1 files changed, 28 insertions, 13 deletions

diff --git a/Makefile b/Makefile
index 85a14f5b74e9..7431c283f15b 100644
--- a/Makefile
+++ b/Makefile
@@ -332,10 +332,9 @@ CHECK		= sparse
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
                   -Wbitwise -Wno-return-void $(CF)
-MODFLAGS        = -DMODULE
-CFLAGS_MODULE   = $(MODFLAGS)
-AFLAGS_MODULE   = $(MODFLAGS)
-LDFLAGS_MODULE  = -T $(srctree)/scripts/module-common.lds
+CFLAGS_MODULE   =
+AFLAGS_MODULE   =
+LDFLAGS_MODULE  =
 CFLAGS_KERNEL   =
 AFLAGS_KERNEL   =
 CFLAGS_GCOV     = -fprofile-arcs -ftest-coverage
@@ -354,7 +353,12 @@ KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
                    -Werror-implicit-function-declaration \
                    -Wno-format-security \
                    -fno-delete-null-pointer-checks
+KBUILD_AFLAGS_KERNEL :=
+KBUILD_CFLAGS_KERNEL :=
 KBUILD_AFLAGS   := -D__ASSEMBLY__
+KBUILD_AFLAGS_MODULE  := -DMODULE
+KBUILD_CFLAGS_MODULE  := -DMODULE
+KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
@@ -369,6 +373,8 @@ export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
+export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
 
 # When compiling out-of-tree modules, put MODVERDIR in the module
 # tree rather than in the kernel tree. The kernel tree might
@@ -412,9 +418,9 @@ endif
 # of make so .config is not included in this case either (for *config).
 
 no-dot-config-targets := clean mrproper distclean \
-                         cscope TAGS tags help %docs check% \
+                         cscope TAGS tags help %docs check% coccicheck \
                          include/linux/version.h headers_% \
-                         kernelrelease kernelversion %src-pkg
+                         kernelversion %src-pkg
 
 config-targets := 0
 mixed-targets  := 0
@@ -526,7 +532,7 @@ endif # $(dot-config)
 # The all: target is the default when no target is given on the
 # command line.
 # This allow a user to issue only 'make' to build a kernel including modules
-# Defaults vmlinux but it is usually overridden in the arch makefile
+# Defaults to vmlinux, but the arch makefile usually adds further targets
 all: vmlinux
 
 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
@@ -557,6 +563,10 @@ KBUILD_CFLAGS	+= -g
 KBUILD_AFLAGS   += -gdwarf-2
 endif
 
+ifdef CONFIG_DEBUG_INFO_REDUCED
+KBUILD_CFLAGS   += $(call cc-option, -femit-struct-debug-baseonly)
+endif
+
 ifdef CONFIG_FUNCTION_TRACER
 KBUILD_CFLAGS   += -pg
 endif
@@ -603,7 +613,7 @@ endif
 # Use --build-id when available.
 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
                               $(call cc-ldoption, -Wl$(comma)--build-id,))
-LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
+KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
 
 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
@@ -1211,8 +1221,9 @@ help:
         @echo  '  includecheck    - Check for duplicate included header files'
         @echo  '  export_report   - List the usages of all exported symbols'
         @echo  '  headers_check   - Sanity check on exported headers'
-        @echo  '  headerdep       - Detect inclusion cycles in headers'; \
-         echo  ''
+        @echo  '  headerdep       - Detect inclusion cycles in headers'
+        @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
+        @echo  ''
         @echo  'Kernel packaging:'
         @$(MAKE) $(build)=$(package-dir) help
         @echo  ''
@@ -1371,6 +1382,9 @@ versioncheck:
                 -name '*.[hcS]' -type f -print | sort \
                 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
 
+coccicheck:
+        $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
+
 namespacecheck:
         $(PERL) $(srctree)/scripts/namespace.pl
 
@@ -1395,9 +1409,9 @@ checkstack:
         $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
         $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
 
-kernelrelease:
-        $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
-        $(error kernelrelease not valid - run 'make prepare' to update it))
+kernelrelease: include/config/kernel.release
+        @echo $(KERNELRELEASE)
+
 kernelversion:
         @echo $(KERNELVERSION)
 
@@ -1474,6 +1488,7 @@ cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
                   $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
 
 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
+          $(KBUILD_AFLAGS_KERNEL)                              \
           $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
           $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)