Enable IB out-of-order by default in mlx5

This series from Or changes default of IB out-of-order feature and
allows to the RDMA users to decide if they need to wait for completion
for all segments or it is enough to wait for last segment completion only.

Thanks

Signed-off-by: Leon Romanovsky <leon@kernel.org>

13 files changed, 353 insertions, 1293 deletions

diff --git a/scripts/.gitignore b/scripts/.gitignore
index feb43045d1b1..6e9ce6720a05 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -3,7 +3,6 @@
 /generate_rust_target
 /insert-sys-cert
 /kallsyms
-/list-gitignored
 /module.lds
 /recordmcount
 /sign-file
diff --git a/scripts/Makefile b/scripts/Makefile
index e8917975905c..32b6ba722728 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -38,7 +38,7 @@ HOSTCFLAGS_sorttable.o += -DMCOUNT_SORT_ENABLED
 endif
 
 # The following programs are only built on demand
-hostprogs += list-gitignored unifdef
+hostprogs += unifdef
 
 # The module linker script is preprocessed on demand
 targets += module.lds
diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index b941e6341b36..61f72eb8d9be 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -2,6 +2,7 @@
 # Makefile for the different targets used to generate full packages of a kernel
 
 include $(srctree)/scripts/Kbuild.include
+include $(srctree)/scripts/Makefile.lib
 
 KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE))
 KBUILD_PKG_ROOTCMD ?="fakeroot -u"
@@ -26,54 +27,46 @@ fi ; \
 tar -I $(KGZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \
 	--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3)
 
-# .tmp_filelist .tmp_filelist_exclude
+# tarball compression
 # ---------------------------------------------------------------------------
 
-scripts/list-gitignored: FORCE
-	$(Q)$(MAKE) -f $(srctree)/Makefile scripts_package
+%.tar.gz: %.tar
+	$(call cmd,gzip)
 
-# 1f5d3a6b6532e25a5cdf1f311956b2b03d343a48 removed '*.rej' from .gitignore,
-# but it is definitely a generated file.
-filechk_filelist = \
-	$< --exclude='*.rej' --output=$@_exclude --prefix=./ --rootdir=$(srctree) --stat=-
+%.tar.bz2: %.tar
+	$(call cmd,bzip2)
 
-.tmp_filelist: scripts/list-gitignored FORCE
-	$(call filechk,filelist)
+%.tar.xz: %.tar
+	$(call cmd,xzmisc)
 
-# tarball
-# ---------------------------------------------------------------------------
-
-quiet_cmd_tar = TAR     $@
-      cmd_tar = tar -c -f $@ $(tar-compress-opt) $(tar-exclude-opt) \
-                --owner=0 --group=0 --sort=name \
-                --transform 's:^\.:$*:S' -C $(tar-rootdir) .
-
-tar-rootdir := $(srctree)
+%.tar.zst: %.tar
+	$(call cmd,zstd)
 
-%.tar:
-	$(call cmd,tar)
-
-%.tar.gz: private tar-compress-opt := -I $(KGZIP)
-%.tar.gz:
-	$(call cmd,tar)
+# Git
+# ---------------------------------------------------------------------------
 
-%.tar.bz2: private tar-compress-opt := -I $(KBZIP2)
-%.tar.bz2:
-	$(call cmd,tar)
+filechk_HEAD = git -C $(srctree) rev-parse --verify HEAD 2>/dev/null
 
-%.tar.xz: private tar-compress-opt := -I $(XZ)
-%.tar.xz:
-	$(call cmd,tar)
+.tmp_HEAD: check-git FORCE
+	$(call filechk,HEAD)
 
-%.tar.zst: private tar-compress-opt := -I $(ZSTD)
-%.tar.zst:
-	$(call cmd,tar)
+PHONY += check-git
+check-git:
+	@if ! $(srctree)/scripts/check-git; then \
+		echo >&2 "error: creating source package requires git repository"; \
+		false; \
+	fi
 
 # Linux source tarball
 # ---------------------------------------------------------------------------
 
-linux.tar.gz: tar-exclude-opt = --exclude=./$@ --exclude-from=$<_exclude
-linux.tar.gz: .tmp_filelist
+quiet_cmd_archive_linux = ARCHIVE $@
+      cmd_archive_linux = \
+	git -C $(srctree) archive --output=$$(realpath $@) --prefix=$(basename $@)/ $$(cat $<)
+
+targets += linux.tar
+linux.tar: .tmp_HEAD FORCE
+	$(call if_changed,archive_linux)
 
 # rpm-pkg
 # ---------------------------------------------------------------------------
@@ -89,7 +82,7 @@ PHONY += srcrpm-pkg
 srcrpm-pkg: linux.tar.gz
 	$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
 	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE)-linux -bs kernel.spec \
-	--define='_smp_mflags %{nil}' --define='_sourcedir .' --define='_srcrpmdir .'
+	--define='_smp_mflags %{nil}' --define='_sourcedir rpmbuild/SOURCES' --define='_srcrpmdir .'
 
 # binrpm-pkg
 # ---------------------------------------------------------------------------
@@ -148,74 +141,62 @@ snap-pkg:
 # dir-pkg tar*-pkg - tarball targets
 # ---------------------------------------------------------------------------
 
-tar-pkg-tarball = linux-$(KERNELRELEASE)-$(ARCH).$(1)
-tar-pkg-phony = $(subst .,,$(1))-pkg
-
 tar-install: FORCE
 	$(Q)$(MAKE) -f $(srctree)/Makefile
 	+$(Q)$(srctree)/scripts/package/buildtar $@
 
+quiet_cmd_tar = TAR     $@
+      cmd_tar = cd $<; tar cf ../$@ --owner=root --group=root --sort=name *
+
+linux-$(KERNELRELEASE)-$(ARCH).tar: tar-install
+	$(call cmd,tar)
+
 PHONY += dir-pkg
 dir-pkg: tar-install
 	@echo "Kernel tree successfully created in $<"
 
-define tar-pkg-rule
-PHONY += $(tar-pkg-phony)
-$(tar-pkg-phony): $(tar-pkg-tarball)
+PHONY += tar-pkg
+tar-pkg: linux-$(KERNELRELEASE)-$(ARCH).tar
 	@:
 
-$(tar-pkg-tarball): private tar-rootdir := tar-install
-$(tar-pkg-tarball): tar-install
-endef
-
-$(foreach x, tar tar.gz tar.bz2 tar.xz tar.zst, $(eval $(call tar-pkg-rule,$(x))))
+tar%-pkg: linux-$(KERNELRELEASE)-$(ARCH).tar.% FORCE
+	@:
 
 # perf-tar*-src-pkg - generate a source tarball with perf source
 # ---------------------------------------------------------------------------
 
-perf-tar-src-pkg-tarball = perf-$(KERNELVERSION).$(1)
-perf-tar-src-pkg-phony   = perf-$(subst .,,$(1))-src-pkg
-
-quiet_cmd_stage_perf_src = STAGE   $@
-      cmd_stage_perf_src = \
-	rm -rf $@; \
-	mkdir -p $@; \
-	tar -c -f - --exclude-from=$<_exclude -C $(srctree) --files-from=$(srctree)/tools/perf/MANIFEST | \
-	tar -x -f - -C $@
-
-.tmp_perf: .tmp_filelist
-	$(call cmd,stage_perf_src)
-
-filechk_perf_head = \
-	if test -z "$(git -C $(srctree) rev-parse --show-cdup 2>/dev/null)" && \
-	       head=$$(git -C $(srctree) rev-parse --verify HEAD 2>/dev/null); then \
-		echo $$head; \
-	else \
-		echo "not a git tree"; \
-	fi
+.tmp_perf:
+	$(Q)mkdir .tmp_perf
 
-.tmp_perf/HEAD: .tmp_perf FORCE
-	$(call filechk,perf_head)
+.tmp_perf/HEAD: .tmp_HEAD | .tmp_perf
+	$(call cmd,copy)
 
 quiet_cmd_perf_version_file = GEN     $@
       cmd_perf_version_file = cd $(srctree)/tools/perf; util/PERF-VERSION-GEN $(dir $(abspath $@))
 
