diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 8436b01..3cebfa0 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -73,7 +73,7 @@ installmandocs: mandocs
 ###
 #External programs used
 KERNELDOC = $(srctree)/scripts/kernel-doc
-DOCPROC   = $(objtree)/scripts/basic/docproc
+DOCPROC   = $(objtree)/scripts/docproc
 
 XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
 XMLTOFLAGS += --skip-validation
diff --git a/Makefile b/Makefile
index d342502..bc9eae4 100644
--- a/Makefile
+++ b/Makefile
@@ -1313,6 +1313,7 @@ $(help-board-dirs): help-%:
 # Documentation targets
 # ---------------------------------------------------------------------------
 %docs: scripts_basic FORCE
+	$(Q)$(MAKE) $(build)=scripts build_docproc
 	$(Q)$(MAKE) $(build)=Documentation/DocBook $@
 
 else # KBUILD_EXTMOD
diff --git a/scripts/.gitignore b/scripts/.gitignore
index e2741d2..105b21f 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -8,3 +8,4 @@ bin2c
 unifdef
 ihex2fw
 recordmcount
+docproc
diff --git a/scripts/Makefile b/scripts/Makefile
index fcea261..df7678f 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -6,6 +6,7 @@
 # pnmttologo:    Convert pnm files to logo files
 # conmakehash:   Create chartable
 # conmakehash:	 Create arrays for initializing the kernel console tables
+# docproc:       Used in Documentation/DocBook
 
 hostprogs-$(CONFIG_KALLSYMS)     += kallsyms
 hostprogs-$(CONFIG_LOGO)         += pnmtologo
@@ -16,12 +17,14 @@ hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount
 always		:= $(hostprogs-y) $(hostprogs-m)
 
 # The following hostprogs-y programs are only build on demand
-hostprogs-y += unifdef
+hostprogs-y += unifdef docproc
 
-# This target is used internally to avoid "is up to date" messages
+# These targets are used internally to avoid "is up to date" messages
 PHONY += build_unifdef
 build_unifdef: scripts/unifdef FORCE
 	@:
+build_docproc: scripts/docproc FORCE
+	@:
 
 subdir-$(CONFIG_MODVERSIONS) += genksyms
 subdir-y                     += mod
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore
index bf8b199..a776371 100644
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@@ -1,3 +1 @@
-hash
 fixdep
-docproc
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index 4c324a1..4fcef87 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -7,9 +7,8 @@
 # .config is included by main Makefile.
 # ---------------------------------------------------------------------------
 # fixdep: 	 Used to generate dependency information during build process
-# docproc:	 Used in Documentation/DocBook
 
-hostprogs-y	:= fixdep docproc
+hostprogs-y	:= fixdep
 always		:= $(hostprogs-y)
 
 # fixdep is needed to compile other host programs
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
deleted file mode 100644
index 98dec87..0000000
--- a/scripts/basic/docproc.c
+++ /dev/null
@@ -1,583 +0,0 @@
-/*
- *	docproc is a simple preprocessor for the template files
- *      used as placeholders for the kernel internal documentation.
- *	docproc is used for documentation-frontend and
- *      dependency-generator.
- *	The two usages have in common that they require
- *	some knowledge of the .tmpl syntax, therefore they
- *	are kept together.
- *
- *	documentation-frontend
- *		Scans the template file and call kernel-doc for
- *		all occurrences of ![EIF]file
- *		Beforehand each referenced file is scanned for
- *		any symbols that are exported via these macros:
- *			EXPORT_SYMBOL(), EXPORT_SYMBOL_GPL(), &
- *			EXPORT_SYMBOL_GPL_FUTURE()
- *		This is used to create proper -function and
- *		-nofunction arguments in calls to kernel-doc.
- *		Usage: docproc doc file.tmpl
- *
- *	dependency-generator:
- *		Scans the template file and list all files
- *		referenced in a format recognized by make.
- *		Usage:	docproc depend file.tmpl
- *		Writes dependency information to stdout
- *		in the following format:
- *		file.tmpl src.c	src2.c
- *		The filenames are obtained from the following constructs:
- *		!Efilename
- *		!Ifilename
- *		!Dfilename
- *		!Ffilename
- *		!Pfilename
- *
- */
-
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <limits.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-
-/* exitstatus is used to keep track of any failing calls to kernel-doc,
- * but execution continues. */
-int exitstatus = 0;
-
-typedef void DFL(char *);
-DFL *defaultline;
-
-typedef void FILEONLY(char * file);
-FILEONLY *internalfunctions;
-FILEONLY *externalfunctions;
-FILEONLY *symbolsonly;
-FILEONLY *findall;
-
-typedef void FILELINE(char * file, char * line);
-FILELINE * singlefunctions;
-FILELINE * entity_system;
-FILELINE * docsection;
-
-#define MAXLINESZ     2048
-#define MAXFILES      250
-#define KERNELDOCPATH "scripts/"
-#define KERNELDOC     "kernel-doc"
-#define DOCBOOK       "-docbook"
-#define LIST          "-list"
-#define FUNCTION      "-function"
-#define NOFUNCTION    "-nofunction"
-#define NODOCSECTIONS "-no-doc-sections"
-
-static char *srctree, *kernsrctree;
-
-static char **all_list = NULL;
-static int all_list_len = 0;
-
-static void consume_symbol(const char *sym)
-{
-	int i;
-
-	for (i = 0; i < all_list_len; i++) {
-		if (!all_list[i])
-			continue;
-		if (strcmp(sym, all_list[i]))
-			continue;
-		all_list[i] = NULL;
-		break;
-	}
-}
-
-static void usage (void)
-{
-	fprintf(stderr, "Usage: docproc {doc|depend} file\n");
-	fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
-	fprintf(stderr, "doc: frontend when generating kernel documentation\n");
-	fprintf(stderr, "depend: generate list of files referenced within file\n");
-	fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
-	fprintf(stderr, "                     KBUILD_SRC: absolute path to kernel source tree.\n");
-}
-
-/*
- * Execute kernel-doc with parameters given in svec
- */
-static void exec_kernel_doc(char **svec)
-{
-	pid_t pid;
-	int ret;
-	char real_filename[PATH_MAX + 1];
-	/* Make sure output generated so far are flushed */
-	fflush(stdout);
-	switch (pid=fork()) {
-		case -1:
-			perror("fork");
-			exit(1);
-		case  0:
-			memset(real_filename, 0, sizeof(real_filename));
-			strncat(real_filename, kernsrctree, PATH_MAX);
-			strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
-					PATH_MAX - strlen(real_filename));
-			execvp(real_filename, svec);
-			fprintf(stderr, "exec ");
-			perror(real_filename);
-			exit(1);
-		default:
-			waitpid(pid, &ret ,0);
-	}
-	if (WIFEXITED(ret))
-		exitstatus |= WEXITSTATUS(ret);
-	else
-		exitstatus = 0xff;
-}
-
-/* Types used to create list of all exported symbols in a number of files */
-struct symbols
-{
-	char *name;
-};
-
-struct symfile
-{
-	char *filename;
-	struct symbols *symbollist;
-	int symbolcnt;
-};
-
-struct symfile symfilelist[MAXFILES];
-int symfilecnt = 0;
-
-static void add_new_symbol(struct symfile *sym, char * symname)
-{
-	sym->symbollist =
-          realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *));
-	sym->symbollist[sym->symbolcnt++].name = strdup(symname);
-}
-
-/* Add a filename to the list */
-static struct symfile * add_new_file(char * filename)
-{
-	symfilelist[symfilecnt++].filename = strdup(filename);
-	return &symfilelist[symfilecnt - 1];
-}
-
-/* Check if file already are present in the list */
-static struct symfile * filename_exist(char * filename)
-{
-	int i;
-	for (i=0; i < symfilecnt; i++)
-		if (strcmp(symfilelist[i].filename, filename) == 0)
-			return &symfilelist[i];
-	return NULL;
-}
-
-/*
- * List all files referenced within the template file.
- * Files are separated by tabs.
- */
-static void adddep(char * file)		   { printf("\t%s", file); }
-static void adddep2(char * file, char * line)     { line = line; adddep(file); }
-static void noaction(char * line)		   { line = line; }
-static void noaction2(char * file, char * line)   { file = file; line = line; }
-
-/* Echo the line without further action */
-static void printline(char * line)               { printf("%s", line); }
-
-/*
- * Find all symbols in filename that are exported with EXPORT_SYMBOL &
- * EXPORT_SYMBOL_GPL (& EXPORT_SYMBOL_GPL_FUTURE implicitly).
- * All symbols located are stored in symfilelist.
- */
-static void find_export_symbols(char * filename)
-{
-	FILE * fp;
-	struct symfile *sym;
-	char line[MAXLINESZ];
-	if (filename_exist(filename) == NULL) {
-		char real_filename[PATH_MAX + 1];
-		memset(real_filename, 0, sizeof(real_filename));
-		strncat(real_filename, srctree, PATH_MAX);
-		strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
-		strncat(real_filename, filename,
-				PATH_MAX - strlen(real_filename));
-		sym = add_new_file(filename);
-		fp = fopen(real_filename, "r");
-		if (fp == NULL)
-		{
-			fprintf(stderr, "docproc: ");
-			perror(real_filename);
-			exit(1);
-		}
-		while (fgets(line, MAXLINESZ, fp)) {
-			char *p;
-			char *e;
-			if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != NULL) ||
-                            ((p = strstr(line, "EXPORT_SYMBOL")) != NULL)) {
-				/* Skip EXPORT_SYMBOL{_GPL} */
-				while (isalnum(*p) || *p == '_')
-					p++;
-				/* Remove parentheses & additional whitespace */
-				while (isspace(*p))
-					p++;
-				if (*p != '(')
-					continue; /* Syntax error? */
-				else
-					p++;
-				while (isspace(*p))
-					p++;
-				e = p;
-				while (isalnum(*e) || *e == '_')
-					e++;
-				*e = '\0';
-				add_new_symbol(sym, p);
-			}
-		}
-		fclose(fp);
-	}
-}
-
-/*
- * Document all external or internal functions in a file.
