diff options
Diffstat (limited to 'arch/mips/kernel/smp-bmips.c')
| -rw-r--r-- | arch/mips/kernel/smp-bmips.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c index 9058e9dcf080..b3dbf9ecb0d6 100644 --- a/arch/mips/kernel/smp-bmips.c +++ b/arch/mips/kernel/smp-bmips.c @@ -26,9 +26,9 @@ #include <linux/bug.h> #include <linux/kernel.h> #include <linux/kexec.h> +#include <linux/irq.h> #include <asm/time.h> -#include <asm/pgtable.h> #include <asm/processor.h> #include <asm/bootinfo.h> #include <asm/cacheflush.h> @@ -54,6 +54,8 @@ static void bmips_set_reset_vec(int cpu, u32 val); #ifdef CONFIG_SMP +#include <asm/smp.h> + /* initial $sp, $gp - used by arch/mips/kernel/bmips_vec.S */ unsigned long bmips_smp_boot_sp; unsigned long bmips_smp_boot_gp; @@ -135,17 +137,24 @@ static void __init bmips_smp_setup(void) if (!board_ebase_setup) board_ebase_setup = &bmips_ebase_setup; - __cpu_number_map[boot_cpu] = 0; - __cpu_logical_map[0] = boot_cpu; + if (max_cpus > 1) { + __cpu_number_map[boot_cpu] = 0; + __cpu_logical_map[0] = boot_cpu; - for (i = 0; i < max_cpus; i++) { - if (i != boot_cpu) { - __cpu_number_map[i] = cpu; - __cpu_logical_map[cpu] = i; - cpu++; + for (i = 0; i < max_cpus; i++) { + if (i != boot_cpu) { + __cpu_number_map[i] = cpu; + __cpu_logical_map[cpu] = i; + cpu++; + } + set_cpu_possible(i, 1); + set_cpu_present(i, 1); } - set_cpu_possible(i, 1); - set_cpu_present(i, 1); + } else { + __cpu_number_map[0] = boot_cpu; + __cpu_logical_map[0] = 0; + set_cpu_possible(0, 1); + set_cpu_present(0, 1); } } @@ -240,6 +249,8 @@ static int bmips_boot_secondary(int cpu, struct task_struct *idle) */ static void bmips_init_secondary(void) { + bmips_cpu_setup(); + switch (current_cpu_type()) { case CPU_BMIPS4350: case CPU_BMIPS4380: @@ -361,14 +372,11 @@ static int bmips_cpu_disable(void) { unsigned int cpu = smp_processor_id(); - if (cpu == 0) - return -EBUSY; - pr_info("SMP: CPU%d is offline\n", cpu); set_cpu_online(cpu, false); calculate_cpu_foreign_map(); - irq_cpu_offline(); + irq_migrate_all_off_this_cpu(); clear_c0_status(IE_IRQ5); local_flush_tlb_all(); @@ -384,6 +392,7 @@ static void bmips_cpu_die(unsigned int cpu) void __ref play_dead(void) { idle_task_exit(); + cpuhp_ap_report_dead(); /* flush data cache */ _dma_cache_wback_inv(0, ~0); @@ -407,6 +416,8 @@ void __ref play_dead(void) " wait\n" " j bmips_secondary_reentry\n" : : : "memory"); + + BUG(); } #endif /* CONFIG_HOTPLUG_CPU */ @@ -423,7 +434,7 @@ const struct plat_smp_ops bmips43xx_smp_ops = { .cpu_disable = bmips_cpu_disable, .cpu_die = bmips_cpu_die, #endif -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE .kexec_nonboot_cpu = kexec_nonboot_cpu_jump, #endif }; @@ -440,7 +451,7 @@ const struct plat_smp_ops bmips5000_smp_ops = { .cpu_disable = bmips_cpu_disable, .cpu_die = bmips_cpu_die, #endif -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE .kexec_nonboot_cpu = kexec_nonboot_cpu_jump, #endif }; |