[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/block/blk-exec.c b/src/kernel/linux/v4.14/block/blk-exec.c
new file mode 100644
index 0000000..5c0f3dc
--- /dev/null
+++ b/src/kernel/linux/v4.14/block/blk-exec.c
@@ -0,0 +1,110 @@
+/*
+ * Functions related to setting various queue properties from drivers
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/bio.h>
+#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
+#include <linux/sched/sysctl.h>
+
+#include "blk.h"
+#include "blk-mq-sched.h"
+
+/**
+ * blk_end_sync_rq - executes a completion event on a request
+ * @rq: request to complete
+ * @error: end I/O status of the request
+ */
+static void blk_end_sync_rq(struct request *rq, blk_status_t error)
+{
+ struct completion *waiting = rq->end_io_data;
+
+ rq->end_io_data = NULL;
+
+ /*
+ * complete last, if this is a stack request the process (and thus
+ * the rq pointer) could be invalid right after this complete()
+ */
+ complete(waiting);
+}
+
+/**
+ * blk_execute_rq_nowait - insert a request into queue for execution
+ * @q: queue to insert the request in
+ * @bd_disk: matching gendisk
+ * @rq: request to insert
+ * @at_head: insert request at head or tail of queue
+ * @done: I/O completion handler
+ *
+ * Description:
+ * Insert a fully prepared request at the back of the I/O scheduler queue
+ * for execution. Don't wait for completion.
+ *
+ * Note:
+ * This function will invoke @done directly if the queue is dead.
+ */
+void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
+ struct request *rq, int at_head,
+ rq_end_io_fn *done)
+{
+ int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
+
+ WARN_ON(irqs_disabled());
+ WARN_ON(!blk_rq_is_passthrough(rq));
+
+ rq->rq_disk = bd_disk;
+ rq->end_io = done;
+
+ /*
+ * don't check dying flag for MQ because the request won't
+ * be reused after dying flag is set
+ */
+ if (q->mq_ops) {
+ blk_mq_sched_insert_request(rq, at_head, true, false, false);
+ return;
+ }
+
+ spin_lock_irq(q->queue_lock);
+
+ if (unlikely(blk_queue_dying(q))) {
+ rq->rq_flags |= RQF_QUIET;
+ __blk_end_request_all(rq, BLK_STS_IOERR);
+ spin_unlock_irq(q->queue_lock);
+ return;
+ }
+
+ __elv_add_request(q, rq, where);
+ __blk_run_queue(q);
+ spin_unlock_irq(q->queue_lock);
+}
+EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
+
+/**
+ * blk_execute_rq - insert a request into queue for execution
+ * @q: queue to insert the request in
+ * @bd_disk: matching gendisk
+ * @rq: request to insert
+ * @at_head: insert request at head or tail of queue
+ *
+ * Description:
+ * Insert a fully prepared request at the back of the I/O scheduler queue
+ * for execution and wait for completion.
+ */
+void blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
+ struct request *rq, int at_head)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+ unsigned long hang_check;
+
+ rq->end_io_data = &wait;
+ blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
+
+ /* Prevent hang_check timer from firing at us during very long I/O */
+ hang_check = sysctl_hung_task_timeout_secs;
+ if (hang_check)
+ while (!wait_for_completion_io_timeout(&wait, hang_check * (HZ/2)));
+ else
+ wait_for_completion_io(&wait);
+}
+EXPORT_SYMBOL(blk_execute_rq);