- * Call kernel-doc with following parameters:
- * kernel-doc -docbook -nofunction function_name1 filename
- * Function names are obtained from all the src files
- * by find_export_symbols.
- * intfunc uses -nofunction
- * extfunc uses -function
- */
-static void docfunctions(char * filename, char * type)
-{
-	int i,j;
-	int symcnt = 0;
-	int idx = 0;
-	char **vec;
-
-	for (i=0; i <= symfilecnt; i++)
-		symcnt += symfilelist[i].symbolcnt;
-	vec = malloc((2 + 2 * symcnt + 3) * sizeof(char *));
-	if (vec == NULL) {
-		perror("docproc: ");
-		exit(1);
-	}
-	vec[idx++] = KERNELDOC;
-	vec[idx++] = DOCBOOK;
-	vec[idx++] = NODOCSECTIONS;
-	for (i=0; i < symfilecnt; i++) {
-		struct symfile * sym = &symfilelist[i];
-		for (j=0; j < sym->symbolcnt; j++) {
-			vec[idx++]     = type;
-			consume_symbol(sym->symbollist[j].name);
-			vec[idx++] = sym->symbollist[j].name;
-		}
-	}
-	vec[idx++]     = filename;
-	vec[idx] = NULL;
-	printf("<!-- %s -->\n", filename);
-	exec_kernel_doc(vec);
-	fflush(stdout);
-	free(vec);
-}
-static void intfunc(char * filename) {	docfunctions(filename, NOFUNCTION); }
-static void extfunc(char * filename) { docfunctions(filename, FUNCTION);   }
-
-/*
- * Document specific function(s) in a file.
- * Call kernel-doc with the following parameters:
- * kernel-doc -docbook -function function1 [-function function2]
- */
-static void singfunc(char * filename, char * line)
-{
-	char *vec[200]; /* Enough for specific functions */
-        int i, idx = 0;
-        int startofsym = 1;
-	vec[idx++] = KERNELDOC;
-	vec[idx++] = DOCBOOK;
-
-        /* Split line up in individual parameters preceded by FUNCTION */
-        for (i=0; line[i]; i++) {
-                if (isspace(line[i])) {
-                        line[i] = '\0';
-                        startofsym = 1;
-                        continue;
-                }
-                if (startofsym) {
-                        startofsym = 0;
-                        vec[idx++] = FUNCTION;
-                        vec[idx++] = &line[i];
-                }
-        }
-	for (i = 0; i < idx; i++) {
-        	if (strcmp(vec[i], FUNCTION))
-        		continue;
-		consume_symbol(vec[i + 1]);
-	}
-	vec[idx++] = filename;
-	vec[idx] = NULL;
-	exec_kernel_doc(vec);
-}
-
-/*
- * Insert specific documentation section from a file.
