trace: replace WB_REASON_FOREIGN_FLUSH with a string

Now WB_REASON_FOREIGN_FLUSH is displayed as a number, maybe a
string is better.

v2: replace some space with tab.

Link: https://lkml.kernel.org/r/1619914347-21904-1-git-send-email-brookxu.cn@gmail.com
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 1efa463..840d1ba 100644 (file)
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -36,7 +36,8 @@
        EM( WB_REASON_PERIODIC,                 "periodic")             \
        EM( WB_REASON_LAPTOP_TIMER,             "laptop_timer")         \
        EM( WB_REASON_FS_FREE_SPACE,            "fs_free_space")        \
-       EMe(WB_REASON_FORKER_THREAD,            "forker_thread")
+       EM( WB_REASON_FORKER_THREAD,            "forker_thread")        \
+       EMe(WB_REASON_FOREIGN_FLUSH,            "foreign_flush")
 
 WB_WORK_REASON