tmp_suning_uos_patched/arch/riscv/kernel/vdso
Jisheng Zhang 3c23e23c7a riscv: vdso: fix and clean-up Makefile
[ Upstream commit 772d7891e8b3b0baae7bb88a294d61fd07ba6d15 ]

Running "make" on an already compiled kernel tree will rebuild the
kernel even without any modifications:

  CALL    linux/scripts/checksyscalls.sh
  CALL    linux/scripts/atomic/check-atomics.sh
  CHK     include/generated/compile.h
  SO2S    arch/riscv/kernel/vdso/vdso-syms.S
  AS      arch/riscv/kernel/vdso/vdso-syms.o
  AR      arch/riscv/kernel/vdso/built-in.a
  AR      arch/riscv/kernel/built-in.a
  AR      arch/riscv/built-in.a
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  AR      init/built-in.a
  LD      vmlinux.o

The reason is "Any target that utilizes if_changed must be listed in
$(targets), otherwise the command line check will fail, and the target
will always be built" as explained by Documentation/kbuild/makefiles.rst

Fix this build bug by adding vdso-syms.S to $(targets)

At the same time, there are two trivial clean up modifications:

- the vdso-dummy.o is not needed any more after so remove it.

- vdso.lds is a generated file, so it should be prefixed with
  $(obj)/ instead of $(src)/

Fixes: c2c81bb2f6 ("RISC-V: Fix the VDSO symbol generaton for binutils-2.35+")
Cc: stable@vger.kernel.org
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-06-10 13:39:22 +02:00
..
.gitignore RISC-V: Fix the VDSO symbol generaton for binutils-2.35+ 2020-11-06 00:03:48 -08:00
flush_icache.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
getcpu.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
Makefile riscv: vdso: fix and clean-up Makefile 2021-06-10 13:39:22 +02:00
note.S riscv: add Linux note to vdso 2020-05-04 14:22:34 -07:00
rt_sigreturn.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
so2s.sh RISC-V: Fix the VDSO symbol generaton for binutils-2.35+ 2020-11-06 00:03:48 -08:00
vdso.lds.S riscv: use vDSO common flow to reduce the latency of the time-related functions 2020-06-10 19:47:16 -07:00
vdso.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
vgettimeofday.c riscv: Add extern declarations for vDSO time-related functions 2020-06-25 15:15:51 -07:00