Cleanup: move to kernel style SPDX license identifiers

[lttng-modules.git] / instrumentation / events / lttng-module / block.h

diff --git a/instrumentation/events/lttng-module/block.h b/instrumentation/events/lttng-module/block.h
index 6526d3db93e059c649518ca99cd97136a47b2d3d..0dab9317cef6f729f310c0a7c45f9faf5fc0e836 100644 (file)
--- a/instrumentation/events/lttng-module/block.h
+++ b/instrumentation/events/lttng-module/block.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM block
 
@@ -33,7 +34,8 @@ enum {
 
 #endif /* _TRACE_BLOCK_DEF_ */
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) || \
+       LTTNG_SLE_KERNEL_RANGE(4,4,73,5,0,0, 4,4,114,92,0,0))
 
 #define lttng_req_op(rq)       req_op(rq)
 #define lttng_req_rw(rq)       ((rq)->cmd_flags)
@@ -848,7 +850,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq,
 
        TP_FIELDS(
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
-               ctf_integer(dev_t, dev, bio_dev(bio))
+               ctf_integer(dev_t, dev, bio ? bio_dev(bio) : 0)
 #else
                ctf_integer(dev_t, dev, bio ? bio->bi_bdev->bd_dev : 0)
 #endif
@@ -877,7 +879,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq,
 /**
  * block_getrq - get a free request entry in queue for block IO operations
  * @q: queue for operations
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
  * @rw: low bit indicates a read (%0) or a write (%1)
  *
  * A request struct for queue @q has been allocated to handle the
@@ -893,7 +895,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq, block_getrq,
 /**
  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
  * @q: queue for operation
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
  * @rw: low bit indicates a read (%0) or a write (%1)
  *
  * In the case where a request struct cannot be provided for queue @q