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authorVineet Gupta <vgupta@synopsys.com>2013-01-18 15:12:26 +0530
committerVineet Gupta <vgupta@synopsys.com>2013-02-15 23:16:16 +0530
commit10b1271875abb9d590c14fa6c8b24b0d6f768ca2 (patch)
tree6abcf7cd3c787eaec128fb428da11e0eea8f7c8b /arch/arc/kernel
parentfc7943d29e9f6f5f6d4b111120b66ec86501673e (diff)
downloadvexpress-lsk-10b1271875abb9d590c14fa6c8b24b0d6f768ca2.tar.gz
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')
-rw-r--r--arch/arc/kernel/smp.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index 8ee010fdbc1..3af3e06dcf0 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