-# PERF-VERSION-FILE and HEAD are independent, but this avoids updating the
+# PERF-VERSION-FILE and .tmp_HEAD are independent, but this avoids updating the
 # timestamp of PERF-VERSION-FILE.
 # The best is to fix tools/perf/util/PERF-VERSION-GEN.
-.tmp_perf/PERF-VERSION-FILE: .tmp_perf/HEAD $(srctree)/tools/perf/util/PERF-VERSION-GEN
+.tmp_perf/PERF-VERSION-FILE: .tmp_HEAD $(srctree)/tools/perf/util/PERF-VERSION-GEN | .tmp_perf
 	$(call cmd,perf_version_file)
 
-define perf-tar-src-pkg-rule
-PHONY += $(perf-tar-src-pkg-phony)
-$(perf-tar-src-pkg-phony): $(perf-tar-src-pkg-tarball)
-	@:
+quiet_cmd_archive_perf = ARCHIVE $@
+      cmd_archive_perf = \
+	git -C $(srctree) archive --output=$$(realpath $@) --prefix=$(basename $@)/ \
+	--add-file=$$(realpath $(word 2, $^)) \
+	--add-file=$$(realpath $(word 3, $^)) \
+	$$(cat $(word 2, $^))^{tree} $$(cat $<)
 
-$(perf-tar-src-pkg-tarball): private tar-rootdir := .tmp_perf
-$(perf-tar-src-pkg-tarball): .tmp_filelist .tmp_perf/HEAD .tmp_perf/PERF-VERSION-FILE
-endef
+targets += perf-$(KERNELVERSION).tar
+perf-$(KERNELVERSION).tar: tools/perf/MANIFEST .tmp_perf/HEAD .tmp_perf/PERF-VERSION-FILE FORCE
+	$(call if_changed,archive_perf)
+
+PHONY += perf-tar-src-pkg
+perf-tar-src-pkg: perf-$(KERNELVERSION).tar
+	@:
 
-$(foreach x, tar tar.gz tar.bz2 tar.xz tar.zst, $(eval $(call perf-tar-src-pkg-rule,$(x))))
+perf-tar%-src-pkg: perf-$(KERNELVERSION).tar.% FORCE
+	@:
 
 # Help text displayed when executing 'make help'
 # ---------------------------------------------------------------------------
@@ -243,4 +224,13 @@ help:
 PHONY += FORCE
 FORCE:
 
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building above, using $(if_changed{,_dep}). As an
+# optimization, we don't need to read them if the target does not
+# exist, we will rebuild anyway in that case.
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+
 .PHONY: $(PHONY)
diff --git a/scripts/check-git b/scripts/check-git
new file mode 100755
index 000000000000..2ca6c5df10dd
--- /dev/null
+++ b/scripts/check-git
@@ -0,0 +1,14 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# succeed if we are in a git repository
+
+srctree="$(dirname $0)/.."
+
+if ! git -C "${srctree}" rev-parse --verify HEAD >/dev/null 2>/dev/null; then
+	exit 1
+fi
+
+if ! test -z $(git -C "${srctree}" rev-parse --show-cdup 2>/dev/null); then
+	exit 1
+fi
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 8a68179a98a3..a239a87e7bec 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -119,6 +119,7 @@ static bool is_ignored_symbol(const char *name, char type)
 		"kallsyms_markers",
 		"kallsyms_token_table",
 		"kallsyms_token_index",
+		"kallsyms_seqs_of_names",
 		/* Exclude linker generated symbols which vary between passes */
 		"_SDA_BASE_",		/* ppc */
 		"_SDA2_BASE_",		/* ppc */
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index b7c9f1dd5e42..992575f1e976 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -1226,10 +1226,12 @@ static void (*conf_changed_callback)(void);
 
 void conf_set_changed(bool val)
 {
-	if (conf_changed_callback && conf_changed != val)
-		conf_changed_callback();
+	bool changed = conf_changed != val;
 
 	conf_changed = val;
+
+	if (conf_changed_callback && changed)
+		conf_changed_callback();
 }
 
