Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

	arch/x86/Kconfig
	arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a bit by a few lines
in the Kconfig to reduce the probability of future conflicts.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

63 files changed, 1138 insertions, 577 deletions

diff --git a/scripts/.gitignore b/scripts/.gitignore
index ef45f96cd7a5..0d1c8e217cd7 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -1,6 +1,4 @@
-#
-# Generated files
-#
+# SPDX-License-Identifier: GPL-2.0-only
 bin2c
 kallsyms
 unifdef
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 496d11c92c97..c264da2b9b30 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -31,6 +31,12 @@ cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -S -x c /dev/null -o /de
 # Return y if the linker supports <flag>, n otherwise
 ld-option = $(success,$(LD) -v $(1))
 
+# $(as-option,<flag>)
+# /dev/zero is used as output instead of /dev/null as some assembler cribs when
+# both input and output are same. Also both of them have same write behaviour so
+# can be easily substituted.
+as-option = $(success, $(CC) $(CLANG_FLAGS) $(1) -c -x assembler /dev/null -o /dev/zero)
+
 # $(as-instr,<instr>)
 # Return y if the assembler supports <instr>, n otherwise
 as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler -o /dev/null -)
@@ -42,9 +48,6 @@ $(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
 # Fail if the linker is gold as it's not capable of linking the kernel proper
 $(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
 
-# gcc version including patch level
-gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC))
-
 # machine bit flags
 #  $(m32-flag): -m32 if the compiler supports it, or an empty string otherwise.
 #  $(m64-flag): -m64 if the compiler supports it, or an empty string otherwise.
diff --git a/scripts/Makefile b/scripts/Makefile
index 5e75802b1a44..95ecf970c74c 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -2,10 +2,6 @@
 ###
 # scripts contains sources for various helper programs used throughout
 # the kernel for the build process.
-# ---------------------------------------------------------------------------
-# kallsyms:      Find all symbols in vmlinux
-
-HOST_EXTRACFLAGS += -I$(srctree)/tools/include
 
 always-$(CONFIG_BUILD_BIN2C)			+= bin2c
 always-$(CONFIG_KALLSYMS)			+= kallsyms
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index a1730d42e5f3..9fcbfac15d1d 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -46,7 +46,7 @@ include $(kbuild-file)
 include scripts/Makefile.lib
 
 # Do not include host rules unless needed
-ifneq ($(hostprogs)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),)
+ifneq ($(hostprogs)$(hostcxxlibs-y)$(hostcxxlibs-m),)
 include scripts/Makefile.host
 endif
 
@@ -65,7 +65,6 @@ endif
 
 ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
 lib-target := $(obj)/lib.a
-real-obj-y += $(obj)/lib-ksyms.o
 endif
 
 ifdef need-builtin
@@ -410,22 +409,6 @@ $(lib-target): $(lib-y) FORCE
 
 targets += $(lib-target)
 
-dummy-object = $(obj)/.lib_exports.o
-ksyms-lds = $(dot-target).lds
-
-quiet_cmd_export_list = EXPORTS $@
-cmd_export_list = $(OBJDUMP) -h $< | \
-	sed -ne '/___ksymtab/s/.*+\([^ ]*\).*/EXTERN(\1)/p' >$(ksyms-lds);\
-	rm -f $(dummy-object);\
-	echo | $(CC) $(a_flags) -c -o $(dummy-object) -x assembler -;\
-	$(LD) $(ld_flags) -r -o $@ -T $(ksyms-lds) $(dummy-object);\
-	rm $(dummy-object) $(ksyms-lds)
-
-$(obj)/lib-ksyms.o: $(lib-target) FORCE
-	$(call if_changed,export_list)
-
-targets += $(obj)/lib-ksyms.o
-
 endif
 
 # NOTE:
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 1e4206566a82..075f0cc2d8d7 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -30,7 +30,6 @@ subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
 __clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
 		   $(always) $(always-y) $(always-m) $(always-) $(targets) $(clean-files)   \
 		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
-		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
 		   $(hostcxxlibs-y) $(hostcxxlibs-m)
 
 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
index 7301ab5e2e06..50d580d77ae9 100644
--- a/scripts/Makefile.dtbinst
+++ b/scripts/Makefile.dtbinst
@@ -13,28 +13,24 @@ src := $(obj)
 PHONY := __dtbs_install
 __dtbs_install:
 
-export dtbinst_root ?= $(obj)
-
 include include/config/auto.conf
 include scripts/Kbuild.include
 include $(src)/Makefile
 
