Commit 716fa91d authored Feb 09, 2016 by Christophe Leroy Committed by Scott Wood Mar 11, 2016

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 <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>

parent 8478d7f0

arch/powerpc/kernel/misc_32.S

+2 −3

Original line number	Diff line number	Diff line
		@@ -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