Kbd\t\t\t%s\nConsole-tools\t\t%s\n",$0,$0)
-}'
 
-oprofiled --version 2>&1 | awk \
-'(NR==1 && ($2 == "oprofile")) {print "oprofile              ", $3}'
+	printversion("Dynamic linker (ldd)", version("ldd --version 2>&1"))
 
-expr --v 2>&1 |
-awk '/^expr/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Sh-utils\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
-
-udevadm --version 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Udev\t\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
+	while ("ldconfig -p 2>/dev/null" | getline > 0) {
+		if (/(libg|stdc)[+]+\.so/) {
+			libcpp = $NF
+			break
+		}
+	}
+	if (system("test -r " libcpp) == 0)
+		printversion("Linux C++ Library", version("readlink " libcpp))
+
+	printversion("Procps", version("ps --version 2>&1"))
+	printversion("Net-tools", version("ifconfig --version 2>&1"))
+	printversion("Kbd", version("loadkeys -V 2>&1"))
+	printversion("Console-tools", version("loadkeys -V 2>&1"))
+	printversion("Oprofile", version("oprofiled --version 2>&1"))
+	printversion("Sh-utils", version("expr --v 2>&1"))
+	printversion("Udev", version("udevadm --version 2>&1"))
+	printversion("Wireless-tools", version("iwconfig --version 2>&1"))
+
+	if (system("test -r /proc/modules") == 0) {
+		while ("sort /proc/modules" | getline > 0) {
+			mods = mods sep $1
+			sep = " "
+		}
+		printversion("Modules Loaded", mods)
+	}
+}
 
-iwconfig --version 2>&1 |
-awk '/version/{
-	match($0, /[0-9]+([.]?[0-9]+)+/)
-	printf("Wireless-tools\t\t%s\n",
-	substr($0,RSTART,RLENGTH))
-}'
+function version(cmd,    ver) {
+	while (cmd | getline > 0) {
+		if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) {
+			ver = substr($0, RSTART, RLENGTH)
+			break
+		}
+	}
+	close(cmd)
+	return ver
+}
 
-test -e /proc/modules &&
-sort /proc/modules |
-sed '
-	s/ .*//
-	H
-${
-	g
-	s/^\n/Modules Loaded\t\t/
-	y/\n/ /
-	q
+function printversion(name, value,  ofmt) {
+	if (value != "") {
+		ofmt = "%-20s\t%s\n"
+		printf(ofmt, name, value)
+	}
 }
-	d
-'