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vdso: Rework vdso processing files

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There were multiple copy of the same code spread over the different
architectures handling the vDSO.

This patch is merging the duplicated code in arch/*/vdso-pie.c and
arch/*/include/asm/vdso.h in the common files and let only the architecture
specific part in the arch/*/* files.

The file are now organized this way:

include/asm-generic/vdso.h
	contains basic definition which could be overwritten by
	architectures.

arch/*/include/asm/vdso.h
	contains per architecture definitions.
	It may includes include/asm-generic/vdso.h

pie/util-vdso.c
include/util-vdso.h
	These files contains code and definitions common to both criu and
	the parasite code.
	The file include/util-vdso.h includes arch/*/include/asm/vdso.h.

pie/parsite-vdso.c
include/parasite-vdso.h
	contains code and definition specific to the parasite code handling
	the vDSO.
	The file include/parasite-vdso.h includes include/util-vdso.h.

arch/*/vdso-pie.c
	contains the architecture specific code installing the vDSO
	trampoline.

vdso.c
include/vdso.h
	contains code and definition specific to the criu code handling the
	vDSO.
	The file include/vdso.h includes include/util-vdso.h.

CC: Christopher Covington <cov@codeaurora.org>
CC: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Laurent Dufour 2015-09-03 16:26:30 +02:00 • committed by Pavel Emelyanov
parent 6eaa4e92bf
commit 7f01d691c7
18 changed files with 684 additions and 1688 deletions
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10
Makefile
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@ -234,15 +234,7 @@ lib: $(VERSION_HEADER) config built-in.o
$(Q) $(MAKE) $(build)=lib all
ifeq ($(VDSO),y)
$(ARCH_DIR)/vdso-pie.o: pie
$(Q) $(MAKE) $(build)=pie $(ARCH_DIR)/vdso-pie.o
PROGRAM-BUILTINS += $(ARCH_DIR)/vdso-pie.o
ifeq ($(SRCARCH),aarch64)
PROGRAM-BUILTINS += $(ARCH_DIR)/intraprocedure.o
endif
ifeq ($(SRCARCH),ppc64)
PROGRAM-BUILTINS += $(ARCH_DIR)/vdso-trampoline.o
endif
PROGRAM-BUILTINS += pie/util-vdso.o
endif
PROGRAM-BUILTINS += pie/util-fd.o