diff options
Diffstat (limited to 'arch/parisc/kernel/cache.c')
| -rw-r--r-- | arch/parisc/kernel/cache.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index c263301648f3..977f0a4f5ecf 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -393,6 +393,15 @@ void __init parisc_setup_cache_timing(void) /* calculate TLB flush threshold */ + /* On SMP machines, skip the TLB measure of kernel text which + * has been mapped as huge pages. */ + if (num_online_cpus() > 1 && !parisc_requires_coherency()) { + threshold = max(cache_info.it_size, cache_info.dt_size); + threshold *= PAGE_SIZE; + threshold /= num_online_cpus(); + goto set_tlb_threshold; + } + alltime = mfctl(16); flush_tlb_all(); alltime = mfctl(16) - alltime; @@ -411,6 +420,8 @@ void __init parisc_setup_cache_timing(void) alltime, size, rangetime); threshold = PAGE_ALIGN(num_online_cpus() * size * alltime / rangetime); + +set_tlb_threshold: if (threshold) parisc_tlb_flush_threshold = threshold; printk(KERN_INFO "TLB flush threshold set to %lu KiB\n", |