 bool conf_get_changed(void)
diff --git a/scripts/list-gitignored.c b/scripts/list-gitignored.c
deleted file mode 100644
index f9941f8dcd2b..000000000000
--- a/scripts/list-gitignored.c
+++ /dev/null
@@ -1,1057 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-//
-// Traverse the source tree, parsing all .gitignore files, and print file paths
-// that are ignored by git.
-// The output is suitable to the --exclude-from option of tar.
-// This is useful until the --exclude-vcs-ignores option gets working correctly.
-//
-// Copyright (C) 2023 Masahiro Yamada <masahiroy@kernel.org>
-//                      (a lot of code imported from GIT)
-
-#include <assert.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-// Imported from commit 23c56f7bd5f1667f8b793d796bf30e39545920f6 in GIT
-//
-//---------------------------(IMPORT FROM GIT BEGIN)---------------------------
-
-// Copied from environment.c
-
-static bool ignore_case;
-
-// Copied from git-compat-util.h
-
-/* Sane ctype - no locale, and works with signed chars */
-#undef isascii
-#undef isspace
-#undef isdigit
-#undef isalpha
-#undef isalnum
-#undef isprint
-#undef islower
-#undef isupper
-#undef tolower
-#undef toupper
-#undef iscntrl
-#undef ispunct
-#undef isxdigit
-
-static const unsigned char sane_ctype[256];
-#define GIT_SPACE 0x01
-#define GIT_DIGIT 0x02
-#define GIT_ALPHA 0x04
-#define GIT_GLOB_SPECIAL 0x08
-#define GIT_REGEX_SPECIAL 0x10
-#define GIT_PATHSPEC_MAGIC 0x20
-#define GIT_CNTRL 0x40
-#define GIT_PUNCT 0x80
-#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
-#define isascii(x) (((x) & ~0x7f) == 0)
-#define isspace(x) sane_istest(x,GIT_SPACE)
-#define isdigit(x) sane_istest(x,GIT_DIGIT)
-#define isalpha(x) sane_istest(x,GIT_ALPHA)
-#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
-#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
-#define islower(x) sane_iscase(x, 1)
-#define isupper(x) sane_iscase(x, 0)
-#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
-#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
-#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
-		GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
-#define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1)
-#define tolower(x) sane_case((unsigned char)(x), 0x20)
-#define toupper(x) sane_case((unsigned char)(x), 0)
-
-static inline int sane_case(int x, int high)
-{
-	if (sane_istest(x, GIT_ALPHA))
-		x = (x & ~0x20) | high;
-	return x;
-}
-
-static inline int sane_iscase(int x, int is_lower)
-{
-	if (!sane_istest(x, GIT_ALPHA))
-		return 0;
-
-	if (is_lower)
-		return (x & 0x20) != 0;
-	else
-		return (x & 0x20) == 0;
-}
-
-// Copied from ctype.c
-
-enum {
-	S = GIT_SPACE,
-	A = GIT_ALPHA,
-	D = GIT_DIGIT,
-	G = GIT_GLOB_SPECIAL,	/* *, ?, [, \\ */
-	R = GIT_REGEX_SPECIAL,	/* $, (, ), +, ., ^, {, | */
-	P = GIT_PATHSPEC_MAGIC, /* other non-alnum, except for ] and } */
-	X = GIT_CNTRL,
-	U = GIT_PUNCT,
-	Z = GIT_CNTRL | GIT_SPACE
-};
-
-static const unsigned char sane_ctype[256] = {
-	X, X, X, X, X, X, X, X, X, Z, Z, X, X, Z, X, X,		/*   0.. 15 */
-	X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X,		/*  16.. 31 */
-	S, P, P, P, R, P, P, P, R, R, G, R, P, P, R, P,		/*  32.. 47 */
-	D, D, D, D, D, D, D, D, D, D, P, P, P, P, P, G,		/*  48.. 63 */
-	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,		/*  64.. 79 */
-	A, A, A, A, A, A, A, A, A, A, A, G, G, U, R, P,		/*  80.. 95 */
-	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,		/*  96..111 */
-	A, A, A, A, A, A, A, A, A, A, A, R, R, U, P, X,		/* 112..127 */
-	/* Nothing in the 128.. range */
-};
-
-// Copied from hex.c
-
-static const signed char hexval_table[256] = {
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 00-07 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 08-0f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 10-17 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 18-1f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 20-27 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 28-2f */
-	  0,  1,  2,  3,  4,  5,  6,  7,		/* 30-37 */
-	  8,  9, -1, -1, -1, -1, -1, -1,		/* 38-3f */
-	 -1, 10, 11, 12, 13, 14, 15, -1,		/* 40-47 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 48-4f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 50-57 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 58-5f */
-	 -1, 10, 11, 12, 13, 14, 15, -1,		/* 60-67 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 68-67 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 70-77 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 78-7f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 80-87 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 88-8f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 90-97 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* 98-9f */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* a0-a7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* a8-af */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* b0-b7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* b8-bf */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* c0-c7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* c8-cf */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* d0-d7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* d8-df */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* e0-e7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* e8-ef */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* f0-f7 */
-	 -1, -1, -1, -1, -1, -1, -1, -1,		/* f8-ff */
-};
-
-// Copied from wildmatch.h
-
-#define WM_CASEFOLD 1
-#define WM_PATHNAME 2
-
-#define WM_NOMATCH 1
-#define WM_MATCH 0
-#define WM_ABORT_ALL -1
-#define WM_ABORT_TO_STARSTAR -2
-
-// Copied from wildmatch.c
-
-typedef unsigned char uchar;
-
-// local modification: remove NEGATE_CLASS(2)
-
-#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
-				    && *(class) == *(litmatch) \
-				    && strncmp((char*)class, litmatch, len) == 0)
-
-// local modification: simpilify macros
-#define ISBLANK(c) ((c) == ' ' || (c) == '\t')
-#define ISGRAPH(c) (isprint(c) && !isspace(c))
-#define ISPRINT(c) isprint(c)
-#define ISDIGIT(c) isdigit(c)
-#define ISALNUM(c) isalnum(c)
-#define ISALPHA(c) isalpha(c)
-#define ISCNTRL(c) iscntrl(c)
-#define ISLOWER(c) islower(c)
-#define ISPUNCT(c) ispunct(c)
-#define ISSPACE(c) isspace(c)
-#define ISUPPER(c) isupper(c)
-#define ISXDIGIT(c) isxdigit(c)
-
-/* Match pattern "p" against "text" */
-static int dowild(const uchar *p, const uchar *text, unsigned int flags)
-{
-	uchar p_ch;
-	const uchar *pattern = p;
-
-	for ( ; (p_ch = *p) != '\0'; text++, p++) {
-		int matched, match_slash, negated;
-		uchar t_ch, prev_ch;
-		if ((t_ch = *text) == '\0' && p_ch != '*')
-			return WM_ABORT_ALL;
-		if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
-			t_ch = tolower(t_ch);
-		if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
-			p_ch = tolower(p_ch);
-		switch (p_ch) {
-		case '\\':
-			/* Literal match with following character.  Note that the test
-			 * in "default" handles the p[1] == '\0' failure case. */
-			p_ch = *++p;
-			/* FALLTHROUGH */
-		default:
-			if (t_ch != p_ch)
-				return WM_NOMATCH;
-			continue;
-		case '?':
-			/* Match anything but '/'. */
-			if ((flags & WM_PATHNAME) && t_ch == '/')
-				return WM_NOMATCH;
-			continue;
-		case '*':
-			if (*++p == '*') {
-				const uchar *prev_p = p - 2;
-				while (*++p == '*') {}
-				if (!(flags & WM_PATHNAME))
-					/* without WM_PATHNAME, '*' == '**' */
-					match_slash = 1;
-				else if ((prev_p < pattern || *prev_p == '/') &&
-				    (*p == '\0' || *p == '/' ||
-				     (p[0] == '\\' && p[1] == '/'))) {
-					/*
-					 * Assuming we already match 'foo/' and are at
-					 * <star star slash>, just assume it matches
-					 * nothing and go ahead match the rest of the
-					 * pattern with the remaining string. This
-					 * helps make foo/<*><*>/bar (<> because
-					 * otherwise it breaks C comment syntax) match
-					 * both foo/bar and foo/a/bar.
-					 */
-					if (p[0] == '/' &&
-					    dowild(p + 1, text, flags) == WM_MATCH)
-						return WM_MATCH;
-					match_slash = 1;
-				} else /* WM_PATHNAME is set */
-					match_slash = 0;
-			} else
-				/* without WM_PATHNAME, '*' == '**' */
-				match_slash = flags & WM_PATHNAME ? 0 : 1;
-			if (*p == '\0') {
-				/* Trailing "**" matches everything.  Trailing "*" matches
-				 * only if there are no more slash characters. */
-				if (!match_slash) {
-					if (strchr((char *)text, '/'))
-						return WM_NOMATCH;
-				}
-				return WM_MATCH;
-			} else if (!match_slash && *p == '/') {
-				/*
-				 * _one_ asterisk followed by a slash
-				 * with WM_PATHNAME matches the next
-				 * directory
-				 */
-				const char *slash = strchr((char*)text, '/');
-				if (!slash)
-					return WM_NOMATCH;
-				text = (const uchar*)slash;
-				/* the slash is consumed by the top-level for loop */
-				break;
-			}
-			while (1) {
-				if (t_ch == '\0')
-					break;
-				/*
-				 * Try to advance faster when an asterisk is
-				 * followed by a literal. We know in this case
-				 * that the string before the literal
-				 * must belong to "*".
-				 * If match_slash is false, do not look past
-				 * the first slash as it cannot belong to '*'.
-				 */
-				if (!is_glob_special(*p)) {
-					p_ch = *p;
