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| author |   Helge Deller <deller@gmx.de> | 2022-03-12 21:03:33 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2022-03-16 22:52:12 +0100 |
| commit | 0a575497691486a75bdc3ae551094432b0761a84 (patch) | |
| tree | f89b8c14334669e759965382cf3f43005199e978 /arch/parisc/include | |
| parent | parisc: Increase parisc_cache_flush_threshold setting (diff) | |
| download | linux-dev-0a575497691486a75bdc3ae551094432b0761a84.tar.xz linux-dev-0a575497691486a75bdc3ae551094432b0761a84.zip | |
parisc: Avoid calling SMP cache flush functions on cache-less machines
At least the qemu virtual machine does not provide D- and I-caches,
so skip triggering SMP irqs to flush caches on such machines.
Further optimize the caching code by using static branches and making
some functions static.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include')
| -rw-r--r-- | arch/parisc/include/asm/cacheflush.h | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h index 859b8a34adcf..e8b4a03343d3 100644 --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -9,16 +9,11 @@ /* The usual comment is "Caches aren't brain-dead on the <architecture>". * Unfortunately, that doesn't apply to PA-RISC. */ -/* Internal implementation */ -void flush_data_cache_local(void *); /* flushes local data-cache only */ -void flush_instruction_cache_local(void *); /* flushes local code-cache only */ -#ifdef CONFIG_SMP -void flush_data_cache(void); /* flushes data-cache only (all processors) */ -void flush_instruction_cache(void); /* flushes i-cache only (all processors) */ -#else -#define flush_data_cache() flush_data_cache_local(NULL) -#define flush_instruction_cache() flush_instruction_cache_local(NULL) -#endif +#include <linux/jump_label.h> + +DECLARE_STATIC_KEY_TRUE(parisc_has_cache); +DECLARE_STATIC_KEY_TRUE(parisc_has_dcache); +DECLARE_STATIC_KEY_TRUE(parisc_has_icache); #define flush_cache_dup_mm(mm) flush_cache_mm(mm) |