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sh: do not perform IPI-based cache flush except on boards that need it 

Signed-off-by: Rich Felker <dalias@libc.org>
hifive-unleashed-5.1
Rich Felker 2016-02-15 18:36:33 +00:00
parent b4214e41b7
commit a1e262f6f1
1 changed files with 3 additions and 0 deletions
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3
arch/sh/mm/cache.c
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@ -42,6 +42,8 @@ static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
{
preempt_disable();
/* Needing IPI for cross-core flush is SHX3-specific. */
#ifdef CONFIG_CPU_SHX3
/*
* It's possible that this gets called early on when IRQs are
* still disabled due to ioremapping by the boot CPU, so don't
@ -49,6 +51,7 @@ static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
*/
if (num_online_cpus() > 1)
smp_call_function(func, info, wait);
#endif
func(info);