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| author | Ming Lei <ming.lei@redhat.com> | 2026-03-31 23:31:59 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-04-07 07:42:23 -0600 |
| commit | d4866503324c062f70dddfdd2e59957d335fc230 (patch) | |
| tree | ce3e855735b0c0d4c71c8216017b573d86848423 /tools/perf/scripts/python | |
| parent | 2f1e9468bdcba7e7572e16defd3c516f24281f14 (diff) | |
selftests/ublk: add hugetlbfs shmem_zc test for loop target
Add test_shmem_zc_02.sh which tests the UBLK_IO_F_SHMEM_ZC zero-copy
path on the loop target using a hugetlbfs shared buffer. Both kublk and
fio mmap the same hugetlbfs file with MAP_SHARED, sharing physical
pages. The kernel's PFN matching enables zero-copy — the loop target
reads/writes directly from the shared buffer to the backing file.
Uses standard fio --mem=mmaphuge:<path> (supported since fio 1.10),
no patched fio required.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://patch.msgid.link/20260331153207.3635125-9-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions