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powerpc: Rewrite 4xx flush_cache_instruction() in C

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Nothing prevents flush_cache_instruction() from being writen in C.

Do it to improve readability and maintainability.

This function is very small and isn't called from assembly,
make it static inline in asm/cacheflush.h

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/93d93fc69b4b3ad3ceba2fc0756333c0c0245bb7.1597384512.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-08-14 05:56:26 +00:00 • committed by Michael Ellerman
parent f663f33120
commit de39b19452
2 changed files with 9 additions and 6 deletions
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8
arch/powerpc/include/asm/cacheflush.h
View file

@ -98,7 +98,15 @@ static inline void invalidate_dcache_range(unsigned long start,
mb(); /* sync */
}
#ifdef CONFIG_4xx
static inline void flush_instruction_cache(void)
{
iccci((void *)KERNELBASE);
isync();
}
#else
void flush_instruction_cache(void);
#endif
#include <asm-generic/cacheflush.h>