linux-kernel - [PATCH v2] arm64: vdso: Cleanup Makefiles

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Date:   Fri, 19 Jul 2019 11:10:18 +0100
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     catalin.marinas@....com, will.deacon@....com, arnd@...db.de,
        linux@...linux.org.uk, daniel.lezcano@...aro.org,
        tglx@...utronix.de, salyzyn@...roid.com, pcc@...gle.com,
        0x7f454c46@...il.com, linux@...musvillemoes.dk,
        huw@...eweavers.com, sthotton@...vell.com, andre.przywara@....com,
        luto@...nel.org, john.stultz@...aro.org, naohiro.aota@....com,
        yamada.masahiro@...ionext.com, Will Deacon <will@...nel.org>
Subject: [PATCH v2] arm64: vdso: Cleanup Makefiles

The recent changes to the vdso library for arm64 and the introduction of
the compat vdso library have generated some misalignment in the
Makefiles.

Cleanup the Makefiles for vdso and vdso32 libraries:
  * Removing unused rules.
  * Unifying the displayed compilation messages.
  * Simplifying the generic library inclusion path for
    arm64 vdso.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
---
 arch/arm64/kernel/vdso/Makefile   |  9 +++------
 arch/arm64/kernel/vdso32/Makefile | 10 +++++-----
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index 75d25679d879..dd2514bb1511 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -32,10 +32,10 @@ UBSAN_SANITIZE			:= n
 OBJECT_FILES_NON_STANDARD	:= y
 KCOV_INSTRUMENT			:= n
 
-ifeq ($(c-gettimeofday-y),)
 CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny
-else
-CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -include $(c-gettimeofday-y)
+
+ifneq ($(c-gettimeofday-y),)
+  CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
 endif
 
 # Clang versions less than 8 do not support -mcmodel=tiny
@@ -73,9 +73,6 @@ include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
 	$(call if_changed,vdsosym)
 
 # Actual build commands
-quiet_cmd_vdsocc = VDSOCC   $@
-      cmd_vdsocc = $(CC) $(a_flags) $(c_flags) -c -o $@ $<
-
 quiet_cmd_vdsold_and_vdso_check = LD      $@
       cmd_vdsold_and_vdso_check = $(cmd_ld); $(cmd_vdso_check)
 
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 21009ed5a755..154767d60001 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -155,17 +155,17 @@ $(asm-obj-vdso): %.o: %.S FORCE
 	$(call if_changed_dep,vdsoas)
 
 # Actual build commands
-quiet_cmd_vdsold_and_vdso_check = LD      $@
+quiet_cmd_vdsold_and_vdso_check = LD32    $@
       cmd_vdsold_and_vdso_check = $(cmd_vdsold); $(cmd_vdso_check)
 
-quiet_cmd_vdsold = VDSOL   $@
+quiet_cmd_vdsold = LD32    $@
       cmd_vdsold = $(COMPATCC) -Wp,-MD,$(depfile) $(VDSO_LDFLAGS) \
                    -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
-quiet_cmd_vdsocc = VDSOC   $@
+quiet_cmd_vdsocc = CC32    $@
       cmd_vdsocc = $(COMPATCC) -Wp,-MD,$(depfile) $(VDSO_CFLAGS) -c -o $@ $<
-quiet_cmd_vdsocc_gettimeofday = VDSOC_GTD   $@
+quiet_cmd_vdsocc_gettimeofday = CC32    $@
       cmd_vdsocc_gettimeofday = $(COMPATCC) -Wp,-MD,$(depfile) $(VDSO_CFLAGS) $(VDSO_CFLAGS_gettimeofday_o) -c -o $@ $<
-quiet_cmd_vdsoas = VDSOA   $@
+quiet_cmd_vdsoas = AS32    $@
       cmd_vdsoas = $(COMPATCC) -Wp,-MD,$(depfile) $(VDSO_AFLAGS) -c -o $@ $<
 
 quiet_cmd_vdsomunge = MUNGE   $@
-- 
2.22.0