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-rw-r--r--include/linux/blk-iopoll.h41
-rw-r--r--include/linux/interrupt.h1
2 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/blk-iopoll.h b/include/linux/blk-iopoll.h
new file mode 100644
index 00000000000..b2e1739a2e7
--- /dev/null
+++ b/include/linux/blk-iopoll.h
@@ -0,0 +1,41 @@
+#ifndef BLK_IOPOLL_H
+#define BLK_IOPOLL_H
+
+struct blk_iopoll;
+typedef int (blk_iopoll_fn)(struct blk_iopoll *, int);
+
+struct blk_iopoll {
+ struct list_head list;
+ unsigned long state;
+ unsigned long data;
+ int weight;
+ int max;
+ blk_iopoll_fn *poll;
+};
+
+enum {
+ IOPOLL_F_SCHED = 0,
+ IOPOLL_F_DISABLE = 1,
+};
+
+static inline int blk_iopoll_sched_prep(struct blk_iopoll *iop)
+{
+ return !test_bit(IOPOLL_F_DISABLE, &iop->state) &&
+ !test_and_set_bit(IOPOLL_F_SCHED, &iop->state);
+}
+
+static inline int blk_iopoll_disable_pending(struct blk_iopoll *iop)
+{
+ return test_bit(IOPOLL_F_DISABLE, &iop->state);
+}
+
+extern void blk_iopoll_sched(struct blk_iopoll *);
+extern void blk_iopoll_init(struct blk_iopoll *, int, blk_iopoll_fn *);
+extern void blk_iopoll_complete(struct blk_iopoll *);
+extern void __blk_iopoll_complete(struct blk_iopoll *);
+extern void blk_iopoll_enable(struct blk_iopoll *);
+extern void blk_iopoll_disable(struct blk_iopoll *);
+
+extern int blk_iopoll_enabled;
+
+#endif
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 35e7df1e9f3..edd8d5c9039 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -344,6 +344,7 @@ enum
NET_TX_SOFTIRQ,
NET_RX_SOFTIRQ,
BLOCK_SOFTIRQ,
+ BLOCK_IOPOLL_SOFTIRQ,
TASKLET_SOFTIRQ,
SCHED_SOFTIRQ,
HRTIMER_SOFTIRQ,