- * Call kernel-doc with the following parameters:
- * kernel-doc -docbook -function "doc section" filename
- */
-static void docsect(char *filename, char *line)
-{
-	char *vec[6]; /* kerneldoc -docbook -function "section" file NULL */
-	char *s;
-
-	for (s = line; *s; s++)
-		if (*s == '\n')
-			*s = '\0';
-
-	if (asprintf(&s, "DOC: %s", line) < 0) {
-		perror("asprintf");
-		exit(1);
-	}
-	consume_symbol(s);
-	free(s);
-
-	vec[0] = KERNELDOC;
-	vec[1] = DOCBOOK;
-	vec[2] = FUNCTION;
-	vec[3] = line;
-	vec[4] = filename;
-	vec[5] = NULL;
-	exec_kernel_doc(vec);
-}
-
-static void find_all_symbols(char *filename)
-{
-	char *vec[4]; /* kerneldoc -list file NULL */
-	pid_t pid;
-	int ret, i, count, start;
-	char real_filename[PATH_MAX + 1];
-	int pipefd[2];
-	char *data, *str;
-	size_t data_len = 0;
-
-	vec[0] = KERNELDOC;
-	vec[1] = LIST;
-	vec[2] = filename;
-	vec[3] = NULL;
-
-	if (pipe(pipefd)) {
-		perror("pipe");
-		exit(1);
-	}
-
-	switch (pid=fork()) {
-		case -1:
-			perror("fork");
-			exit(1);
-		case  0:
-			close(pipefd[0]);
-			dup2(pipefd[1], 1);
-			memset(real_filename, 0, sizeof(real_filename));
-			strncat(real_filename, kernsrctree, PATH_MAX);
-			strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
-					PATH_MAX - strlen(real_filename));
-			execvp(real_filename, vec);
-			fprintf(stderr, "exec ");
-			perror(real_filename);
-			exit(1);
-		default:
-			close(pipefd[1]);
-			data = malloc(4096);
-			do {
-				while ((ret = read(pipefd[0],
-						   data + data_len,
-						   4096)) > 0) {
-					data_len += ret;
-					data = realloc(data, data_len + 4096);
-				}
-			} while (ret == -EAGAIN);
-			if (ret != 0) {
-				perror("read");
-				exit(1);
-			}
-			waitpid(pid, &ret ,0);
-	}
-	if (WIFEXITED(ret))
-		exitstatus |= WEXITSTATUS(ret);
-	else
-		exitstatus = 0xff;
-
-	count = 0;
-	/* poor man's strtok, but with counting */
-	for (i = 0; i < data_len; i++) {
-		if (data[i] == '\n') {
-			count++;
-			data[i] = '\0';
-		}
-	}
-	start = all_list_len;
-	all_list_len += count;
-	all_list = realloc(all_list, sizeof(char *) * all_list_len);
-	str = data;
-	for (i = 0; i < data_len && start != all_list_len; i++) {
-		if (data[i] == '\0') {
-			all_list[start] = str;
-			str = data + i + 1;
-			start++;
-		}
-	}
-}
-
-/*
- * Parse file, calling action specific functions for:
- * 1) Lines containing !E
- * 2) Lines containing !I
- * 3) Lines containing !D
- * 4) Lines containing !F
- * 5) Lines containing !P
- * 6) Lines containing !C
- * 7) Default lines - lines not matching the above
- */
-static void parse_file(FILE *infile)
-{
-	char line[MAXLINESZ];
-	char * s;
-	while (fgets(line, MAXLINESZ, infile)) {
-		if (line[0] == '!') {
-			s = line + 2;
-			switch (line[1]) {
-				case 'E':
-					while (*s && !isspace(*s)) s++;
-					*s = '\0';
-					externalfunctions(line+2);
-					break;
-				case 'I':
-					while (*s && !isspace(*s)) s++;
-					*s = '\0';
-					internalfunctions(line+2);
-					break;
-				case 'D':
-					while (*s && !isspace(*s)) s++;
-                                        *s = '\0';
-                                        symbolsonly(line+2);
-                                        break;
-				case 'F':
-					/* filename */
-					while (*s && !isspace(*s)) s++;
-					*s++ = '\0';
-                                        /* function names */
-					while (isspace(*s))
-						s++;
-					singlefunctions(line +2, s);
-					break;
-				case 'P':
-					/* filename */
-					while (*s && !isspace(*s)) s++;
-					*s++ = '\0';
-					/* DOC: section name */
-					while (isspace(*s))
-						s++;
-					docsection(line + 2, s);
-					break;
-				case 'C':
-					while (*s && !isspace(*s)) s++;
-					*s = '\0';
-					if (findall)
-						findall(line+2);
-					break;
-				default:
-					defaultline(line);
-			}
-		}
-		else {
-			defaultline(line);
-		}
-	}
-	fflush(stdout);
-}
-
-
-int main(int argc, char *argv[])
-{
-	FILE * infile;
-	int i;
-
-	srctree = getenv("SRCTREE");
-	if (!srctree)
-		srctree = getcwd(NULL, 0);
-	kernsrctree = getenv("KBUILD_SRC");
-	if (!kernsrctree || !*kernsrctree)
-		kernsrctree = srctree;
-	if (argc != 3) {
-		usage();
-		exit(1);
-	}
-	/* Open file, exit on error */
-	infile = fopen(argv[2], "r");
-        if (infile == NULL) {
-                fprintf(stderr, "docproc: ");
-                perror(argv[2]);
-                exit(2);
-        }
-
-	if (strcmp("doc", argv[1]) == 0)
-	{
-		/* Need to do this in two passes.
-		 * First pass is used to collect all symbols exported
-		 * in the various files;
-		 * Second pass generate the documentation.
