kernel/linux.git/tools/testing/selftests/ublk/utils.h, branch linux-7.0.y

selftests: ublk: add batch buffer management infrastructure

2026-01-23T03:05:41+00:00

Add the foundational infrastructure for UBLK_F_BATCH_IO buffer management including: - Allocator utility functions for small sized per-thread allocation - Batch buffer allocation and deallocation functions - Buffer index management for commit buffers - Thread state management for batch I/O mode - Buffer size calculation based on device features This prepares the groundwork for handling batch I/O commands by establishing the buffer management layer needed for UBLK_U_IO_PREP_IO_CMDS and UBLK_U_IO_COMMIT_IO_CMDS operations. The allocator uses CPU sets for efficient per-thread buffer tracking, and commit buffers are pre-allocated with 2 buffers per thread to handle overlapping command operations. Signed-off-by: Ming Lei Signed-off-by: Jens Axboe

selftests: ublk: replace assert() with ublk_assert()

2026-01-23T03:05:41+00:00

Replace assert() with ublk_assert() since it is often triggered in daemon, and we may get nothing shown in terminal. Add ublk_assert(), so we can log something to syslog when assert() is triggered. Signed-off-by: Ming Lei Signed-off-by: Jens Axboe

selftests: centralise maybe-unused definition in kselftest.h

2025-09-13T23:55:16+00:00

Several selftests subdirectories duplicated the define __maybe_unused, leading to redundant code. Move to kselftest.h header and remove other definitions. This addresses the duplication noted in the proc-pid-vm warning fix Link: https://lkml.kernel.org/r/20250821101159.2238-1-reddybalavignesh9979@gmail.com Signed-off-by: Bala-Vignesh-Reddy Suggested-by: Andrew Morton Link:https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Acked-by: SeongJae Park Reviewed-by: Ming Lei Acked-by: Mickal Salan [landlock] Cc: Shuah Khan Signed-off-by: Andrew Morton

selftests: ublk: add utils.h

2025-07-15T14:04:17+00:00

Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250713143415.2857561-18-ming.lei@redhat.com Signed-off-by: Jens Axboe