-dtbinst-files	:= $(sort $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
-dtbinst-dirs	:= $(subdir-y) $(subdir-m)
-
-# Helper targets for Installing DTBs into the boot directory
-quiet_cmd_dtb_install =	INSTALL $<
-      cmd_dtb_install =	mkdir -p $(2); cp $< $(2)
+dtbs    := $(addprefix $(dst)/, $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
+subdirs := $(addprefix $(obj)/, $(subdir-y) $(subdir-m))
 
-install-dir = $(patsubst $(dtbinst_root)%,$(INSTALL_DTBS_PATH)%,$(obj))
+__dtbs_install: $(dtbs) $(subdirs)
+	@:
 
-$(dtbinst-files): %.dtb: $(obj)/%.dtb
-	$(call cmd,dtb_install,$(install-dir))
+quiet_cmd_dtb_install = INSTALL $@
+      cmd_dtb_install = install -D $< $@
 
-$(dtbinst-dirs):
-	$(Q)$(MAKE) $(dtbinst)=$(obj)/$@
+$(dst)/%.dtb: $(obj)/%.dtb
+	$(call cmd,dtb_install)
 
-PHONY += $(dtbinst-files) $(dtbinst-dirs)
-__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
+PHONY += $(subdirs)
+$(subdirs):
+	$(Q)$(MAKE) $(dtbinst)=$@ dst=$(patsubst $(obj)/%,$(dst)/%,$@)
 
 .PHONY: $(PHONY)
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index ca08f2fe7c34..4aea7cf71d11 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -49,6 +49,7 @@ KBUILD_CFLAGS += -Wno-format
 KBUILD_CFLAGS += -Wno-sign-compare
 KBUILD_CFLAGS += -Wno-format-zero-length
 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
+KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
 endif
 
 endif
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 3b7121d43324..2045855d0b75 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -39,7 +39,6 @@ $(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE
 # They are linked as C++ code to the executable qconf
 
 __hostprogs := $(sort $(hostprogs))
-host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m))
 host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))
 
 # C code
@@ -63,7 +62,6 @@ host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
 host-cxxobjs	:= $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
 
 # Object (.o) files used by the shared libaries
-host-cshobjs	:= $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
 host-cxxshobjs	:= $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
 
 host-csingle	:= $(addprefix $(obj)/,$(host-csingle))
@@ -71,9 +69,7 @@ host-cmulti	:= $(addprefix $(obj)/,$(host-cmulti))
 host-cobjs	:= $(addprefix $(obj)/,$(host-cobjs))
 host-cxxmulti	:= $(addprefix $(obj)/,$(host-cxxmulti))
 host-cxxobjs	:= $(addprefix $(obj)/,$(host-cxxobjs))
-host-cshlib	:= $(addprefix $(obj)/,$(host-cshlib))
 host-cxxshlib	:= $(addprefix $(obj)/,$(host-cxxshlib))
-host-cshobjs	:= $(addprefix $(obj)/,$(host-cshobjs))
 host-cxxshobjs	:= $(addprefix $(obj)/,$(host-cxxshobjs))
 
 #####
@@ -141,13 +137,6 @@ $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
 	$(call if_changed_dep,host-cxxobjs)
 
 # Compile .c file, create position independent .o file
-# host-cshobjs -> .o
-quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@
-      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
-$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
-	$(call if_changed_dep,host-cshobjs)
-
-# Compile .c file, create position independent .o file
 # Note that plugin capable gcc versions can be either C or C++ based
 # therefore plugin source files have to be compilable in both C and C++ mode.
 # This is why a C++ compiler is invoked on a .c file.
@@ -158,16 +147,6 @@ $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
 	$(call if_changed_dep,host-cxxshobjs)
 
 # Link a shared library, based on position independent .o files
-# *.o -> .so shared library (host-cshlib)
-quiet_cmd_host-cshlib	= HOSTLLD -shared $@
-      cmd_host-cshlib	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
-			  $(addprefix $(obj)/, $($(target-stem)-objs)) \
-			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
-$(host-cshlib): FORCE
-	$(call if_changed,host-cshlib)
-$(call multi_depend, $(host-cshlib), .so, -objs)
-
-# Link a shared library, based on position independent .o files
 # *.o -> .so shared library (host-cxxshlib)
 quiet_cmd_host-cxxshlib	= HOSTLLD -shared $@
       cmd_host-cxxshlib	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
@@ -178,4 +157,4 @@ $(host-cxxshlib): FORCE
 $(call multi_depend, $(host-cxxshlib), .so, -objs)
 
 targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
-	   $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)
+	   $(host-cxxmulti) $(host-cxxobjs) $(host-cxxshlib) $(host-cxxshobjs)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f5ff506e4a24..b12dd5ba4896 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
 
