kernel/tools/testing/selftests/ublk/trace/seq_io.bt, branch linux-rolling-stable

selftests: ublk: remove unused ios map in seq_io.bt

2025-12-12T19:50:40Z

The ios map populated by seq_io.bt is never read, so remove it. Signed-off-by: Caleb Sander Mateos Reviewed-by: Ming Lei Signed-off-by: Jens Axboe

selftests: ublk: correct last_rw map type in seq_io.bt

2025-12-12T19:50:40Z

The last_rw map is initialized with a value of 0 but later assigned the value args.sector + args.nr_sector, which has type sector_t = u64. bpftrace complains about the type mismatch between int64 and uint64: trace/seq_io.bt:18:3-59: ERROR: Type mismatch for @last_rw: trying to assign value of type 'uint64' when map already contains a value of type 'int64' @last_rw[$dev, str($2)] = (args.sector + args.nr_sector); Cast the initial value to uint64 so bpftrace will load the program. Signed-off-by: Caleb Sander Mateos Reviewed-by: Ming Lei Signed-off-by: Jens Axboe

selftests: ublk: add generic_01 for verifying sequential IO order

2025-03-22T14:35:08Z

block layer, ublk and io_uring might re-order IO in the past - plug - queue ublk io command via task work Add one test for verifying if sequential WRITE IO is dispatched in order. - null target is taken, so we can just observe io order from `tracepoint:block:block_rq_complete` which represents the dispatch order - WRITE IO is taken because READ may come from system-wide utility Cc: Uday Shankar Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250322093218.431419-2-ming.lei@redhat.com Signed-off-by: Jens Axboe