From: Christophe Leroy Date: Tue, 9 Feb 2016 16:08:31 +0000 (+0100) Subject: powerpc32: small optimisation in flush_icache_range() X-Git-Tag: v4.14-rc1~3607^2~4^2~12 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=716fa91d19fb122a1392b362e85929e8385b1fd2;p=platform%2Fkernel%2Flinux-rpi.git powerpc32: small optimisation in flush_icache_range() Inlining of _dcache_range() functions has shown that the compiler does the same thing a bit better with one insn less Signed-off-by: Christophe Leroy Signed-off-by: Scott Wood --- diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 09e1e5d..3ec5a22 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -348,10 +348,9 @@ BEGIN_FTR_SECTION PURGE_PREFETCHED_INS blr /* for 601, do nothing */ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) - li r5,L1_CACHE_BYTES-1 - andc r3,r3,r5 + rlwinm r3,r3,0,0,31 - L1_CACHE_SHIFT subf r4,r3,r4 - add r4,r4,r5 + addi r4,r4,L1_CACHE_BYTES - 1 srwi. r4,r4,L1_CACHE_SHIFT beqlr mtctr r4