]> git.karo-electronics.de Git - linux-beck.git/commitdiff
UAPI: Plumb the UAPI Kbuilds into the user header installation and checking
authorDavid Howells <dhowells@redhat.com>
Tue, 2 Oct 2012 17:01:57 +0000 (18:01 +0100)
committerDavid Howells <dhowells@redhat.com>
Tue, 2 Oct 2012 17:01:57 +0000 (18:01 +0100)
Plumb the UAPI Kbuilds into the user header installation and checking system.
As the headers are split the entries will be transferred across from the old
Kbuild files to the UAPI Kbuild files.

The changes made in this commit are:

 (1) Exported generated files (of which there are currently four) are moved to
     uapi/ directories under the appropriate generated/ directory, thus we
     get:

include/generated/uapi/linux/version.h
arch/x86/include/generated/uapi/asm/unistd_32.h
arch/x86/include/generated/uapi/asm/unistd_64.h
arch/x86/include/generated/uapi/asm/unistd_x32.h

     These paths were added to the build as -I flags in a previous patch.

 (2) scripts/Makefile.headersinst is now given the UAPI path to install from
     rather than the old path.

     It then determines the old path from that and includes that Kbuild also
     if it exists, thus permitting the headers to exist in either directory
     during the changeover.

     I also renamed the "install" variable to "installdir" as it refers to a
     directory not the install program.

 (3) scripts/headers_install.pl is altered to take a list of source file paths
     instead of just their names so that the makefile can tell it exactly
     where to find each file.

     For the moment, files can be obtained from one of four places for each
     output directory:

.../include/uapi/foo/
.../include/generated/uapi/foo/
.../include/foo/
.../include/generated/foo/

     The non-UAPI paths will be dropped later.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Makefile
arch/x86/include/asm/Kbuild
arch/x86/syscalls/Makefile
include/linux/Kbuild
include/uapi/linux/Kbuild
scripts/Makefile.headersinst
scripts/headers_install.pl

index 1a5d315e28429995a07de4cc97e9608d6e2b0d5e..86eb6acb3978c81121746356290ca1d7e82d0c4e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -447,7 +447,7 @@ asm-generic:
 # Detect when mixed targets is specified, and make a second invocation
 # of make so .config is not included in this case either (for *config).
 
-version_h := include/generated/linux/version.h
+version_h := include/generated/uapi/linux/version.h
 
 no-dot-config-targets := clean mrproper distclean \
                         cscope gtags TAGS tags help %docs check% coccicheck \
@@ -908,10 +908,10 @@ headers_install_all:
 
 PHONY += headers_install
 headers_install: __headers
-       $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \
-       $(error Headers not exportable for the $(SRCARCH) architecture))
-       $(Q)$(MAKE) $(hdr-inst)=include
-       $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst)
+       $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
+         $(error Headers not exportable for the $(SRCARCH) architecture))
+       $(Q)$(MAKE) $(hdr-inst)=include/uapi
+       $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
 
 PHONY += headers_check_all
 headers_check_all: headers_install_all
@@ -919,8 +919,8 @@ headers_check_all: headers_install_all
 
 PHONY += headers_check
 headers_check: headers_install
-       $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
-       $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1
+       $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
+       $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
 
 # ---------------------------------------------------------------------------
 # Modules
index f9c0d3ba9e849ef6de5a43b6f32bffacfd73a1db..1595d68134326aad1e1ac25d93eaf2518aecbec3 100644 (file)
@@ -22,7 +22,3 @@ header-y += sigcontext32.h
 header-y += ucontext.h
 header-y += vm86.h
 header-y += vsyscall.h
-
-genhdr-y += unistd_32.h
-genhdr-y += unistd_64.h
-genhdr-y += unistd_x32.h
index 174b03248418f7dfd8a87e6325386849135651d0..f325af26107c2fde096fe2961d3579e2f3b78e91 100644 (file)
@@ -1,5 +1,5 @@
 out := $(obj)/../include/generated/asm
-uapi := $(obj)/../include/generated/asm
+uapi := $(obj)/../include/generated/uapi/asm
 
 # Create output directory if not already present
 _dummy := $(shell [ -d '$(out)' ] || mkdir -p '$(out)') \
index 0236a3b346fe9fee098b3a820e48a4e858e570cb..3f4c207a93bb5ff8ea27b7eaabf5b3a29afc0e07 100644 (file)
@@ -20,8 +20,6 @@ header-y += netfilter_ipv6/
 header-y += usb/
 header-y += wimax/
 
-genhdr-y += version.h
-
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/a.out.h \
                  $(srctree)/include/asm-$(SRCARCH)/a.out.h \
                  $(INSTALL_HDR_PATH)/include/asm-*/a.out.h),)
index 13a9cf4cb6fee41707c3650516474b9fa10fae6f..b0fd4d03499d02c3d0b0a47f76b897a12672012c 100644 (file)
@@ -20,3 +20,5 @@ header-y += netfilter_ipv4/
 header-y += netfilter_ipv6/
 header-y += usb/
 header-y += wimax/
+
+genhdr-y += version.h
index 463b95acc15bbd1ffec991913e67908dfc3f7e4a..06ba4a70bd4d0db666a4b50b90b73f33e7c6b81e 100644 (file)
@@ -8,7 +8,7 @@
 # ==========================================================================
 
