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authorMatthias Kaehlcke <mka@chromium.org>2019-03-18 17:10:05 -0400
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-03-20 22:27:29 +0900
commita75bb4eb9e565b9f5115e2e8c07377ce32cbe69a (patch)
tree57802d72d818c02d9885d471179195bb6ea523e1
parent9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff)
Revert "kbuild: use -Oz instead of -Os when using clang"
The clang option -Oz enables *aggressive* optimization for size, which doesn't necessarily result in smaller images, but can have negative impact on performance. Switch back to the less aggressive -Os. This reverts commit 6748cb3c299de1ffbe56733647b01dbcc398c419. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
-rw-r--r--Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 99c0530489ef..8c6acfdfe660 100644
--- a/Makefile
+++ b/Makefile
@@ -677,7 +677,7 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-KBUILD_CFLAGS += $(call cc-option,-Oz,-Os)
+KBUILD_CFLAGS += -Os
else
KBUILD_CFLAGS += -O2
endif