Merge tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers

Pull preparatory patches for user API disintegration from David Howells:
 "The patches herein prepare for the extraction of the Userspace API
  bits from the various header files named in the Kbuild files.

  New subdirectories are created under either include/uapi/ or
  arch/x/include/uapi/ that correspond to the subdirectory containing
  that file under include/ or arch/x/include/.

  The new subdirs under the uapi/ directory are populated with Kbuild
  files that mostly do nothing at this time.  Further patches will
  disintegrate the headers in each original directory and fill in the
  Kbuild files as they do it.

  These patches also:

   (1) fix up #inclusions of "foo.h" rather than <foo.h>.

   (2) Remove some redundant #includes from the DRM code.

   (3) Make the kernel build infrastructure handle Kbuild files both in
       the old places and the new UAPI place that both specify headers
       to be exported.

   (4) Fix some kernel tools that #include kernel headers during their
       build.

  I have compile tested this with allyesconfig against x86_64,
  allmodconfig against i386 and a scattering of additional defconfigs of
  other arches.  Prepared for main script

  Signed-off-by: David Howells <dhowells@redhat.com>
  Acked-by: Arnd Bergmann <arnd@arndb.de>
  Acked-by: Thomas Gleixner <tglx@linutronix.de>
  Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
  Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
  Acked-by: Dave Jones <davej@redhat.com>
  Acked-by: H. Peter Anvin <hpa@zytor.com>"

* tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: Plumb the UAPI Kbuilds into the user header installation and checking
  UAPI: x86: Differentiate the generated UAPI and internal headers
  UAPI: Remove the objhdr-y export list
  UAPI: Move linux/version.h
  UAPI: Set up uapi/asm/Kbuild.asm
  UAPI: x86: Fix insn_sanity build failure after UAPI split
  UAPI: x86: Fix the test_get_len tool
  UAPI: (Scripted) Set up UAPI Kbuild files
  UAPI: Partition the header include path sets and add uapi/ header directories
  UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
  UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/
  UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
  UAPI: Refer to the DRM UAPI headers with <...> and from certain headers only

1 files changed, 27 insertions, 16 deletions

diff --git a/Makefile b/Makefile
index 846dd7607854..86eb6acb3978 100644
--- a/Makefile
+++ b/Makefile
@@ -350,12 +350,22 @@ AFLAGS_KERNEL	=
 CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage
 
 
+# Use USERINCLUDE when you must reference the UAPI directories only.
+USERINCLUDE    := \
+		-I$(srctree)/arch/$(hdr-arch)/include/uapi \
+		-Iarch/$(hdr-arch)/include/generated/uapi \
+		-I$(srctree)/include/uapi \
+		-Iinclude/generated/uapi \
+                -include $(srctree)/include/linux/kconfig.h
+
 # Use LINUXINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
-LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include \
-                   -Iarch/$(hdr-arch)/include/generated -Iinclude \
-                   $(if $(KBUILD_SRC), -I$(srctree)/include) \
-                   -include $(srctree)/include/linux/kconfig.h
+LINUXINCLUDE    := \
+		-I$(srctree)/arch/$(hdr-arch)/include \
+		-Iarch/$(hdr-arch)/include/generated \
+		$(if $(KBUILD_SRC), -I$(srctree)/include) \
+		-Iinclude \
+		$(USERINCLUDE)
 
 KBUILD_CPPFLAGS := -D__KERNEL__
 
@@ -437,9 +447,11 @@ 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/uapi/linux/version.h
+
 no-dot-config-targets := clean mrproper distclean \
 			 cscope gtags TAGS tags help %docs check% coccicheck \
-			 include/linux/version.h headers_% archheaders archscripts \
+			 $(version_h) headers_% archheaders archscripts \
 			 kernelversion %src-pkg
 
 config-targets := 0
@@ -809,7 +821,7 @@ endif
 # prepare2 creates a makefile if using a separate output directory
 prepare2: prepare3 outputmakefile asm-generic
 
-prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \
+prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
                    include/config/auto.conf
 	$(cmd_crmodverdir)
 
@@ -842,7 +854,7 @@ define filechk_version.h
 	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
 endef
 
-include/linux/version.h: $(srctree)/Makefile FORCE
+$(version_h): $(srctree)/Makefile FORCE
 	$(call filechk,version.h)
 
 include/generated/utsrelease.h: include/config/kernel.release FORCE
@@ -887,7 +899,7 @@ PHONY += archscripts
 archscripts:
 
 PHONY += __headers
-__headers: include/linux/version.h scripts_basic asm-generic archheaders archscripts FORCE
+__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
 	$(Q)$(MAKE) $(build)=scripts build_unifdef
 
 PHONY += headers_install_all
@@ -896,10 +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
@@ -907,8 +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
@@ -997,8 +1009,7 @@ CLEAN_DIRS  += $(MODVERDIR)
 # Directories & files removed with 'make mrproper'
 MRPROPER_DIRS  += include/config usr/include include/generated          \
                   arch/*/include/generated
-MRPROPER_FILES += .config .config.old .version .old_version             \
-                  include/linux/version.h                               \
+MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
 		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
 
 # clean - Delete most, but leave enough to build external modules