-		 * This is required because some functions are declared
-		 * and exported in different files :-((
-		 */
-		/* Collect symbols */
-		defaultline       = noaction;
-		internalfunctions = find_export_symbols;
-		externalfunctions = find_export_symbols;
-		symbolsonly       = find_export_symbols;
-		singlefunctions   = noaction2;
-		docsection        = noaction2;
-		findall           = find_all_symbols;
-		parse_file(infile);
-
-		/* Rewind to start from beginning of file again */
-		fseek(infile, 0, SEEK_SET);
-		defaultline       = printline;
-		internalfunctions = intfunc;
-		externalfunctions = extfunc;
-		symbolsonly       = printline;
-		singlefunctions   = singfunc;
-		docsection        = docsect;
-		findall           = NULL;
-
-		parse_file(infile);
-
-		for (i = 0; i < all_list_len; i++) {
-			if (!all_list[i])
-				continue;
-			fprintf(stderr, "Warning: didn't use docs for %s\n",
-				all_list[i]);
-		}
-	}
-	else if (strcmp("depend", argv[1]) == 0)
-	{
-		/* Create first part of dependency chain
-		 * file.tmpl */
-		printf("%s\t", argv[2]);
-		defaultline       = noaction;
-		internalfunctions = adddep;
-		externalfunctions = adddep;
-		symbolsonly       = adddep;
-		singlefunctions   = adddep2;
-		docsection        = adddep2;
-		findall           = adddep;
-		parse_file(infile);
-		printf("\n");
-	}
-	else
-	{
-		fprintf(stderr, "Unknown option: %s\n", argv[1]);
-		exit(1);
-	}
-	fclose(infile);
-	fflush(stdout);
-	return exitstatus;
-}
diff --git a/scripts/docproc.c b/scripts/docproc.c
new file mode 100644
index 0000000..98dec87
--- /dev/null
+++ b/scripts/docproc.c
@@ -0,0 +1,583 @@
+/*
+ *	docproc is a simple preprocessor for the template files
+ *      used as placeholders for the kernel internal documentation.
+ *	docproc is used for documentation-frontend and
+ *      dependency-generator.
+ *	The two usages have in common that they require
+ *	some knowledge of the .tmpl syntax, therefore they
+ *	are kept together.
+ *
+ *	documentation-frontend
+ *		Scans the template file and call kernel-doc for
+ *		all occurrences of ![EIF]file
+ *		Beforehand each referenced file is scanned for
+ *		any symbols that are exported via these macros:
+ *			EXPORT_SYMBOL(), EXPORT_SYMBOL_GPL(), &
+ *			EXPORT_SYMBOL_GPL_FUTURE()
+ *		This is used to create proper -function and
+ *		-nofunction arguments in calls to kernel-doc.
+ *		Usage: docproc doc file.tmpl
+ *
+ *	dependency-generator:
+ *		Scans the template file and list all files
+ *		referenced in a format recognized by make.
+ *		Usage:	docproc depend file.tmpl
+ *		Writes dependency information to stdout
+ *		in the following format:
+ *		file.tmpl src.c	src2.c
+ *		The filenames are obtained from the following constructs:
+ *		!Efilename
+ *		!Ifilename
+ *		!Dfilename
+ *		!Ffilename
+ *		!Pfilename
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+/* exitstatus is used to keep track of any failing calls to kernel-doc,
+ * but execution continues. */
+int exitstatus = 0;
+
+typedef void DFL(char *);
+DFL *defaultline;
+
+typedef void FILEONLY(char * file);
+FILEONLY *internalfunctions;
+FILEONLY *externalfunctions;
+FILEONLY *symbolsonly;
+FILEONLY *findall;
+
+typedef void FILELINE(char * file, char * line);
+FILELINE * singlefunctions;
+FILELINE * entity_system;
+FILELINE * docsection;
+
+#define MAXLINESZ     2048
+#define MAXFILES      250
+#define KERNELDOCPATH "scripts/"
+#define KERNELDOC     "kernel-doc"
+#define DOCBOOK       "-docbook"
+#define LIST          "-list"
+#define FUNCTION      "-function"
+#define NOFUNCTION    "-nofunction"
+#define NODOCSECTIONS "-no-doc-sections"
+
+static char *srctree, *kernsrctree;
+
+static char **all_list = NULL;
+static int all_list_len = 0;
+
+static void consume_symbol(const char *sym)
+{
+	int i;
+
+	for (i = 0; i < all_list_len; i++) {
+		if (!all_list[i])
+			continue;
+		if (strcmp(sym, all_list[i]))
+			continue;
+		all_list[i] = NULL;
+		break;
+	}
+}
+
+static void usage (void)
+{
+	fprintf(stderr, "Usage: docproc {doc|depend} file\n");
+	fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
+	fprintf(stderr, "doc: frontend when generating kernel documentation\n");