-					if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
-						p_ch = tolower(p_ch);
-					while ((t_ch = *text) != '\0' &&
-					       (match_slash || t_ch != '/')) {
-						if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
-							t_ch = tolower(t_ch);
-						if (t_ch == p_ch)
-							break;
-						text++;
-					}
-					if (t_ch != p_ch)
-						return WM_NOMATCH;
-				}
-				if ((matched = dowild(p, text, flags)) != WM_NOMATCH) {
-					if (!match_slash || matched != WM_ABORT_TO_STARSTAR)
-						return matched;
-				} else if (!match_slash && t_ch == '/')
-					return WM_ABORT_TO_STARSTAR;
-				t_ch = *++text;
-			}
-			return WM_ABORT_ALL;
-		case '[':
-			p_ch = *++p;
-			if (p_ch == '^')
-				p_ch = '!';
-			/* Assign literal 1/0 because of "matched" comparison. */
-			negated = p_ch == '!' ? 1 : 0;
-			if (negated) {
-				/* Inverted character class. */
-				p_ch = *++p;
-			}
-			prev_ch = 0;
-			matched = 0;
-			do {
-				if (!p_ch)
-					return WM_ABORT_ALL;
-				if (p_ch == '\\') {
-					p_ch = *++p;
-					if (!p_ch)
-						return WM_ABORT_ALL;
-					if (t_ch == p_ch)
-						matched = 1;
-				} else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
-					p_ch = *++p;
-					if (p_ch == '\\') {
-						p_ch = *++p;
-						if (!p_ch)
-							return WM_ABORT_ALL;
-					}
-					if (t_ch <= p_ch && t_ch >= prev_ch)
-						matched = 1;
-					else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch)) {
-						uchar t_ch_upper = toupper(t_ch);
-						if (t_ch_upper <= p_ch && t_ch_upper >= prev_ch)
-							matched = 1;
-					}
-					p_ch = 0; /* This makes "prev_ch" get set to 0. */
-				} else if (p_ch == '[' && p[1] == ':') {
-					const uchar *s;
-					int i;
-					for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {} /*SHARED ITERATOR*/
-					if (!p_ch)
-						return WM_ABORT_ALL;
-					i = p - s - 1;
-					if (i < 0 || p[-1] != ':') {
-						/* Didn't find ":]", so treat like a normal set. */
-						p = s - 2;
-						p_ch = '[';
-						if (t_ch == p_ch)
-							matched = 1;
-						continue;
-					}
-					if (CC_EQ(s,i, "alnum")) {
-						if (ISALNUM(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "alpha")) {
-						if (ISALPHA(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "blank")) {
-						if (ISBLANK(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "cntrl")) {
-						if (ISCNTRL(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "digit")) {
-						if (ISDIGIT(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "graph")) {
-						if (ISGRAPH(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "lower")) {
-						if (ISLOWER(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "print")) {
-						if (ISPRINT(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "punct")) {
-						if (ISPUNCT(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "space")) {
-						if (ISSPACE(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "upper")) {
-						if (ISUPPER(t_ch))
-							matched = 1;
-						else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch))
-							matched = 1;
-					} else if (CC_EQ(s,i, "xdigit")) {
-						if (ISXDIGIT(t_ch))
-							matched = 1;
-					} else /* malformed [:class:] string */
-						return WM_ABORT_ALL;
-					p_ch = 0; /* This makes "prev_ch" get set to 0. */
-				} else if (t_ch == p_ch)
-					matched = 1;
-			} while (prev_ch = p_ch, (p_ch = *++p) != ']');
-			if (matched == negated ||
-			    ((flags & WM_PATHNAME) && t_ch == '/'))
-				return WM_NOMATCH;
-			continue;
-		}
-	}
-
-	return *text ? WM_NOMATCH : WM_MATCH;
-}
-
-/* Match the "pattern" against the "text" string. */
-static int wildmatch(const char *pattern, const char *text, unsigned int flags)
-{
-	// local modification: move WM_CASEFOLD here
-	if (ignore_case)
-		flags |= WM_CASEFOLD;
-
-	return dowild((const uchar*)pattern, (const uchar*)text, flags);
-}
-
-// Copied from dir.h
-
-#define PATTERN_FLAG_NODIR 1
-#define PATTERN_FLAG_ENDSWITH 4
-#define PATTERN_FLAG_MUSTBEDIR 8
-#define PATTERN_FLAG_NEGATIVE 16
-
-// Copied from dir.c
-
-static int fspathncmp(const char *a, const char *b, size_t count)
-{
-	return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
-}
-
-static int simple_length(const char *match)
-{
-	int len = -1;
-
-	for (;;) {
-		unsigned char c = *match++;
-		len++;
-		if (c == '\0' || is_glob_special(c))
-			return len;
-	}
-}
-
-static int no_wildcard(const char *string)
-{
-	return string[simple_length(string)] == '\0';
-}
-
-static void parse_path_pattern(const char **pattern,
-			       int *patternlen,
-			       unsigned *flags,
-			       int *nowildcardlen)
-{
-	const char *p = *pattern;
-	size_t i, len;
-
-	*flags = 0;
-	if (*p == '!') {
-		*flags |= PATTERN_FLAG_NEGATIVE;
-		p++;
-	}
-	len = strlen(p);
-	if (len && p[len - 1] == '/') {
-		len--;
-		*flags |= PATTERN_FLAG_MUSTBEDIR;
-	}
-	for (i = 0; i < len; i++) {
-		if (p[i] == '/')
-			break;
-	}
-	if (i == len)
-		*flags |= PATTERN_FLAG_NODIR;
-	*nowildcardlen = simple_length(p);
-	/*
-	 * we should have excluded the trailing slash from 'p' too,
-	 * but that's one more allocation. Instead just make sure
-	 * nowildcardlen does not exceed real patternlen
-	 */
-	if (*nowildcardlen > len)
-		*nowildcardlen = len;
-	if (*p == '*' && no_wildcard(p + 1))
-		*flags |= PATTERN_FLAG_ENDSWITH;
-	*pattern = p;
-	*patternlen = len;
-}
-
-static void trim_trailing_spaces(char *buf)
-{
-	char *p, *last_space = NULL;
-
-	for (p = buf; *p; p++)
-		switch (*p) {
-		case ' ':
-			if (!last_space)
-				last_space = p;
-			break;
-		case '\\':
-			p++;
-			if (!*p)
-				return;
-			/* fallthrough */
-		default:
-			last_space = NULL;
-		}
-
-	if (last_space)
-		*last_space = '\0';
-}
-
-static int match_basename(const char *basename, int basenamelen,
-			  const char *pattern, int prefix, int patternlen,
-			  unsigned flags)
-{
-	if (prefix == patternlen) {
-		if (patternlen == basenamelen &&
-		    !fspathncmp(pattern, basename, basenamelen))
-			return 1;
-	} else if (flags & PATTERN_FLAG_ENDSWITH) {
-		/* "*literal" matching against "fooliteral" */
-		if (patternlen - 1 <= basenamelen &&
-		    !fspathncmp(pattern + 1,
-				   basename + basenamelen - (patternlen - 1),
-				   patternlen - 1))
-			return 1;
-	} else {
-		// local modification: call wildmatch() directly
-		if (!wildmatch(pattern, basename, flags))
-			return 1;
-	}
-	return 0;
-}
-
-static int match_pathname(const char *pathname, int pathlen,
-			  const char *base, int baselen,
-			  const char *pattern, int prefix, int patternlen)
-{
-	// local modification: remove local variables
-
-	/*
-	 * match with FNM_PATHNAME; the pattern has base implicitly
-	 * in front of it.
-	 */
-	if (*pattern == '/') {
-		pattern++;
-		patternlen--;
-		prefix--;
-	}
-
-	/*
-	 * baselen does not count the trailing slash. base[] may or
-	 * may not end with a trailing slash though.
-	 */
-	if (pathlen < baselen + 1 ||
-	    (baselen && pathname[baselen] != '/') ||
-	    fspathncmp(pathname, base, baselen))
-		return 0;
-
-	// local modification: simplified because always baselen > 0
-	pathname += baselen + 1;
-	pathlen -= baselen + 1;
-
-	if (prefix) {
-		/*
-		 * if the non-wildcard part is longer than the
-		 * remaining pathname, surely it cannot match.
-		 */
-		if (prefix > pathlen)
-			return 0;
-
-		if (fspathncmp(pattern, pathname, prefix))
-			return 0;
-		pattern += prefix;
-		patternlen -= prefix;
-		pathname += prefix;
-		pathlen -= prefix;
-
-		/*
-		 * If the whole pattern did not have a wildcard,
-		 * then our prefix match is all we need; we
-		 * do not need to call fnmatch at all.
-		 */
-		if (!patternlen && !pathlen)
-			return 1;
-	}
-
-	// local modification: call wildmatch() directly
-	return !wildmatch(pattern, pathname, WM_PATHNAME);
-}
-
-// Copied from git/utf8.c
-
-static const char utf8_bom[] = "\357\273\277";
-
-//----------------------------(IMPORT FROM GIT END)----------------------------
-
-struct pattern {
-	unsigned int flags;
-	int nowildcardlen;
-	int patternlen;
-	int dirlen;
-	char pattern[];
-};
-
-static struct pattern **pattern_list;
-static int nr_patterns, alloced_patterns;
-
-// Remember the number of patterns at each directory level
-static int *nr_patterns_at;
-// Track the current/max directory level;
-static int depth, max_depth;
-static bool debug_on;
-static FILE *out_fp, *stat_fp;
-static char *prefix = "";
-static char *progname;
-
-static void __attribute__((noreturn)) perror_exit(const char *s)
-{
-	perror(s);
-
-	exit(EXIT_FAILURE);
-}
-
-static void __attribute__((noreturn)) error_exit(const char *fmt, ...)
-{
-	va_list args;
-
-	fprintf(stderr, "%s: error: ", progname);
-
-	va_start(args, fmt);
-	vfprintf(stderr, fmt, args);
-	va_end(args);
-
-	exit(EXIT_FAILURE);
-}
-
-static void debug(const char *fmt, ...)
-{
-	va_list args;
-	int i;
-
-	if (!debug_on)
-		return;
-
-	fprintf(stderr, "[DEBUG] ");
-
-	for (i = 0; i < depth * 2; i++)
-		fputc(' ', stderr);
-
-	va_start(args, fmt);
-	vfprintf(stderr, fmt, args);
-	va_end(args);
-}
-
-static void *xrealloc(void *ptr, size_t size)
-{
-	ptr = realloc(ptr, size);
-	if (!ptr)
-		perror_exit(progname);
-
-	return ptr;
-}
-
-static void *xmalloc(size_t size)
-{
-	return xrealloc(NULL, size);
-}
-
-// similar to last_matching_pattern_from_list() in GIT
-static bool is_ignored(const char *path, int pathlen, int dirlen, bool is_dir)
-{
-	int i;
-
