diff options
Diffstat (limited to 'arch/mips/kernel/smp.c')
| -rw-r--r-- | arch/mips/kernel/smp.c | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 63989e9df4f9..1e5dfc28294a 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -37,7 +37,6 @@ #include <asm/processor.h> #include <asm/system.h> #include <asm/mmu_context.h> -#include <asm/smp.h> #include <asm/time.h> #ifdef CONFIG_MIPS_MT_SMTC @@ -56,6 +55,44 @@ EXPORT_SYMBOL(cpu_online_map); extern void __init calibrate_delay(void); extern void cpu_idle(void); +/* Number of TCs (or siblings in Intel speak) per CPU core */ +int smp_num_siblings = 1; +EXPORT_SYMBOL(smp_num_siblings); + +/* representing the TCs (or siblings in Intel speak) of each logical CPU */ +cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly; +EXPORT_SYMBOL(cpu_sibling_map); + +/* representing cpus for which sibling maps can be computed */ +static cpumask_t cpu_sibling_setup_map; + +static inline void set_cpu_sibling_map(int cpu) +{ + int i; + + cpu_set(cpu, cpu_sibling_setup_map); + + if (smp_num_siblings > 1) { + for_each_cpu_mask(i, cpu_sibling_setup_map) { + if (cpu_data[cpu].core == cpu_data[i].core) { + cpu_set(i, cpu_sibling_map[cpu]); + cpu_set(cpu, cpu_sibling_map[i]); + } + } + } else + cpu_set(cpu, cpu_sibling_map[cpu]); +} + +struct plat_smp_ops *mp_ops; + +__cpuinit void register_smp_ops(struct plat_smp_ops *ops) +{ + if (ops) + printk(KERN_WARNING "Overriding previous set SMP ops\n"); + + mp_ops = ops; +} + /* * First C code run on the secondary CPUs after being started up by * the master. @@ -72,7 +109,7 @@ asmlinkage __cpuinit void start_secondary(void) cpu_report(); per_cpu_trap_init(); mips_clockevent_init(); - prom_init_secondary(); + mp_ops->init_secondary(); /* * XXX parity protection should be folded in here when it's converted @@ -84,7 +121,8 @@ asmlinkage __cpuinit void start_secondary(void) cpu = smp_processor_id(); cpu_data[cpu].udelay_val = loops_per_jiffy; - prom_smp_finish(); + mp_ops->smp_finish(); + set_cpu_sibling_map(cpu); cpu_set(cpu, cpu_callin_map); @@ -155,7 +193,7 @@ int smp_call_function_mask(cpumask_t mask, void (*func) (void *info), smp_mb(); /* Send a message to all other CPUs and wait for them to respond */ - core_send_ipi_mask(mask, SMP_CALL_FUNCTION); + mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION); /* Wait for response */ /* FIXME: lock-up detection, backtrace on lock-up */ @@ -249,7 +287,7 @@ void smp_send_stop(void) void __init smp_cpus_done(unsigned int max_cpus) { - prom_cpus_done(); + mp_ops->cpus_done(); } /* called from main before smp_init() */ @@ -257,7 +295,8 @@ void __init smp_prepare_cpus(unsigned int max_cpus) { init_new_context(current, &init_mm); current_thread_info()->cpu = 0; - plat_prepare_cpus(max_cpus); + mp_ops->prepare_cpus(max_cpus); + set_cpu_sibling_map(0); #ifndef CONFIG_HOTPLUG_CPU cpu_present_map = cpu_possible_map; #endif @@ -295,7 +334,7 @@ int __cpuinit __cpu_up(unsigned int cpu) if (IS_ERR(idle)) panic(KERN_ERR "Fork failed for CPU %d", cpu); - prom_boot_secondary(cpu, idle); + mp_ops->boot_secondary(cpu, idle); /* * Trust is futile. We should really have timeouts ... |