 DT_CHECKER ?= dt-validate
 DT_BINDING_DIR := Documentation/devicetree/bindings
-DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
+# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
+DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
 
 quiet_cmd_dtb_check =	CHECK   $@
       cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index b4d3f2d122ac..957eed6a17a5 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -46,13 +46,14 @@ include scripts/Kbuild.include
 kernelsymfile := $(objtree)/Module.symvers
 modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
 
-MODPOST = scripts/mod/modpost						\
-	$(if $(CONFIG_MODVERSIONS),-m)					\
-	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)			\
-	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)			\
-	$(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS)))	\
-	$(if $(KBUILD_EXTMOD),-o $(modulesymfile))			\
-	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)			\
+MODPOST = scripts/mod/modpost								\
+	$(if $(CONFIG_MODVERSIONS),-m)							\
+	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)					\
+	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)					\
+	$(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS)))			\
+	$(if $(KBUILD_EXTMOD),-o $(modulesymfile))					\
+	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)					\
+	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) 	\
 	$(if $(KBUILD_MODPOST_WARN),-w)
 
 ifdef MODPOST_VMLINUX
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 019771b845c5..5b15bc425ec9 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -1,16 +1,26 @@
 # SPDX-License-Identifier: GPL-2.0
 ifdef CONFIG_UBSAN
+
+ifdef CONFIG_UBSAN_ALIGNMENT
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
+endif
+
+ifdef CONFIG_UBSAN_BOUNDS
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+endif
+
+ifdef CONFIG_UBSAN_MISC
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)
+endif
 
-ifdef CONFIG_UBSAN_ALIGNMENT
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
+ifdef CONFIG_UBSAN_TRAP
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error)
 endif
 
       # -fsanitize=* options makes GCC less smart than usual and
diff --git a/scripts/adjust_autoksyms.sh b/scripts/adjust_autoksyms.sh
index a904bf1f5e67..2b366d945ccb 100755
--- a/scripts/adjust_autoksyms.sh
+++ b/scripts/adjust_autoksyms.sh
@@ -1,14 +1,13 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0-only
 
-# Script to create/update include/generated/autoksyms.h and dependency files
+# Script to update include/generated/autoksyms.h and dependency files
 #
 # Copyright:	(C) 2016  Linaro Limited
 # Created by:	Nicolas Pitre, January 2016
 #
 
-# Create/update the include/generated/autoksyms.h file from the list
-# of all module's needed symbols as recorded on the second line of *.mod files.
+# Update the include/generated/autoksyms.h file.
 #
 # For each symbol being added or removed, the corresponding dependency
 # file's timestamp is updated to force a rebuild of the affected source
@@ -38,23 +37,8 @@ esac
 # We need access to CONFIG_ symbols
 . include/config/auto.conf
 
-# Generate a new ksym list file with symbols needed by the current
-# set of modules.
-cat > "$new_ksyms_file" << EOT
-/*
- * Automatically generated file; DO NOT EDIT.
- */
-
-EOT
-sed 's/ko$/mod/' modules.order |
-xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
-sort -u |
-sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$new_ksyms_file"
-
-# Special case for modversions (see modpost.c)
-if [ -n "$CONFIG_MODVERSIONS" ]; then
-	echo "#define __KSYM_module_layout 1" >> "$new_ksyms_file"
-fi
+# Generate a new symbol list file
+$CONFIG_SHELL $srctree/scripts/gen_autoksyms.sh "$new_ksyms_file"
 
 # Extract changes between old and new list and touch corresponding
 # dependency files.
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore
index a776371a3502..98ae1f509592 100644
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 fixdep
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 9ba47b0a47b9..877ca2c88246 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -77,11 +77,6 @@
  * dependencies on include/config/my/option.h for every
  * CONFIG_MY_OPTION encountered in any of the prerequisites.
  *
- * It will also filter out all the dependencies on *.ver. We need
- * to make sure that the generated version checksum are globally up
- * to date before even starting the recursive build, so it's too late
- * at this point anyway.
- *
  * We don't even try to really parse the header files, but
  * merely grep, i.e. if CONFIG_FOO is mentioned in a comment, it will
  * be picked up as well. It's not a problem with respect to
@@ -251,7 +246,7 @@ static void parse_config_file(const char *p)
 		}
 		p += 7;
 		q = p;
-		while (*q && (isalnum(*q) || *q == '_'))
+		while (isalnum(*q) || *q == '_')
 			q++;
 		if (str_ends_with(p, q - p, "_MODULE"))
 			r = q - 7;
@@ -299,8 +294,7 @@ static void *read_file(const char *filename)
 static int is_ignored_file(const char *s, int len)
 {
 	return str_ends_with(s, len, "include/generated/autoconf.h") ||
-	       str_ends_with(s, len, "include/generated/autoksyms.h") ||
-	       str_ends_with(s, len, ".ver");
+	       str_ends_with(s, len, "include/generated/autoksyms.h");
 }
 