-	// Search in the reverse order because the last matching pattern wins.
-	for (i = nr_patterns - 1; i >= 0; i--) {
-		struct pattern *p = pattern_list[i];
-		unsigned int flags = p->flags;
-		const char *gitignore_dir = p->pattern + p->patternlen + 1;
-		bool ignored;
-
-		if ((flags & PATTERN_FLAG_MUSTBEDIR) && !is_dir)
-			continue;
-
-		if (flags & PATTERN_FLAG_NODIR) {
-			if (!match_basename(path + dirlen + 1,
-					    pathlen - dirlen - 1,
-					    p->pattern,
-					    p->nowildcardlen,
-					    p->patternlen,
-					    p->flags))
-				continue;
-		} else {
-			if (!match_pathname(path, pathlen,
-					    gitignore_dir, p->dirlen,
-					    p->pattern,
-					    p->nowildcardlen,
-					    p->patternlen))
-				continue;
-		}
-
-		debug("%s: matches %s%s%s (%s/.gitignore)\n", path,
-		      flags & PATTERN_FLAG_NEGATIVE ? "!" : "", p->pattern,
-		      flags & PATTERN_FLAG_MUSTBEDIR ? "/" : "",
-		      gitignore_dir);
-
-		ignored = (flags & PATTERN_FLAG_NEGATIVE) == 0;
-		if (ignored)
-			debug("Ignore: %s\n", path);
-
-		return ignored;
-	}
-
-	debug("%s: no match\n", path);
-
-	return false;
-}
-
-static void add_pattern(const char *string, const char *dir, int dirlen)
-{
-	struct pattern *p;
-	int patternlen, nowildcardlen;
-	unsigned int flags;
-
-	parse_path_pattern(&string, &patternlen, &flags, &nowildcardlen);
-
-	if (patternlen == 0)
-		return;
-
-	p = xmalloc(sizeof(*p) + patternlen + dirlen + 2);
-
-	memcpy(p->pattern, string, patternlen);
-	p->pattern[patternlen] = 0;
-	memcpy(p->pattern + patternlen + 1, dir, dirlen);
-	p->pattern[patternlen + 1 + dirlen] = 0;
-
-	p->patternlen = patternlen;
-	p->nowildcardlen = nowildcardlen;
-	p->dirlen = dirlen;
-	p->flags = flags;
-
-	debug("Add pattern: %s%s%s\n",
-	      flags & PATTERN_FLAG_NEGATIVE ? "!" : "", p->pattern,
-	      flags & PATTERN_FLAG_MUSTBEDIR ? "/" : "");
-
-	if (nr_patterns >= alloced_patterns) {
-		alloced_patterns += 128;
-		pattern_list = xrealloc(pattern_list,
-					sizeof(*pattern_list) * alloced_patterns);
-	}
-
-	pattern_list[nr_patterns++] = p;
-}
-
-// similar to add_patterns_from_buffer() in GIT
-static void add_patterns_from_gitignore(const char *dir, int dirlen)
-{
-	struct stat st;
-	char path[PATH_MAX], *buf, *entry;
-	size_t size;
-	int fd, pathlen, i;
-
-	pathlen = snprintf(path, sizeof(path), "%s/.gitignore", dir);
-	if (pathlen >= sizeof(path))
-		error_exit("%s: too long path was truncated\n", path);
-
-	fd = open(path, O_RDONLY | O_NOFOLLOW);
-	if (fd < 0) {
-		if (errno != ENOENT)
-			return perror_exit(path);
-		return;
-	}
-
-	if (fstat(fd, &st) < 0)
-		perror_exit(path);
-
-	size = st.st_size;
-
-	buf = xmalloc(size + 1);
-	if (read(fd, buf, st.st_size) != st.st_size)
-		perror_exit(path);
-
-	buf[st.st_size] = '\n';
-	if (close(fd))
-		perror_exit(path);
-
-	debug("Parse %s\n", path);
-
-	entry = buf;
-
-	// skip utf8 bom
-	if (!strncmp(entry, utf8_bom, strlen(utf8_bom)))
-		entry += strlen(utf8_bom);
-
-	for (i = entry - buf; i < size; i++) {
-		if (buf[i] == '\n') {
-			if (entry != buf + i && entry[0] != '#') {
-				buf[i - (i && buf[i-1] == '\r')] = 0;
-				trim_trailing_spaces(entry);
-				add_pattern(entry, dir, dirlen);
-			}
-			entry = buf + i + 1;
-		}
-	}
-
-	free(buf);
-}
-
-// Save the current number of patterns and increment the depth
-static void increment_depth(void)
-{
-	if (depth >= max_depth) {
-		max_depth += 1;
-		nr_patterns_at = xrealloc(nr_patterns_at,
-					  sizeof(*nr_patterns_at) * max_depth);
-	}
-
-	nr_patterns_at[depth] = nr_patterns;
-	depth++;
-}
-
-// Decrement the depth, and free up the patterns of this directory level.
-static void decrement_depth(void)
-{
-	depth--;
-	assert(depth >= 0);
-
-	while (nr_patterns > nr_patterns_at[depth])
-		free(pattern_list[--nr_patterns]);
-}
-
-static void print_path(const char *path)
-{
-	// The path always starts with "./"
-	assert(strlen(path) >= 2);
-
-	// Replace the root directory with a preferred prefix.
-	// This is useful for the tar command.
-	fprintf(out_fp, "%s%s\n", prefix, path + 2);
-}
-
-static void print_stat(const char *path, struct stat *st)
-{
-	if (!stat_fp)
-		return;
-
-	if (!S_ISREG(st->st_mode) && !S_ISLNK(st->st_mode))
-		return;
-
-	assert(strlen(path) >= 2);
-
-	fprintf(stat_fp, "%c %9ld %10ld %s\n",
-		S_ISLNK(st->st_mode) ? 'l' : '-',
-		st->st_size, st->st_mtim.tv_sec, path + 2);
-}
-
-// Traverse the entire directory tree, parsing .gitignore files.
-// Print file paths that are not tracked by git.
-//
-// Return true if all files under the directory are ignored, false otherwise.
-static bool traverse_directory(const char *dir, int dirlen)
-{
-	bool all_ignored = true;
-	DIR *dirp;
-
-	debug("Enter[%d]: %s\n", depth, dir);
-	increment_depth();
-
-	add_patterns_from_gitignore(dir, dirlen);
-
-	dirp = opendir(dir);
-	if (!dirp)
-		perror_exit(dir);
-
-	while (1) {
-		struct dirent *d;
-		struct stat st;
-		char path[PATH_MAX];
-		int pathlen;
-		bool ignored;
-
-		errno = 0;
-		d = readdir(dirp);
-		if (!d) {
-			if (errno)
-				perror_exit(dir);
-			break;
-		}
-
-		if (!strcmp(d->d_name, "..") || !strcmp(d->d_name, "."))
-			continue;
-
-		pathlen = snprintf(path, sizeof(path), "%s/%s", dir, d->d_name);
-		if (pathlen >= sizeof(path))
-			error_exit("%s: too long path was truncated\n", path);
-
-		if (lstat(path, &st) < 0)
-			perror_exit(path);
-
-		if ((!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode)) ||
-		    is_ignored(path, pathlen, dirlen, S_ISDIR(st.st_mode))) {
-			ignored = true;
-		} else {
-			if (S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode))
-				// If all the files in a directory are ignored,
-				// let's ignore that directory as well. This
-				// will avoid empty directories in the tarball.
-				ignored = traverse_directory(path, pathlen);
-			else
-				ignored = false;
-		}
-
-		if (ignored) {
-			print_path(path);
-		} else {
-			print_stat(path, &st);
-			all_ignored = false;
-		}
-	}
-
-	if (closedir(dirp))
-		perror_exit(dir);
-
-	decrement_depth();
-	debug("Leave[%d]: %s\n", depth, dir);
-
-	return all_ignored;
-}
-
-static void usage(void)
-{
-	fprintf(stderr,
-		"usage: %s [options]\n"
-		"\n"
-		"Show files that are ignored by git\n"
-		"\n"
-		"options:\n"
-		"  -d, --debug                  print debug messages to stderr\n"
-		"  -e, --exclude PATTERN        add the given exclude pattern\n"
-		"  -h, --help                   show this help message and exit\n"
-		"  -i, --ignore-case            Ignore case differences between the patterns and the files\n"
-		"  -o, --output FILE            output the ignored files to a file (default: '-', i.e. stdout)\n"
-		"  -p, --prefix PREFIX          prefix added to each path (default: empty string)\n"
-		"  -r, --rootdir DIR            root of the source tree (default: current working directory)\n"
-		"  -s, --stat FILE              output the file stat of non-ignored files to a file\n",
-		progname);
-}
-
-static void open_output(const char *pathname, FILE **fp)
-{
-	if (strcmp(pathname, "-")) {
-		*fp = fopen(pathname, "w");
-		if (!*fp)
-			perror_exit(pathname);
-	} else {
-		*fp = stdout;
-	}
-}
-
-static void close_output(const char *pathname, FILE *fp)
-{
-	fflush(fp);
-
-	if (ferror(fp))
-		error_exit("not all data was written to the output\n");
-
-	if (fclose(fp))
-		perror_exit(pathname);
-}
-
-int main(int argc, char *argv[])
-{
-	const char *output = "-";
-	const char *rootdir = ".";
-	const char *stat = NULL;
-
-	progname = strrchr(argv[0], '/');
-	if (progname)
-		progname++;
-	else
-		progname = argv[0];
-
-	while (1) {
-		static struct option long_options[] = {
-			{"debug",       no_argument,       NULL, 'd'},
-			{"help",        no_argument,       NULL, 'h'},
-			{"ignore-case", no_argument,       NULL, 'i'},
-			{"output",      required_argument, NULL, 'o'},
-			{"prefix",      required_argument, NULL, 'p'},
-			{"rootdir",     required_argument, NULL, 'r'},
-			{"stat",        required_argument, NULL, 's'},
-			{"exclude",     required_argument, NULL, 'x'},
-			{},
-		};
-
-		int c = getopt_long(argc, argv, "dhino:p:r:s:x:", long_options, NULL);
-
-		if (c == -1)
-			break;
-
-		switch (c) {
-		case 'd':
-			debug_on = true;
-			break;
-		case 'h':
-			usage();
-			exit(0);
-		case 'i':
-			ignore_case = true;
-			break;
-		case 'o':
-			output = optarg;
-			break;
-		case 'p':
-			prefix = optarg;
-			break;
-		case 'r':
-			rootdir = optarg;
-			break;
-		case 's':
-			stat = optarg;
-			break;
-		case 'x':
-			add_pattern(optarg, ".", strlen("."));
-			break;
-		case '?':
-			usage();
-			/* fallthrough */
-		default:
-			exit(EXIT_FAILURE);
-		}
-	}
-
-	open_output(output, &out_fp);
-	if (stat && stat[0])
-		open_output(stat, &stat_fp);
-
-	if (chdir(rootdir))
-		perror_exit(rootdir);
-
-	add_pattern(".git/", ".", strlen("."));
-
-	if (traverse_directory(".", strlen(".")))
-		print_path("./");
-
-	assert(depth == 0);
-
-	while (nr_patterns > 0)
-		free(pattern_list[--nr_patterns]);
-	free(pattern_list);
-	free(nr_patterns_at);
-
-	close_output(output, out_fp);
-	if (stat_fp)
-		close_output(stat, stat_fp);
-
-	return 0;
-}
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index ff5e7d8e380b..c5ae57167d7c 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -51,7 +51,116 @@ create_package() {
 	dpkg-deb $dpkg_deb_opts ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..
 }
 
-deploy_kernel_headers () {
+install_linux_image () {
+	pdir=$1
+	pname=$2
+
+	rm -rf ${pdir}
+
+	# Only some architectures with OF support have this target
+	if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
+		${MAKE} -f ${srctree}/Makefile INSTALL_DTBS_PATH="${pdir}/usr/lib/linux-image-${KERNELRELEASE}" dtbs_install
+	fi
+
+	if is_enabled CONFIG_MODULES; then
+		${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" modules_install
+		rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build"
+		rm -f "${pdir}/lib/modules/${KERNELRELEASE}/source"
+		if [ "${SRCARCH}" = um ] ; then
+			mkdir -p "${pdir}/usr/lib/uml/modules"
+			mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"
+		fi
+	fi
+
+	# Install the kernel
+	if [ "${ARCH}" = um ] ; then
+		mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"
+		cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"
+		cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"
+		gzip "${pdir}/usr/share/doc/${pname}/config"
+	else
+		mkdir -p "${pdir}/boot"
+		cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"
+		cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"
+	fi
+
+	# Not all arches have the same installed path in debian
+	# XXX: have each arch Makefile export a variable of the canonical image install
+	# path instead
+	case "${SRCARCH}" in
+	um)
+		installed_image_path="usr/bin/linux-${KERNELRELEASE}";;
+	parisc|mips|powerpc)
+		installed_image_path="boot/vmlinux-${KERNELRELEASE}";;
+	*)
+		installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;
+	esac
+	cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}"
+
+	# Install the maintainer scripts
+	# Note: hook scripts under /etc/kernel are also executed by official Debian
+	# kernel packages, as well as kernel packages built using make-kpkg.
+	# make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
+	# so do we; recent versions of dracut and initramfs-tools will obey this.
+	debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
+	for script in postinst postrm preinst prerm; do
+		mkdir -p "${pdir}${debhookdir}/${script}.d"
+
+		mkdir -p "${pdir}/DEBIAN"
+		cat <<-EOF > "${pdir}/DEBIAN/${script}"
+
+		#!/bin/sh
+
+		set -e
+
+		# Pass maintainer script parameters to hook scripts
+		export DEB_MAINT_PARAMS="\$*"
+
+		# Tell initramfs builder whether it's wanted
+		export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
+
+		test -d ${debhookdir}/${script}.d && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" ${debhookdir}/${script}.d
+		exit 0
+		EOF
+		chmod 755 "${pdir}/DEBIAN/${script}"
+	done
+}
+
+install_linux_image_dbg () {
+	pdir=$1
+	image_pdir=$2
+
+	rm -rf ${pdir}
+
+	for module in $(find ${image_pdir}/lib/modules/ -name *.ko -printf '%P\n'); do
+		module=lib/modules/${module}
+		mkdir -p $(dirname ${pdir}/usr/lib/debug/${module})
+		# only keep debug symbols in the debug file
+		${OBJCOPY} --only-keep-debug ${image_pdir}/${module} ${pdir}/usr/lib/debug/${module}
+		# strip original module from debug symbols
+		${OBJCOPY} --strip-debug ${image_pdir}/${module}
+		# then add a link to those
+		${OBJCOPY} --add-gnu-debuglink=${pdir}/usr/lib/debug/${module} ${image_pdir}/${module}
+	done
+
+	# re-sign stripped modules
+	if is_enabled CONFIG_MODULE_SIG_ALL; then
+		${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${image_pdir}" modules_sign
+	fi
+
+	# Build debug package
+	# Different tools want the image in different locations
+	# perf
+	mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
+	cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
+	# systemtap
+	mkdir -p ${pdir}/usr/lib/debug/boot/
+	ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}
+	# kdump-tools
+	ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
+}
+
+install_kernel_headers () {
 	pdir=$1
 
 	rm -rf $pdir
@@ -89,7 +198,7 @@ deploy_kernel_headers () {
 	ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 }
 
-deploy_libc_headers () {
+install_libc_headers () {
 	pdir=$1
 
 	rm -rf $pdir
@@ -104,132 +213,38 @@ deploy_libc_headers () {
 	mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 }
 
-version=$KERNELRELEASE
-tmpdir=debian/linux-image
-dbg_dir=debian/linux-image-dbg
-packagename=linux-image-$version
-dbg_packagename=$packagename-dbg
-
-if [ "$ARCH" = "um" ] ; then
-	packagename=user-mode-linux-$version
-fi
-
-# Not all arches have the same installed path in debian
-# XXX: have each arch Makefile export a variable of the canonical image install
-# path instead
-case $ARCH in
-um)
-	installed_image_path="usr/bin/linux-$version"
-	;;
-parisc|mips|powerpc)
-	installed_image_path="boot/vmlinux-$version"
-	;;
-*)
-	installed_image_path="boot/vmlinuz-$version"
-esac
-
-BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes)
-
-# Setup the directory structure
-rm -rf "$tmpdir" "$dbg_dir" debian/files
-mkdir -m 755 -p "$tmpdir/DEBIAN"
-mkdir -p "$tmpdir/lib" "$tmpdir/boot"
-
-# Install the kernel
-if [ "$ARCH" = "um" ] ; then
-	mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
-	cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
-	cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
-	gzip "$tmpdir/usr/share/doc/$packagename/config"
-else
-	cp System.map "$tmpdir/boot/System.map-$version"
-	cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
-fi
-cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path"
-
-if is_enabled CONFIG_OF_EARLY_FLATTREE; then
-	# Only some architectures with OF support have this target
-	if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then
-		$MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
-	fi
-fi
-
-if is_enabled CONFIG_MODULES; then
-	INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_install
-	rm -f "$tmpdir/lib/modules/$version/build"
-	rm -f "$tmpdir/lib/modules/$version/source"
-	if [ "$ARCH" = "um" ] ; then
-		mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
-		rmdir "$tmpdir/lib/modules/$version"
-	fi
-	if [ -n "$BUILD_DEBUG" ] ; then
-		for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
-			module=lib/modules/$module
-			mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
-			# only keep debug symbols in the debug file
-			$OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
-			# strip original module from debug symbols
-			$OBJCOPY --strip-debug $tmpdir/$module
-			# then add a link to those
-			$OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
-		done
-
-		# resign stripped modules
-		if is_enabled CONFIG_MODULE_SIG_ALL; then
-			INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_sign
-		fi
-	fi
-fi
-
-# Install the maintainer scripts
-# Note: hook scripts under /etc/kernel are also executed by official Debian
-# kernel packages, as well as kernel packages built using make-kpkg.
-# make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
-# so do we; recent versions of dracut and initramfs-tools will obey this.
-debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
-for script in postinst postrm preinst prerm ; do
-	mkdir -p "$tmpdir$debhookdir/$script.d"
-	cat <<EOF > "$tmpdir/DEBIAN/$script"
-#!/bin/sh
-
-set -e
-
-# Pass maintainer script parameters to hook scripts
-export DEB_MAINT_PARAMS="\$*"
-
-# Tell initramfs builder whether it's wanted
-export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
-
-test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
-exit 0
-EOF
-	chmod 755 "$tmpdir/DEBIAN/$script"
+rm -f debian/files
+
+packages_enabled=$(dh_listpackages)
+
+for package in ${packages_enabled}
+do
+	case ${package} in
+	*-dbg)
+		# This must be done after linux-image, that is, we expect the
+		# debug package appears after linux-image in debian/control.
+		install_linux_image_dbg debian/linux-image-dbg debian/linux-image;;
+	linux-image-*|user-mode-linux-*)
+		install_linux_image debian/linux-image ${package};;
+	linux-libc-dev)
+		install_libc_headers debian/linux-libc-dev;;
+	linux-headers-*)
+		install_kernel_headers debian/linux-headers;;
+	esac
 done
 
-if [ "$ARCH" != "um" ]; then
-	if is_enabled CONFIG_MODULES; then
-		deploy_kernel_headers debian/linux-headers
-		create_package linux-headers-$version debian/linux-headers
-	fi
-
-	deploy_libc_headers debian/linux-libc-dev
-	create_package linux-libc-dev debian/linux-libc-dev
-fi
-
-create_package "$packagename" "$tmpdir"
-
-if [ -n "$BUILD_DEBUG" ] ; then
-	# Build debug package
-	# Different tools want the image in different locations
-	# perf
-	mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
-	cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
-	# systemtap
-	mkdir -p $dbg_dir/usr/lib/debug/boot/
-	ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
-	# kdump-tools
-	ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
-	create_package "$dbg_packagename" "$dbg_dir"
-fi
+for package in ${packages_enabled}
+do
+	case ${package} in
+	*-dbg)
+		create_package ${package} debian/linux-image-dbg;;
+	linux-image-*|user-mode-linux-*)
+		create_package ${package} debian/linux-image;;
+	linux-libc-dev)
+		create_package ${package} debian/linux-libc-dev;;
+	linux-headers-*)
+		create_package ${package} debian/linux-headers;;
+	esac
+done
 
 exit 0
diff --git a/scripts/package/deb-build-option b/scripts/package/deb-build-option
index b079b0d121d4..7950eff01781 100755
--- a/scripts/package/deb-build-option
+++ b/scripts/package/deb-build-option
@@ -1,16 +1,14 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0-only
 
-# Set up CROSS_COMPILE if we are cross-compiling, but not called from the
-# kernel toplevel Makefile
-if [ -z "${CROSS_COMPILE}${cross_compiling}" -a "${DEB_HOST_ARCH}" != "${DEB_BUILD_ARCH}" ]; then
+# Set up CROSS_COMPILE if not defined yet
+if [ "${CROSS_COMPILE+set}" != "set" -a "${DEB_HOST_ARCH}" != "${DEB_BUILD_ARCH}" ]; then
 	echo CROSS_COMPILE=${DEB_HOST_GNU_TYPE}-
 fi
 
 version=$(dpkg-parsechangelog -S Version)
-version_upstream="${version%-*}"
-debian_revision="${version#${version_upstream}}"
-debian_revision="${debian_revision#*-}"
+debian_revision="${version##*-}"
 
