diff options
Diffstat (limited to 'arch/parisc/kernel/cache.c')
| -rw-r--r-- | arch/parisc/kernel/cache.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 804880efa11e..a82b3eaa5398 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -29,9 +29,9 @@ #include <asm/sections.h> #include <asm/shmparam.h> -int split_tlb __read_mostly; -int dcache_stride __read_mostly; -int icache_stride __read_mostly; +int split_tlb __ro_after_init; +int dcache_stride __ro_after_init; +int icache_stride __ro_after_init; EXPORT_SYMBOL(dcache_stride); void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); @@ -40,16 +40,23 @@ void purge_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); void flush_icache_page_asm(unsigned long phys_addr, unsigned long vaddr); -/* On some machines (e.g. ones with the Merced bus), there can be +/* On some machines (i.e., ones with the Merced bus), there can be * only a single PxTLB broadcast at a time; this must be guaranteed - * by software. We put a spinlock around all TLB flushes to - * ensure this. + * by software. We need a spinlock around all TLB flushes to ensure + * this. */ -DEFINE_SPINLOCK(pa_tlb_lock); +DEFINE_SPINLOCK(pa_tlb_flush_lock); -struct pdc_cache_info cache_info __read_mostly; +/* Swapper page setup lock. */ +DEFINE_SPINLOCK(pa_swapper_pg_lock); + +#if defined(CONFIG_64BIT) && defined(CONFIG_SMP) +int pa_serialize_tlb_flushes __ro_after_init; +#endif + +struct pdc_cache_info cache_info __ro_after_init; #ifndef CONFIG_PA20 -static struct pdc_btlb_info btlb_info __read_mostly; +static struct pdc_btlb_info btlb_info __ro_after_init; #endif #ifdef CONFIG_SMP @@ -374,10 +381,10 @@ EXPORT_SYMBOL(flush_data_cache_local); EXPORT_SYMBOL(flush_kernel_icache_range_asm); #define FLUSH_THRESHOLD 0x80000 /* 0.5MB */ -static unsigned long parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD; +static unsigned long parisc_cache_flush_threshold __ro_after_init = FLUSH_THRESHOLD; #define FLUSH_TLB_THRESHOLD (16*1024) /* 16 KiB minimum TLB threshold */ -static unsigned long parisc_tlb_flush_threshold __read_mostly = FLUSH_TLB_THRESHOLD; +static unsigned long parisc_tlb_flush_threshold __ro_after_init = FLUSH_TLB_THRESHOLD; void __init parisc_setup_cache_timing(void) { |