diff options
Diffstat (limited to 'arch/sparc64/kernel/smp.c')
-rw-r--r-- | arch/sparc64/kernel/smp.c | 48 |
1 files changed, 20 insertions, 28 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index c550bba3490a..40e40f968d61 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -44,6 +44,8 @@ extern void calibrate_delay(void); +int sparc64_multi_core __read_mostly; + /* Please don't make this stuff initdata!!! --DaveM */ unsigned char boot_cpu_id; @@ -51,6 +53,8 @@ cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE; cpumask_t phys_cpu_present_map __read_mostly = CPU_MASK_NONE; cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = CPU_MASK_NONE }; +cpumask_t cpu_core_map[NR_CPUS] __read_mostly = + { [0 ... NR_CPUS-1] = CPU_MASK_NONE }; static cpumask_t smp_commenced_mask; static cpumask_t cpu_callout_map; @@ -1159,32 +1163,6 @@ int setup_profiling_timer(unsigned int multiplier) return -EINVAL; } -static void __init smp_tune_scheduling(void) -{ - unsigned int smallest = ~0U; - int i; - - for (i = 0; i < NR_CPUS; i++) { - unsigned int val = cpu_data(i).ecache_size; - - if (val && val < smallest) - smallest = val; - } - - /* Any value less than 256K is nonsense. */ - if (smallest < (256U * 1024U)) - smallest = 256 * 1024; - - max_cache_size = smallest; - - if (smallest < 1U * 1024U * 1024U) - printk(KERN_INFO "Using max_cache_size of %uKB\n", - smallest / 1024U); - else - printk(KERN_INFO "Using max_cache_size of %uMB\n", - smallest / 1024U / 1024U); -} - /* Constrain the number of cpus to max_cpus. */ void __init smp_prepare_cpus(unsigned int max_cpus) { @@ -1202,7 +1180,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus) } cpu_data(boot_cpu_id).udelay_val = loops_per_jiffy; - smp_tune_scheduling(); } void __devinit smp_prepare_boot_cpu(void) @@ -1217,13 +1194,28 @@ void __devinit smp_fill_in_sib_core_maps(void) unsigned int j; if (cpu_data(i).core_id == 0) { - cpu_set(i, cpu_sibling_map[i]); + cpu_set(i, cpu_core_map[i]); continue; } for_each_possible_cpu(j) { if (cpu_data(i).core_id == cpu_data(j).core_id) + cpu_set(j, cpu_core_map[i]); + } + } + + for_each_possible_cpu(i) { + unsigned int j; + + if (cpu_data(i).proc_id == -1) { + cpu_set(i, cpu_sibling_map[i]); + continue; + } + + for_each_possible_cpu(j) { + if (cpu_data(i).proc_id == + cpu_data(j).proc_id) cpu_set(j, cpu_sibling_map[i]); } } |