+	fprintf(stderr, "depend: generate list of files referenced within file\n");
+	fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
+	fprintf(stderr, "                     KBUILD_SRC: absolute path to kernel source tree.\n");
+}
+
+/*
+ * Execute kernel-doc with parameters given in svec
+ */
+static void exec_kernel_doc(char **svec)
+{
+	pid_t pid;
+	int ret;
+	char real_filename[PATH_MAX + 1];
+	/* Make sure output generated so far are flushed */
+	fflush(stdout);
+	switch (pid=fork()) {
+		case -1:
+			perror("fork");
+			exit(1);
+		case  0:
+			memset(real_filename, 0, sizeof(real_filename));
+			strncat(real_filename, kernsrctree, PATH_MAX);
+			strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
+					PATH_MAX - strlen(real_filename));
+			execvp(real_filename, svec);
+			fprintf(stderr, "exec ");
+			perror(real_filename);
+			exit(1);
+		default:
+			waitpid(pid, &ret ,0);
+	}
+	if (WIFEXITED(ret))
+		exitstatus |= WEXITSTATUS(ret);
+	else
+		exitstatus = 0xff;
+}
+
+/* Types used to create list of all exported symbols in a number of files */
+struct symbols
+{
+	char *name;
+};
+
+struct symfile
+{
+	char *filename;
+	struct symbols *symbollist;
+	int symbolcnt;
+};
+
+struct symfile symfilelist[MAXFILES];
+int symfilecnt = 0;
+
+static void add_new_symbol(struct symfile *sym, char * symname)
+{
+	sym->symbollist =
+          realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *));
+	sym->symbollist[sym->symbolcnt++].name = strdup(symname);
+}
+
+/* Add a filename to the list */
+static struct symfile * add_new_file(char * filename)
+{
+	symfilelist[symfilecnt++].filename = strdup(filename);
+	return &symfilelist[symfilecnt - 1];
+}
+
+/* Check if file already are present in the list */
+static struct symfile * filename_exist(char * filename)
+{
+	int i;
+	for (i=0; i < symfilecnt; i++)
+		if (strcmp(symfilelist[i].filename, filename) == 0)
+			return &symfilelist[i];
+	return NULL;
+}
+
+/*
+ * List all files referenced within the template file.
+ * Files are separated by tabs.
+ */
+static void adddep(char * file)		   { printf("\t%s", file); }
+static void adddep2(char * file, char * line)     { line = line; adddep(file); }
+static void noaction(char * line)		   { line = line; }
+static void noaction2(char * file, char * line)   { file = file; line = line; }
+
+/* Echo the line without further action */
+static void printline(char * line)               { printf("%s", line); }
+
+/*
+ * Find all symbols in filename that are exported with EXPORT_SYMBOL &
+ * EXPORT_SYMBOL_GPL (& EXPORT_SYMBOL_GPL_FUTURE implicitly).
+ * All symbols located are stored in symfilelist.
+ */
+static void find_export_symbols(char * filename)
+{
+	FILE * fp;
+	struct symfile *sym;
+	char line[MAXLINESZ];
+	if (filename_exist(filename) == NULL) {
+		char real_filename[PATH_MAX + 1];
+		memset(real_filename, 0, sizeof(real_filename));
+		strncat(real_filename, srctree, PATH_MAX);
+		strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
+		strncat(real_filename, filename,
+				PATH_MAX - strlen(real_filename));
+		sym = add_new_file(filename);
+		fp = fopen(real_filename, "r");
+		if (fp == NULL)
+		{
+			fprintf(stderr, "docproc: ");
+			perror(real_filename);
+			exit(1);
+		}
+		while (fgets(line, MAXLINESZ, fp)) {
+			char *p;
+			char *e;
+			if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != NULL) ||
+                            ((p = strstr(line, "EXPORT_SYMBOL")) != NULL)) {
+				/* Skip EXPORT_SYMBOL{_GPL} */
+				while (isalnum(*p) || *p == '_')
+					p++;
+				/* Remove parentheses & additional whitespace */
+				while (isspace(*p))
+					p++;
+				if (*p != '(')
+					continue; /* Syntax error? */
+				else
+					p++;
+				while (isspace(*p))
+					p++;
+				e = p;
+				while (isalnum(*e) || *e == '_')
+					e++;
+				*e = '\0';
+				add_new_symbol(sym, p);
+			}
+		}
+		fclose(fp);
+	}
+}
+
+/*
+ * Document all external or internal functions in a file.
+ * Call kernel-doc with following parameters:
+ * kernel-doc -docbook -nofunction function_name1 filename
+ * Function names are obtained from all the src files
+ * by find_export_symbols.
