diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/smp.c | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 0317cce877c6..fbffd7e47ab8 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -44,10 +44,11 @@ #include <asm/mpic.h> #include <asm/vdso_datapage.h> #include <asm/cputhreads.h> +#include <asm/mpic.h> +#include <asm/xics.h> #include "plpar_wrappers.h" #include "pseries.h" -#include "xics.h" #include "offline_states.h" @@ -64,8 +65,8 @@ int smp_query_cpu_stopped(unsigned int pcpu) int qcss_tok = rtas_token("query-cpu-stopped-state"); if (qcss_tok == RTAS_UNKNOWN_SERVICE) { - printk(KERN_INFO "Firmware doesn't support " - "query-cpu-stopped-state\n"); + printk_once(KERN_INFO + "Firmware doesn't support query-cpu-stopped-state\n"); return QCSS_HARDWARE_ERROR; } @@ -112,10 +113,10 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) /* Fixup atomic count: it exited inside IRQ handler. */ task_thread_info(paca[lcpu].__current)->preempt_count = 0; - +#ifdef CONFIG_HOTPLUG_CPU if (get_cpu_current_state(lcpu) == CPU_STATE_INACTIVE) goto out; - +#endif /* * If the RTAS start-cpu token does not exist then presume the * cpu is already spinning. @@ -130,11 +131,12 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) return 0; } +#ifdef CONFIG_HOTPLUG_CPU out: +#endif return 1; } -#ifdef CONFIG_XICS static void __devinit smp_xics_setup_cpu(int cpu) { if (cpu != boot_cpuid) @@ -144,20 +146,18 @@ static void __devinit smp_xics_setup_cpu(int cpu) vpa_init(cpu); cpumask_clear_cpu(cpu, of_spin_mask); +#ifdef CONFIG_HOTPLUG_CPU set_cpu_current_state(cpu, CPU_STATE_ONLINE); set_default_offline_state(cpu); - +#endif } -#endif /* CONFIG_XICS */ -static void __devinit smp_pSeries_kick_cpu(int nr) +static int __devinit smp_pSeries_kick_cpu(int nr) { - long rc; - unsigned long hcpuid; BUG_ON(nr < 0 || nr >= NR_CPUS); if (!smp_startup_cpu(nr)) - return; + return -ENOENT; /* * The processor is currently spinning, waiting for the @@ -165,16 +165,22 @@ static void __devinit smp_pSeries_kick_cpu(int nr) * the processor will continue on to secondary_start */ paca[nr].cpu_start = 1; - +#ifdef CONFIG_HOTPLUG_CPU set_preferred_offline_state(nr, CPU_STATE_ONLINE); if (get_cpu_current_state(nr) == CPU_STATE_INACTIVE) { + long rc; + unsigned long hcpuid; + hcpuid = get_hard_smp_processor_id(nr); rc = plpar_hcall_norets(H_PROD, hcpuid); if (rc != H_SUCCESS) printk(KERN_ERR "Error: Prod to wake up processor %d " "Ret= %ld\n", nr, rc); } +#endif + + return 0; } static int smp_pSeries_cpu_bootable(unsigned int nr) @@ -192,23 +198,22 @@ static int smp_pSeries_cpu_bootable(unsigned int nr) return 1; } -#ifdef CONFIG_MPIC + static struct smp_ops_t pSeries_mpic_smp_ops = { .message_pass = smp_mpic_message_pass, .probe = smp_mpic_probe, .kick_cpu = smp_pSeries_kick_cpu, .setup_cpu = smp_mpic_setup_cpu, }; -#endif -#ifdef CONFIG_XICS + static struct smp_ops_t pSeries_xics_smp_ops = { - .message_pass = smp_xics_message_pass, - .probe = smp_xics_probe, + .message_pass = smp_muxed_ipi_message_pass, + .cause_ipi = NULL, /* Filled at runtime by xics_smp_probe() */ + .probe = xics_smp_probe, .kick_cpu = smp_pSeries_kick_cpu, .setup_cpu = smp_xics_setup_cpu, .cpu_bootable = smp_pSeries_cpu_bootable, }; -#endif /* This is called very early */ static void __init smp_init_pseries(void) @@ -240,14 +245,12 @@ static void __init smp_init_pseries(void) pr_debug(" <- smp_init_pSeries()\n"); } -#ifdef CONFIG_MPIC void __init smp_init_pseries_mpic(void) { smp_ops = &pSeries_mpic_smp_ops; smp_init_pseries(); } -#endif void __init smp_init_pseries_xics(void) { |