diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 15:12:26 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-15 23:16:16 +0530 |
| commit | 10b1271875abb9d590c14fa6c8b24b0d6f768ca2 (patch) | |
| tree | 6abcf7cd3c787eaec128fb428da11e0eea8f7c8b /arch/arc/kernel/smp.c | |
| parent | fc7943d29e9f6f5f6d4b111120b66ec86501673e (diff) | |
ARC: [Review] Multi-platform image #7: SMP common code to use callbacks
This again is for switch from singleton platform SMP API to
multi-platform paradigm
Platform code is not yet setup to populate the callbacks, that happens
in next commit
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc/kernel/smp.c')
| -rw-r--r-- | arch/arc/kernel/smp.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c index 8ee010fdbc18..3af3e06dcf02 100644 --- a/arch/arc/kernel/smp.c +++ b/arch/arc/kernel/smp.c @@ -37,6 +37,8 @@ arch_spinlock_t smp_atomic_ops_lock = __ARCH_SPIN_LOCK_UNLOCKED; arch_spinlock_t smp_bitops_lock = __ARCH_SPIN_LOCK_UNLOCKED; +struct plat_smp_ops plat_smp_ops; + /* XXX: per cpu ? Only needed once in early seconday boot */ struct task_struct *secondary_idle_tsk; @@ -105,6 +107,11 @@ void __attribute__((weak)) arc_platform_smp_wait_to_boot(int cpu) " b 1b \n"); } +const char *arc_platform_smp_cpuinfo(void) +{ + return plat_smp_ops.info; +} + /* * The very first "C" code executed by secondary * Called from asm stub in head.S @@ -156,7 +163,8 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle) pr_info("Idle Task [%d] %p", cpu, idle); pr_info("Trying to bring up CPU%u ...\n", cpu); - arc_platform_smp_wakeup_cpu(cpu, + if (plat_smp_ops.cpu_kick) + plat_smp_ops.cpu_kick(cpu, (unsigned long)first_lines_of_secondary); /* wait for 1 sec after kicking the secondary */ @@ -225,7 +233,8 @@ static void ipi_send_msg(const struct cpumask *callmap, enum ipi_msg_type msg) } /* Call the platform specific cross-CPU call function */ - arc_platform_ipi_send(callmap); + if (plat_smp_ops.ipi_send) + plat_smp_ops.ipi_send((void *)callmap); local_irq_restore(flags); } @@ -299,7 +308,8 @@ irqreturn_t do_IPI(int irq, void *dev_id) struct ipi_data *ipi = &per_cpu(ipi_data, cpu); unsigned long ops; - arc_platform_ipi_clear(cpu, irq); + if (plat_smp_ops.ipi_clear) + plat_smp_ops.ipi_clear(cpu, irq); /* * XXX: is this loop really needed |