-echo KERNELRELEASE=${version_upstream}
-echo KBUILD_BUILD_VERSION=${debian_revision}
+if [ "${version}" != "${debian_revision}" ]; then
+	echo KBUILD_BUILD_VERSION=${debian_revision}
+fi
diff --git a/scripts/package/gen-diff-patch b/scripts/package/gen-diff-patch
new file mode 100755
index 000000000000..f842ab50a780
--- /dev/null
+++ b/scripts/package/gen-diff-patch
@@ -0,0 +1,44 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+diff_patch="${1}"
+untracked_patch="${2}"
+srctree=$(dirname $0)/../..
+
+rm -f ${diff_patch} ${untracked_patch}
+
+if ! ${srctree}/scripts/check-git; then
+	exit
+fi
+
+mkdir -p "$(dirname ${diff_patch})" "$(dirname ${untracked_patch})"
+
+git -C "${srctree}" diff HEAD > "${diff_patch}"
+
+if [ ! -s "${diff_patch}" ]; then
+	rm -f "${diff_patch}"
+	exit
+fi
+
+git -C ${srctree} status --porcelain --untracked-files=all |
+while read stat path
+do
+	if [ "${stat}" = '??' ]; then
+
+		if ! diff -u /dev/null "${srctree}/${path}" > .tmp_diff &&
+			! head -n1 .tmp_diff | grep -q "Binary files"; then
+			{
+				echo "--- /dev/null"
+				echo "+++ linux/$path"
+				cat .tmp_diff | tail -n +3
+			} >> ${untracked_patch}
+		fi
+	fi
+done
+
+rm -f .tmp_diff
+
+if [ ! -s "${diff_patch}" ]; then
+	rm -f "${diff_patch}"
+	exit
+fi
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index f74380036bb5..e20a2b5be9eb 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -91,7 +91,7 @@ version=$KERNELRELEASE
 if [ -n "$KDEB_PKGVERSION" ]; then
 	packageversion=$KDEB_PKGVERSION
 else
-	packageversion=$version-$($srctree/init/build-version)
+	packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/init/build-version)
 fi
 sourcename=${KDEB_SOURCENAME:-linux-upstream}
 
@@ -152,6 +152,14 @@ mkdir -p debian/patches
 } > debian/patches/config
 echo config > debian/patches/series
 
+$(dirname $0)/gen-diff-patch debian/patches/diff.patch debian/patches/untracked.patch
+if [ -f debian/patches/diff.patch ]; then
+	echo diff.patch >> debian/patches/series
+fi
+if [ -f debian/patches/untracked.patch ]; then
+	echo untracked.patch >> debian/patches/series
+fi
+
 echo $debarch > debian/arch
 extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
 extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
@@ -192,7 +200,7 @@ Section: kernel
 Priority: optional
 Maintainer: $maintainer
 Rules-Requires-Root: no
-Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends
+Build-Depends: bc, debhelper, rsync, kmod, cpio, bison, flex $extra_build_depends
 Homepage: https://www.kernel.org/
 
 Package: $packagename-$version
@@ -200,6 +208,10 @@ Architecture: $debarch
 Description: Linux kernel, version $version
  This package contains the Linux kernel, modules and corresponding other
  files, version: $version.
+EOF
+
+if [ "${SRCARCH}" != um ]; then
+cat <<EOF >> debian/control
 
 Package: linux-libc-dev
 Section: devel
@@ -222,6 +234,7 @@ Description: Linux kernel headers for $version on $debarch
  This is useful for people who need to build external modules
 EOF
 fi
+fi
 
 if is_enabled CONFIG_DEBUG_INFO; then
 cat <<EOF >> debian/control
@@ -239,10 +252,12 @@ cat <<EOF > debian/rules
 #!$(command -v $MAKE) -f
 
 srctree ?= .
+KERNELRELEASE = ${KERNELRELEASE}
 
 build-indep:
 build-arch:
 	\$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \
+	KERNELRELEASE=\$(KERNELRELEASE) \
 	\$(shell \$(srctree)/scripts/package/deb-build-option) \
 	olddefconfig all
 
@@ -250,7 +265,9 @@ build: build-arch
 
 binary-indep:
 binary-arch: build-arch
-	\$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} intdeb-pkg
+	\$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \
+	KERNELRELEASE=\$(KERNELRELEASE) intdeb-pkg
+
 clean:
 	rm -rf debian/files debian/linux-*
 	\$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} clean
diff --git a/scripts/package/mkspec b/scripts/package/mkspec
index 3c550960dd39..b7d1dc28a5d6 100755
--- a/scripts/package/mkspec
+++ b/scripts/package/mkspec
@@ -15,15 +15,21 @@ if [ "$1" = prebuilt ]; then
 	MAKE="$MAKE -f $srctree/Makefile"
 else
 	S=
+
+	mkdir -p rpmbuild/SOURCES
+	cp linux.tar.gz rpmbuild/SOURCES
+	cp "${KCONFIG_CONFIG}" rpmbuild/SOURCES/config
+	$(dirname $0)/gen-diff-patch rpmbuild/SOURCES/diff.patch rpmbuild/SOURCES/untracked.patch
+	touch rpmbuild/SOURCES/diff.patch rpmbuild/SOURCES/untracked.patch
 fi
 
-if grep -q CONFIG_MODULES=y .config; then
+if grep -q CONFIG_MODULES=y include/config/auto.conf; then
 	M=
 else
 	M=DEL
 fi
 
-if grep -q CONFIG_DRM=y .config; then
+if grep -q CONFIG_DRM=y include/config/auto.conf; then
 	PROVIDES=kernel-drm
 fi
 
@@ -48,7 +54,9 @@ sed -e '/^DEL/d' -e 's/^\t*//' <<EOF
 	Vendor: The Linux Community
 	URL: https://www.kernel.org
 $S	Source0: linux.tar.gz
-$S	Source1: .config
+$S	Source1: config
+$S	Source2: diff.patch
+$S	Source3: untracked.patch
 	Provides: $PROVIDES
 $S	BuildRequires: bc binutils bison dwarves
 $S	BuildRequires: (elfutils-libelf-devel or libelf-devel) flex
@@ -85,7 +93,13 @@ $S$M	against the $__KERNELRELEASE kernel package.
 $S$M
 $S	%prep
 $S	%setup -q -n linux
-$S	cp %{SOURCE1} .
+$S	cp %{SOURCE1} .config
+$S	if [ -s %{SOURCE2} ]; then
+$S		patch -p1 < %{SOURCE2}
+$S	fi
+$S	if [ -s %{SOURCE3} ]; then
+$S		patch -p1 < %{SOURCE3}
+$S	fi
 $S
 $S	%build
 $S	$MAKE %{?_smp_mflags} KERNELRELEASE=$KERNELRELEASE KBUILD_BUILD_VERSION=%{release}
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index e54839a42d4b..3d3babac8298 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -11,10 +11,16 @@
 #
 
 usage() {
-	echo "Usage: $0 [srctree]" >&2
+	echo "Usage: $0 [--no-local] [srctree]" >&2
 	exit 1
 }
 
+no_local=false
+if test "$1" = "--no-local"; then
+	no_local=true
+	shift
+fi
+
 srctree=.
 if test $# -gt 0; then
 	srctree=$1
@@ -26,14 +32,22 @@ fi
 
 scm_version()
 {
-	local short
+	local short=false
+	local no_dirty=false
 	local tag
-	short=false
+
+	while [ $# -gt 0 ];
+	do
+		case "$1" in
+		--short)
+			short=true;;
+		--no-dirty)
+			no_dirty=true;;
+		esac
+		shift
+	done
 
 	cd "$srctree"
-	if test "$1" = "--short"; then
-		short=true
-	fi
 
 	if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
 		return
@@ -75,6 +89,10 @@ scm_version()
 		printf '%s%s' -g "$(echo $head | cut -c1-12)"
 	fi
 
+	if ${no_dirty}; then
+		return
+	fi
+
 	# Check for uncommitted changes.
 	# This script must avoid any write attempt to the source tree, which
 	# might be read-only.
@@ -110,11 +128,6 @@ collect_files()
 	echo "$res"
 }
 
-if ! test -e include/config/auto.conf; then
-	echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
-	exit 1
-fi
-
 if [ -z "${KERNELVERSION}" ]; then
 	echo "KERNELVERSION is not set" >&2
 	exit 1
@@ -126,6 +139,16 @@ if test ! "$srctree" -ef .; then
 	file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
 fi
 
+if ${no_local}; then
+	echo "${KERNELVERSION}$(scm_version --no-dirty)"
+	exit 0
+fi
+
+if ! test -e include/config/auto.conf; then
+	echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
+	exit 1
+fi
+
 # version string from CONFIG_LOCALVERSION
 config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)