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Subject[RFC: 2.6 patch] remove the CONFIG_CC_ALIGN_* options
I don't see any use case for the CONFIG_CC_ALIGN_* options:
- they are only available if EMBEDDED
- people using EMBEDDED will most likely also enable
CC_OPTIMIZE_FOR_SIZE
- the default for -Os is to disable alignment


Signed-off-by: Adrian Bunk <bunk@stusta.de>

---

Makefile | 7 -------
init/Kconfig | 37 -------------------------------------
2 files changed, 44 deletions(-)

--- linux-2.6.16-rc2-mm1-full/init/Kconfig.old 2006-02-12 15:30:08.000000000 +0100
+++ linux-2.6.16-rc2-mm1-full/init/Kconfig 2006-02-12 15:30:53.000000000 +0100
@@ -353,45 +353,8 @@
to userspace as tmpfs if TMPFS is enabled. Disabling this
option replaces shmem and tmpfs with the much simpler ramfs code,
which may be appropriate on small systems without swap.

-config CC_ALIGN_FUNCTIONS
- int "Function alignment" if EMBEDDED
- default 0
- help
- Align the start of functions to the next power-of-two greater than n,
- skipping up to n bytes. For instance, 32 aligns functions
- to the next 32-byte boundary, but 24 would align to the next
- 32-byte boundary only if this can be done by skipping 23 bytes or less.
- Zero means use compiler's default.
-
-config CC_ALIGN_LABELS
- int "Label alignment" if EMBEDDED
- default 0
- help
- Align all branch targets to a power-of-two boundary, skipping
- up to n bytes like ALIGN_FUNCTIONS. This option can easily
- make code slower, because it must insert dummy operations for
- when the branch target is reached in the usual flow of the code.
- Zero means use compiler's default.
-
-config CC_ALIGN_LOOPS
- int "Loop alignment" if EMBEDDED
- default 0
- help
- Align loops to a power-of-two boundary, skipping up to n bytes.
- Zero means use compiler's default.
-
-config CC_ALIGN_JUMPS
- int "Jump alignment" if EMBEDDED
- default 0
- help
- Align branch targets to a power-of-two boundary, for branch
- targets where the targets can only be reached by jumping,
- skipping up to n bytes like ALIGN_FUNCTIONS. In this case,
- no dummy operations need be executed.
- Zero means use compiler's default.
-
config SLAB
default y
bool "Use full SLAB allocator" if EMBEDDED
help
--- linux-2.6.16-rc2-mm1-full/Makefile.old 2006-02-12 15:30:59.000000000 +0100
+++ linux-2.6.16-rc2-mm1-full/Makefile 2006-02-12 15:31:24.000000000 +0100
@@ -473,15 +473,8 @@
else
CFLAGS += -O2
endif

-#Add align options if CONFIG_CC_* is not equal to 0
-add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
-
ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
-
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