 /*
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py
index 90baf7d70911..f43d193aff3a 100755
--- a/scripts/bpf_helpers_doc.py
+++ b/scripts/bpf_helpers_doc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2018-2019 Netronome Systems, Inc.
@@ -400,6 +400,7 @@ class PrinterHelpers(Printer):
             'struct bpf_fib_lookup',
             'struct bpf_perf_event_data',
             'struct bpf_perf_event_value',
+            'struct bpf_pidns_info',
             'struct bpf_sock',
             'struct bpf_sock_addr',
             'struct bpf_sock_ops',
@@ -435,6 +436,7 @@ class PrinterHelpers(Printer):
             'struct bpf_fib_lookup',
             'struct bpf_perf_event_data',
             'struct bpf_perf_event_value',
+            'struct bpf_pidns_info',
             'struct bpf_sock',
             'struct bpf_sock_addr',
             'struct bpf_sock_ops',
diff --git a/scripts/check-sysctl-docs b/scripts/check-sysctl-docs
new file mode 100755
index 000000000000..8bcb9e26c7bc
--- /dev/null
+++ b/scripts/check-sysctl-docs
@@ -0,0 +1,181 @@
+#!/usr/bin/gawk -f
+# SPDX-License-Identifier: GPL-2.0
+
+# Script to check sysctl documentation against source files
+#
+# Copyright (c) 2020 Stephen Kitt
+
+# Example invocation:
+#	scripts/check-sysctl-docs -vtable="kernel" \
+#		Documentation/admin-guide/sysctl/kernel.rst \
+#		$(git grep -l register_sysctl_)
+#
+# Specify -vdebug=1 to see debugging information
+
+BEGIN {
+    if (!table) {
+	print "Please specify the table to look for using the table variable" > "/dev/stderr"
+	exit 1
+    }
+}
+
+# The following globals are used:
+# children: maps ctl_table names and procnames to child ctl_table names
+# documented: maps documented entries (each key is an entry)
+# entries: maps ctl_table names and procnames to counts (so
+#          enumerating the subkeys for a given ctl_table lists its
+#          procnames)
+# files: maps procnames to source file names
+# paths: maps ctl_path names to paths
+# curpath: the name of the current ctl_path struct
+# curtable: the name of the current ctl_table struct
+# curentry: the name of the current proc entry (procname when parsing
+#           a ctl_table, constructed path when parsing a ctl_path)
+
+
+# Remove punctuation from the given value
+function trimpunct(value) {
+    while (value ~ /^["&]/) {
+	value = substr(value, 2)
+    }
+    while (value ~ /[]["&,}]$/) {
+	value = substr(value, 1, length(value) - 1)
+    }
+    return value
+}
+
+# Print the information for the given entry
+function printentry(entry) {
+    seen[entry]++
+    printf "* %s from %s", entry, file[entry]
+    if (documented[entry]) {
+	printf " (documented)"
+    }
+    print ""
+}
+
+
+# Stage 1: build the list of documented entries
+FNR == NR && /^=+$/ {
+    if (prevline ~ /Documentation for/) {
+	# This is the main title
+	next
+    }
+
+    # The previous line is a section title, parse it
+    $0 = prevline
+    if (debug) print "Parsing " $0
+    inbrackets = 0
+    for (i = 1; i <= NF; i++) {
+	if (length($i) == 0) {
+	    continue
+	}
+	if (!inbrackets && substr($i, 1, 1) == "(") {
+	    inbrackets = 1
+	}
+	if (!inbrackets) {
+	    token = trimpunct($i)
+	    if (length(token) > 0 && token != "and") {
+		if (debug) print trimpunct($i)
+		documented[trimpunct($i)]++
+	    }
+	}
+	if (inbrackets && substr($i, length($i), 1) == ")") {
+	    inbrackets = 0
+	}
+    }
+}
+
+FNR == NR {
+    prevline = $0
+    next
+}
+
+
+# Stage 2: process each file and find all sysctl tables
+BEGINFILE {
+    delete children
+    delete entries
+    delete paths
+    curpath = ""
+    curtable = ""
+    curentry = ""
+    if (debug) print "Processing file " FILENAME
+}
+
+/^static struct ctl_path/ {
+    match($0, /static struct ctl_path ([^][]+)/, tables)
+    curpath = tables[1]
+    if (debug) print "Processing path " curpath
+}
+
+/^static struct ctl_table/ {
+    match($0, /static struct ctl_table ([^][]+)/, tables)
+    curtable = tables[1]
+    if (debug) print "Processing table " curtable
+}
+
+/^};$/ {