Add TRACE_IOCB_STRINGS macro which can be used in the trace point patch to
print different flag values with meaningful string output.
Tested-by: Disha Goel <disgoel@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
---
include/linux/fs.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9ca3813f43e2..6903fc15987a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -340,6 +340,20 @@ enum rw_hint {
/* can use bio alloc cache */
#define IOCB_ALLOC_CACHE (1 << 21)
+/* for use in trace events */
+#define TRACE_IOCB_STRINGS \
+ { IOCB_HIPRI, "HIPRI" }, \
+ { IOCB_DSYNC, "DSYNC" }, \
+ { IOCB_SYNC, "SYNC" }, \
+ { IOCB_NOWAIT, "NOWAIT" }, \
+ { IOCB_APPEND, "APPEND" }, \
+ { IOCB_EVENTFD, "EVENTD"}, \
+ { IOCB_DIRECT, "DIRECT" }, \
+ { IOCB_WRITE, "WRITE" }, \
+ { IOCB_WAITQ, "WAITQ" }, \
+ { IOCB_NOIO, "NOIO" }, \
+ { IOCB_ALLOC_CACHE, "ALLOC_CACHE" }
+
struct kiocb {
struct file *ki_filp;
loff_t ki_pos;
--
2.39.2
