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authorRalf Baechle <ralf@linux-mips.org>2006-11-29 20:14:48 -0500
committerRalf Baechle <ralf@linux-mips.org>2006-11-29 20:14:48 -0500
commit617667ba724d46ffeccb88ee99e1379f29b0bfa7 (patch)
tree9a0ffd3f88a2c5fe063ef45d83d52552e51411a7 /arch
parent0550d9d13e02b30efa117d47fcadea450bb23d23 (diff)
[MIPS] Avoid dupliate D-cache flush on R400C / R4400 SC and MC variants.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/mm/c-r4k.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 0138cb2e456d..df04a315d830 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -381,17 +381,21 @@ static inline void local_r4k_flush_cache_mm(void * args)
381 if (!cpu_context(smp_processor_id(), mm)) 381 if (!cpu_context(smp_processor_id(), mm))
382 return; 382 return;
383 383
384 r4k_blast_dcache();
385
386 /* 384 /*
387 * Kludge alert. For obscure reasons R4000SC and R4400SC go nuts if we 385 * Kludge alert. For obscure reasons R4000SC and R4400SC go nuts if we
388 * only flush the primary caches but R10000 and R12000 behave sane ... 386 * only flush the primary caches but R10000 and R12000 behave sane ...
387 * R4000SC and R4400SC indexed S-cache ops also invalidate primary
388 * caches, so we can bail out early.
389 */ 389 */
390 if (current_cpu_data.cputype == CPU_R4000SC || 390 if (current_cpu_data.cputype == CPU_R4000SC ||
391 current_cpu_data.cputype == CPU_R4000MC || 391 current_cpu_data.cputype == CPU_R4000MC ||
392 current_cpu_data.cputype == CPU_R4400SC || 392 current_cpu_data.cputype == CPU_R4400SC ||
393 current_cpu_data.cputype == CPU_R4400MC) 393 current_cpu_data.cputype == CPU_R4400MC) {
394 r4k_blast_scache(); 394 r4k_blast_scache();
395 return;
396 }
397
398 r4k_blast_dcache();
395} 399}
396 400
397static void r4k_flush_cache_mm(struct mm_struct *mm) 401static void r4k_flush_cache_mm(struct mm_struct *mm)