Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
---
kernel/trace/blktrace.c | 57 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 3801809a77d5..49ae01d4e4d6 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1813,6 +1813,62 @@ static void fill_rwbs(char *rwbs, const struct blk_io_trace *t)
rwbs[i] = '\0';
}
+static void fill_rwbs_ext(char *rwbs, const struct blk_io_trace_ext *t)
+{
+ int i = 0;
+ int tc = t->action >> BLK_TC_SHIFT_EXT;
+
+ if ((t->action & ~__BLK_TN_CGROUP) == BLK_TN_MESSAGE_EXT) {
+ rwbs[i++] = 'N';
+ goto out;
+ }
+
+ if (tc & BLK_TC_FLUSH)
+ rwbs[i++] = 'F';
+
+ if (tc & BLK_TC_DISCARD)
+ rwbs[i++] = 'D';
+ else if ((tc & BLK_TC_WRITE_ZEROES)) {
+ rwbs[i++] = 'W';
+ rwbs[i++] = 'Z';
+ } else if ((tc & BLK_TC_ZONE_RESET)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'R';
+ } else if ((tc & BLK_TC_ZONE_RESET_ALL)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'R';
+ rwbs[i++] = 'A';
+ } else if ((tc & BLK_TC_ZONE_APPEND)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'A';
+ } else if ((tc & BLK_TC_ZONE_OPEN)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'O';
+ } else if ((tc & BLK_TC_ZONE_CLOSE)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'C';
+ } else if ((tc & BLK_TC_ZONE_FINISH)) {
+ rwbs[i++] = 'Z';
+ rwbs[i++] = 'F';
+ } else if (tc & BLK_TC_WRITE)
+ rwbs[i++] = 'W';
+ else if (t->bytes)
+ rwbs[i++] = 'R';
+ else
+ rwbs[i++] = 'N';
+
+ if (tc & BLK_TC_FUA)
+ rwbs[i++] = 'F';
+ if (tc & BLK_TC_AHEAD)
+ rwbs[i++] = 'A';
+ if (tc & BLK_TC_SYNC)
+ rwbs[i++] = 'S';
+ if (tc & BLK_TC_META)
+ rwbs[i++] = 'M';
+out:
+ rwbs[i] = '\0';
+}
+
static inline
const struct blk_io_trace *te_blk_io_trace(const struct trace_entry *ent)
{
@@ -2627,5 +2683,6 @@ void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes)
}
EXPORT_SYMBOL_GPL(blk_fill_rwbs);
+
#endif /* CONFIG_EVENT_TRACING */
--
2.22.1
