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-rw-r--r--arch/blackfin/mach-common/dpmc.c3
-rw-r--r--arch/blackfin/mach-common/smp.c22
2 files changed, 19 insertions, 6 deletions
diff --git a/arch/blackfin/mach-common/dpmc.c b/arch/blackfin/mach-common/dpmc.c
index 382099fd5561..5e4112e518a9 100644
--- a/arch/blackfin/mach-common/dpmc.c
+++ b/arch/blackfin/mach-common/dpmc.c
@@ -19,9 +19,6 @@
#define DRIVER_NAME "bfin dpmc"
-#define dprintk(msg...) \
- cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, DRIVER_NAME, msg)
-
struct bfin_dpmc_platform_data *pdata;
/**
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index 6e17a265c4d3..1fbd94c44457 100644
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -109,10 +109,23 @@ static void ipi_flush_icache(void *info)
struct blackfin_flush_data *fdata = info;
/* Invalidate the memory holding the bounds of the flushed region. */
- invalidate_dcache_range((unsigned long)fdata,
- (unsigned long)fdata + sizeof(*fdata));
+ blackfin_dcache_invalidate_range((unsigned long)fdata,
+ (unsigned long)fdata + sizeof(*fdata));
+
+ /* Make sure all write buffers in the data side of the core
+ * are flushed before trying to invalidate the icache. This
+ * needs to be after the data flush and before the icache
+ * flush so that the SSYNC does the right thing in preventing
+ * the instruction prefetcher from hitting things in cached
+ * memory at the wrong time -- it runs much further ahead than
+ * the pipeline.
+ */
+ SSYNC();
- flush_icache_range(fdata->start, fdata->end);
+ /* ipi_flaush_icache is invoked by generic flush_icache_range,
+ * so call blackfin arch icache flush directly here.
+ */
+ blackfin_icache_flush_range(fdata->start, fdata->end);
}
static void ipi_call_function(unsigned int cpu, struct ipi_message *msg)
@@ -164,6 +177,9 @@ static irqreturn_t ipi_handler_int1(int irq, void *dev_instance)
while (msg_queue->count) {
msg = &msg_queue->ipi_message[msg_queue->head];
switch (msg->type) {
+ case BFIN_IPI_RESCHEDULE:
+ scheduler_ipi();
+ break;
case BFIN_IPI_CALL_FUNC:
spin_unlock_irqrestore(&msg_queue->lock, flags);
ipi_call_function(cpu, msg);