blk_fill_rwbs function currently does not recognize REQ_POLLED I/O, it's not convenient to trace the I/O handling process on the HCTX_TYPE_POLL type hardware queue. Add a 'P' identifier to 'rwbs' to mark such I/O for tracing.
Signed-off-by: Yongpeng Yang <[email protected]> --- kernel/trace/blktrace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 8fd292d34d89..69b7857d0189 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1908,6 +1908,8 @@ void blk_fill_rwbs(char *rwbs, blk_opf_t opf) rwbs[i++] = 'S'; if (opf & REQ_META) rwbs[i++] = 'M'; + if (opf & REQ_POLLED) + rwbs[i++] = 'P'; rwbs[i] = '\0'; } -- 2.40.1