 # called may set destination dir (when installing to asm/)
-_dst := $(if $(dst),$(dst),$(obj))
+_dst := $(or $(destination-y),$(dst),$(obj))
 
 # generated header directory
 gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
@@ -16,47 +16,64 @@ gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
 kbuild-file := $(srctree)/$(obj)/Kbuild
 include $(kbuild-file)
 
-_dst := $(if $(destination-y),$(destination-y),$(_dst))
+old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild
+ifneq ($(wildcard $(old-kbuild-file)),)
+include $(old-kbuild-file)
+endif
 
 include scripts/Kbuild.include
 
-install       := $(INSTALL_HDR_PATH)/$(_dst)
+installdir    := $(INSTALL_HDR_PATH)/$(subst uapi/,,$(_dst))
 
 header-y      := $(sort $(header-y))
 subdirs       := $(patsubst %/,%,$(filter %/, $(header-y)))
 header-y      := $(filter-out %/, $(header-y))
 
 # files used to track state of install/check
-install-file  := $(install)/.install
-check-file    := $(install)/.check
+install-file  := $(installdir)/.install
+check-file    := $(installdir)/.check
 
 # generic-y list all files an architecture uses from asm-generic
 # Use this to build a list of headers which require a wrapper
 wrapper-files := $(filter $(header-y), $(generic-y))
 
+srcdir        := $(srctree)/$(obj)
+gendir        := $(objtree)/$(gen)
+
+oldsrcdir     := $(srctree)/$(subst /uapi,,$(obj))
+
 # all headers files for this dir
 header-y      := $(filter-out $(generic-y), $(header-y))
 all-files     := $(header-y) $(genhdr-y) $(wrapper-files)
-input-files   := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
-                 $(addprefix $(objtree)/$(gen)/,$(genhdr-y))
-output-files  := $(addprefix $(install)/, $(all-files))
+output-files  := $(addprefix $(installdir)/, $(all-files))
+
+input-files   := $(foreach hdr, $(header-y), \
+                  $(or \
+                       $(wildcard $(srcdir)/$(hdr)), \
+                       $(wildcard $(oldsrcdir)/$(hdr)), \
+                       $(error Missing UAPI file $(srcdir)/$(hdr)) \
+                  )) \
+                $(foreach hdr, $(genhdr-y), \
+                  $(or \
+                       $(wildcard $(gendir)/$(hdr)), \
+                       $(error Missing generated UAPI file $(gendir)/$(hdr)) \
+                  ))
 
 # Work out what needs to be removed
-oldheaders    := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
+oldheaders    := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
 unwanted      := $(filter-out $(all-files),$(oldheaders))
 
 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
-unwanted-file := $(addprefix $(install)/, $(unwanted))
+unwanted-file := $(addprefix $(installdir)/, $(unwanted))
 
 printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
 
 quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
                             file$(if $(word 2, $(all-files)),s))
       cmd_install = \
-        $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
-        $(PERL) $< $(objtree)/$(gen) $(install) $(SRCARCH) $(genhdr-y); \
+        $(PERL) $< $(installdir) $(SRCARCH) $(input-files); \
         for F in $(wrapper-files); do                                   \
-                echo "\#include <asm-generic/$$F>" > $(install)/$$F;    \
+                echo "\#include <asm-generic/$$F>" > $(installdir)/$$F;    \
         done;                                                           \
         touch $@
 
@@ -67,7 +84,7 @@ quiet_cmd_check = CHECK   $(printdir) ($(words $(all-files)) files)
 # Headers list can be pretty long, xargs helps to avoid
 # the "Argument list too long" error.
       cmd_check = for f in $(all-files); do                          \
-                  echo "$(install)/$${f}"; done                      \
+                  echo "$(installdir)/$${f}"; done                      \
                   | xargs                                            \
                   $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
                  touch $@
index 48462be328bba603677d7f7c5e0707289d7af645..239d22d4207b92aee3fb0a9233375acf673d2311 100644 (file)
@@ -4,8 +4,7 @@
 # user space and copy the files to their destination.
 #
 # Usage: headers_install.pl readdir installdir arch [files...]
-# readdir:    dir to open files
-# installdir: dir to install the files
+# installdir: dir to install the files to
 # arch:       current architecture
 #             arch is used to force a reinstallation when the arch
 #             changes because kbuild then detect a command line change.
 
 use strict;
 
-my ($readdir, $installdir, $arch, @files) = @ARGV;
+my ($installdir, $arch, @files) = @ARGV;
 
 my $unifdef = "scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__";
 
-foreach my $file (@files) {
+foreach my $filename (@files) {
+       my $file = $filename;
+       $file =~ s!^.*/!!;
+
        my $tmpfile = "$installdir/$file.tmp";
 
-       open(my $in, '<', "$readdir/$file")
-           or die "$readdir/$file: $!\n";
+       open(my $in, '<', $filename)
+           or die "$filename: $!\n";
        open(my $out, '>', $tmpfile)
            or die "$tmpfile: $!\n";
        while (my $line = <$in>) {