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| author | Kim Phillips <kim.phillips@freescale.com> | 2013-11-06 05:15:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-12-29 13:32:45 +0100 |
| commit | 017f161a55b48807a73fc9dff0b69f081bf43ee3 (patch) | |
| tree | 1c440562e87f4c394d483935486019cc9854ffe8 /arch/arm/mm | |
| parent | ARM: 7921/1: mcpm: remove redundant dsb instructions prior to sev (diff) | |
| download | linux-017f161a55b48807a73fc9dff0b69f081bf43ee3.tar.xz linux-017f161a55b48807a73fc9dff0b69f081bf43ee3.zip | |
ARM: 7877/1: use built-in byte swap function
Enable the compiler intrinsic for byte swapping on arch ARM. This
allows the compiler to detect and be able to optimize out byte
swappings, and has a very modest benefit on vmlinux size (Linaro gcc
4.8):
text data bss dec hex filename
2840310 123932 61960 3026202 2e2d1a vmlinux-lart #orig
2840152 123932 61960 3026044 2e2c7c vmlinux-lart #builtin-bswap
6473120 314840 5616016 12403976 bd4508 vmlinux-mxs #orig
6472586 314848 5616016 12403450 bd42fa vmlinux-mxs #builtin-bswap
7419872 318372 379556 8117800 7bde28 vmlinux-imx_v6_v7 #orig
7419170 318364 379556 8117090 7bdb62 vmlinux-imx_v6_v7 #builtin-bswap
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
0 files changed, 0 insertions, 0 deletions