Re: [PATCH v11 0/6] selftests/mm: separate GUP microbenchmarking from functional testing

From: Andrew Morton

Date: Fri Sep 18 2026 - 15:53:45 EST


On Fri, 18 Sep 2026 16:52:28 +0530 Sarthak Sharma <sarthak.sharma@xxxxxxx> wrote:

> gup_test.c currently serves two separate purposes: benchmarking
> (GUP_FAST_BENCHMARK, PIN_FAST_BENCHMARK and PIN_LONGTERM_BENCHMARK) and
> functional testing (GUP_BASIC_TEST, PIN_BASIC_TEST and
> DUMP_USER_PAGES_TEST). Keeping both in one program makes the functional
> tests harder to run and report individually, while run_vmtests.sh has to
> invoke the program repeatedly with different options.
>
> Separate these roles into tools/mm/gup_bench for benchmarking and
> tools/testing/selftests/mm/gup for functional testing. Move the shared
> file and hugepage helpers to tools/lib/mm/ so both programs can use them
> without duplicating the implementation.

Thanks, all queued up. Including [1/6]'s read_num() fix.