+ * intfunc uses -nofunction
+ * extfunc uses -function
+ */
+static void docfunctions(char * filename, char * type)
+{
+	int i,j;
+	int symcnt = 0;
+	int idx = 0;
+	char **vec;
+
+	for (i=0; i <= symfilecnt; i++)
+		symcnt += symfilelist[i].symbolcnt;
+	vec = malloc((2 + 2 * symcnt + 3) * sizeof(char *));
+	if (vec == NULL) {
+		perror("docproc: ");
+		exit(1);
+	}
+	vec[idx++] = KERNELDOC;
+	vec[idx++] = DOCBOOK;
+	vec[idx++] = NODOCSECTIONS;
+	for (i=0; i < symfilecnt; i++) {
+		struct symfile * sym = &symfilelist[i];
+		for (j=0; j < sym->symbolcnt; j++) {
+			vec[idx++]     = type;
+			consume_symbol(sym->symbollist[j].name);
+			vec[idx++] = sym->symbollist[j].name;
+		}
+	}
+	vec[idx++]     = filename;
+	vec[idx] = NULL;
+	printf("<!-- %s -->\n", filename);
+	exec_kernel_doc(vec);
+	fflush(stdout);
+	free(vec);
+}
+static void intfunc(char * filename) {	docfunctions(filename, NOFUNCTION); }
+static void extfunc(char * filename) { docfunctions(filename, FUNCTION);   }
+
+/*
+ * Document specific function(s) in a file.
+ * Call kernel-doc with the following parameters:
+ * kernel-doc -docbook -function function1 [-function function2]
+ */
+static void singfunc(char * filename, char * line)
+{
+	char *vec[200]; /* Enough for specific functions */
+        int i, idx = 0;
+        int startofsym = 1;
+	vec[idx++] = KERNELDOC;
+	vec[idx++] = DOCBOOK;
+
+        /* Split line up in individual parameters preceded by FUNCTION */
+        for (i=0; line[i]; i++) {
+                if (isspace(line[i])) {
+                        line[i] = '\0';
+                        startofsym = 1;
+                        continue;
+                }
+                if (startofsym) {
+                        startofsym = 0;
+                        vec[idx++] = FUNCTION;
+                        vec[idx++] = &line[i];
+                }
+        }
+	for (i = 0; i < idx; i++) {
+        	if (strcmp(vec[i], FUNCTION))
+        		continue;
+		consume_symbol(vec[i + 1]);
+	}
+	vec[idx++] = filename;
+	vec[idx] = NULL;
+	exec_kernel_doc(vec);
+}
+
+/*
+ * Insert specific documentation section from a file.
+ * Call kernel-doc with the following parameters:
+ * kernel-doc -docbook -function "doc section" filename
+ */
+static void docsect(char *filename, char *line)
+{
+	char *vec[6]; /* kerneldoc -docbook -function "section" file NULL */
+	char *s;
+
+	for (s = line; *s; s++)
+		if (*s == '\n')
+			*s = '\0';
+
+	if (asprintf(&s, "DOC: %s", line) < 0) {
+		perror("asprintf");
+		exit(1);
+	}
+	consume_symbol(s);
+	free(s);
+
+	vec[0] = KERNELDOC;
+	vec[1] = DOCBOOK;
+	vec[2] = FUNCTION;
+	vec[3] = line;
+	vec[4] = filename;
+	vec[5] = NULL;
+	exec_kernel_doc(vec);
+}
+
+static void find_all_symbols(char *filename)
+{
+	char *vec[4]; /* kerneldoc -list file NULL */
+	pid_t pid;
+	int ret, i, count, start;
+	char real_filename[PATH_MAX + 1];
+	int pipefd[2];
+	char *data, *str;
+	size_t data_len = 0;
+
+	vec[0] = KERNELDOC;
+	vec[1] = LIST;
+	vec[2] = filename;
+	vec[3] = NULL;
+
+	if (pipe(pipefd)) {
+		perror("pipe");
+		exit(1);
+	}
+
+	switch (pid=fork()) {
+		case -1:
+			perror("fork");
+			exit(1);
+		case  0:
+			close(pipefd[0]);
+			dup2(pipefd[1], 1);
+			memset(real_filename, 0, sizeof(real_filename));
+			strncat(real_filename, kernsrctree, PATH_MAX);
+			strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
+					PATH_MAX - strlen(real_filename));
+			execvp(real_filename, vec);
+			fprintf(stderr, "exec ");
+			perror(real_filename);
+			exit(1);
+		default:
+			close(pipefd[1]);
+			data = malloc(4096);
+			do {
+				while ((ret = read(pipefd[0],
+						   data + data_len,
+						   4096)) > 0) {
+					data_len += ret;
+					data = realloc(data, data_len + 4096);
+				}
+			} while (ret == -EAGAIN);
+			if (ret != 0) {
+				perror("read");
+				exit(1);
+			}
+			waitpid(pid, &ret ,0);
+	}
+	if (WIFEXITED(ret))
+		exitstatus |= WEXITSTATUS(ret);
+	else
+		exitstatus = 0xff;
+
+	count = 0;
+	/* poor man's strtok, but with counting */
+	for (i = 0; i < data_len; i++) {
+		if (data[i] == '\n') {
+			count++;
+			data[i] = '\0';
