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Commit 0550d9d1 authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Ralf Baechle
Browse files

[MIPS] Remove redundant r4k_blast_icache() calls 



r4k_flush_cache_all() and r4k_flush_cache_mm() case: these are noop if
the CPU did not have dc_aliases.  It would mean we do not need to care
about icache here.

r4k_flush_cache_range case: if r4k_flush_cache_mm() did not need to
care about icache, it would be same for this function.

Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent e5679882

arch/mips/mm/c-r4k.c

+4 −8
Original line number Diff line number Diff line
@@ -323,7 +323,6 @@ static void __init r4k_blast_scache_setup(void) 
static inline void local_r4k_flush_cache_all(void * args)

{

	r4k_blast_dcache();

	r4k_blast_icache();

}



static void r4k_flush_cache_all(void)
@@ -359,21 +358,19 @@ static void r4k___flush_cache_all(void) 
static inline void local_r4k_flush_cache_range(void * args)

{

	struct vm_area_struct *vma = args;

	int exec;



	if (!(cpu_context(smp_processor_id(), vma->vm_mm)))

		return;



	exec = vma->vm_flags & VM_EXEC;

	if (cpu_has_dc_aliases || exec)

	r4k_blast_dcache();

	if (exec)

		r4k_blast_icache();

}



static void r4k_flush_cache_range(struct vm_area_struct *vma,

	unsigned long start, unsigned long end)

{

	if (!cpu_has_dc_aliases)

		return;



	r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);

}
@@ -385,7 +382,6 @@ static inline void local_r4k_flush_cache_mm(void * args) 
		return;



	r4k_blast_dcache();

	r4k_blast_icache();



	/*

	 * Kludge alert.  For obscure reasons R4000SC and R4400SC go nuts if we