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Diffstat (limited to 'arch/blackfin/mach-common/smp.c')
-rw-r--r--arch/blackfin/mach-common/smp.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index 3b8ebaee77f..61840059dfa 100644
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -144,7 +144,7 @@ static void ipi_call_function(unsigned int cpu, struct ipi_message *msg)
static irqreturn_t ipi_handler(int irq, void *dev_instance)
{
- struct ipi_message *msg, *mg;
+ struct ipi_message *msg;
struct ipi_message_queue *msg_queue;
unsigned int cpu = smp_processor_id();
@@ -154,7 +154,8 @@ static irqreturn_t ipi_handler(int irq, void *dev_instance)
msg_queue->count++;
spin_lock(&msg_queue->lock);
- list_for_each_entry_safe(msg, mg, &msg_queue->head, list) {
+ while (!list_empty(&msg_queue->head)) {
+ msg = list_entry(msg_queue->head.next, typeof(*msg), list);
list_del(&msg->list);
switch (msg->type) {
case BFIN_IPI_RESCHEDULE:
@@ -221,7 +222,7 @@ int smp_call_function(void (*func)(void *info), void *info, int wait)
for_each_cpu_mask(cpu, callmap) {
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_irqsave(&msg_queue->lock, flags);
- list_add(&msg->list, &msg_queue->head);
+ list_add_tail(&msg->list, &msg_queue->head);
spin_unlock_irqrestore(&msg_queue->lock, flags);
platform_send_ipi_cpu(cpu);
}
@@ -261,7 +262,7 @@ int smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_irqsave(&msg_queue->lock, flags);
- list_add(&msg->list, &msg_queue->head);
+ list_add_tail(&msg->list, &msg_queue->head);
spin_unlock_irqrestore(&msg_queue->lock, flags);
platform_send_ipi_cpu(cpu);
@@ -292,7 +293,7 @@ void smp_send_reschedule(int cpu)
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_irqsave(&msg_queue->lock, flags);
- list_add(&msg->list, &msg_queue->head);
+ list_add_tail(&msg->list, &msg_queue->head);
spin_unlock_irqrestore(&msg_queue->lock, flags);
platform_send_ipi_cpu(cpu);
@@ -320,7 +321,7 @@ void smp_send_stop(void)
for_each_cpu_mask(cpu, callmap) {
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_irqsave(&msg_queue->lock, flags);
- list_add(&msg->list, &msg_queue->head);
+ list_add_tail(&msg->list, &msg_queue->head);
spin_unlock_irqrestore(&msg_queue->lock, flags);
platform_send_ipi_cpu(cpu);
}
@@ -468,6 +469,17 @@ void smp_icache_flush_range_others(unsigned long start, unsigned long end)
}
EXPORT_SYMBOL_GPL(smp_icache_flush_range_others);
+#ifdef __ARCH_SYNC_CORE_ICACHE
+void resync_core_icache(void)
+{
+ unsigned int cpu = get_cpu();
+ blackfin_invalidate_entire_icache();
+ ++per_cpu(cpu_data, cpu).icache_invld_count;
+ put_cpu();
+}
+EXPORT_SYMBOL(resync_core_icache);
+#endif
+
#ifdef __ARCH_SYNC_CORE_DCACHE
unsigned long barrier_mask __attribute__ ((__section__(".l2.bss")));