+		}
+	}
+	start = all_list_len;
+	all_list_len += count;
+	all_list = realloc(all_list, sizeof(char *) * all_list_len);
+	str = data;
+	for (i = 0; i < data_len && start != all_list_len; i++) {
+		if (data[i] == '\0') {
+			all_list[start] = str;
+			str = data + i + 1;
+			start++;
+		}
+	}
+}
+
+/*
+ * Parse file, calling action specific functions for:
+ * 1) Lines containing !E
+ * 2) Lines containing !I
+ * 3) Lines containing !D
+ * 4) Lines containing !F
+ * 5) Lines containing !P
+ * 6) Lines containing !C
+ * 7) Default lines - lines not matching the above
+ */
+static void parse_file(FILE *infile)
+{
+	char line[MAXLINESZ];
+	char * s;
+	while (fgets(line, MAXLINESZ, infile)) {
+		if (line[0] == '!') {
+			s = line + 2;
+			switch (line[1]) {
+				case 'E':
+					while (*s && !isspace(*s)) s++;
+					*s = '\0';
+					externalfunctions(line+2);
+					break;
+				case 'I':
+					while (*s && !isspace(*s)) s++;
+					*s = '\0';
+					internalfunctions(line+2);
+					break;
+				case 'D':
+					while (*s && !isspace(*s)) s++;
+                                        *s = '\0';
+                                        symbolsonly(line+2);
+                                        break;
+				case 'F':
+					/* filename */
+					while (*s && !isspace(*s)) s++;
+					*s++ = '\0';
+                                        /* function names */
+					while (isspace(*s))
+						s++;
+					singlefunctions(line +2, s);
+					break;
+				case 'P':
+					/* filename */
+					while (*s && !isspace(*s)) s++;
+					*s++ = '\0';
+					/* DOC: section name */
+					while (isspace(*s))
+						s++;
+					docsection(line + 2, s);
+					break;
+				case 'C':
+					while (*s && !isspace(*s)) s++;
+					*s = '\0';
+					if (findall)
+						findall(line+2);
+					break;
+				default:
+					defaultline(line);
+			}
+		}
+		else {
+			defaultline(line);
+		}
+	}
+	fflush(stdout);
+}
+
+
+int main(int argc, char *argv[])
+{
+	FILE * infile;
+	int i;
+
+	srctree = getenv("SRCTREE");
+	if (!srctree)
+		srctree = getcwd(NULL, 0);
+	kernsrctree = getenv("KBUILD_SRC");
+	if (!kernsrctree || !*kernsrctree)
+		kernsrctree = srctree;
+	if (argc != 3) {
+		usage();
+		exit(1);
+	}
+	/* Open file, exit on error */
+	infile = fopen(argv[2], "r");
+        if (infile == NULL) {
+                fprintf(stderr, "docproc: ");
+                perror(argv[2]);
+                exit(2);
+        }
+
+	if (strcmp("doc", argv[1]) == 0)
+	{
+		/* Need to do this in two passes.
+		 * First pass is used to collect all symbols exported
+		 * in the various files;
+		 * Second pass generate the documentation.
+		 * This is required because some functions are declared
+		 * and exported in different files :-((
+		 */
+		/* Collect symbols */
+		defaultline       = noaction;
+		internalfunctions = find_export_symbols;
+		externalfunctions = find_export_symbols;
+		symbolsonly       = find_export_symbols;
+		singlefunctions   = noaction2;
+		docsection        = noaction2;
+		findall           = find_all_symbols;
+		parse_file(infile);
+
+		/* Rewind to start from beginning of file again */
+		fseek(infile, 0, SEEK_SET);
+		defaultline       = printline;
+		internalfunctions = intfunc;
+		externalfunctions = extfunc;
+		symbolsonly       = printline;
+		singlefunctions   = singfunc;
+		docsection        = docsect;
+		findall           = NULL;
+
+		parse_file(infile);
+
+		for (i = 0; i < all_list_len; i++) {
+			if (!all_list[i])
+				continue;
+			fprintf(stderr, "Warning: didn't use docs for %s\n",
+				all_list[i]);
+		}
+	}
+	else if (strcmp("depend", argv[1]) == 0)
+	{
+		/* Create first part of dependency chain
+		 * file.tmpl */
+		printf("%s\t", argv[2]);
+		defaultline       = noaction;
+		internalfunctions = adddep;
+		externalfunctions = adddep;
+		symbolsonly       = adddep;
+		singlefunctions   = adddep2;
+		docsection        = adddep2;
+		findall           = adddep;
+		parse_file(infile);
+		printf("\n");
+	}
+	else
+	{
+		fprintf(stderr, "Unknown option: %s\n", argv[1]);
+		exit(1);
+	}
+	fclose(infile);
+	fflush(stdout);
+	return exitstatus;
+}
