This patch adds new structure similar to struct blk_trace to support
block trace extensions.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
---
include/linux/blktrace_api.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 7bb2d8de9f30..83103c1194fb 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -29,6 +29,24 @@ struct blk_trace {
atomic_t dropped;
};
+struct blk_trace_ext {
+ int trace_state;
+ struct rchan *rchan;
+ unsigned long __percpu *sequence;
+ unsigned char __percpu *msg_data;
+ u64 act_mask;
+ u32 prio_mask;
+ u64 start_lba;
+ u64 end_lba;
+ u32 pid;
+ u32 dev;
+ struct dentry *dir;
+ struct dentry *dropped_file;
+ struct dentry *msg_file;
+ struct list_head running_ext_list;
+ atomic_t dropped;
+};
+
struct blkcg;
extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
--
2.19.1
