linux-kernel - Re: [PATCH v3 0/5] memblock tests: add tests for memblock_alloc_exact_nid

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Date:   Mon, 31 Oct 2022 10:43:24 +0200
From:   Mike Rapoport <rppt@...nel.org>
To:     Rebecca Mckeever <remckee0@...il.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        David Hildenbrand <david@...hat.com>
Subject: Re: [PATCH v3 0/5] memblock tests: add tests for
 memblock_alloc_exact_nid_raw

Hi Rebecca,

On Mon, Oct 31, 2022 at 12:00:06AM -0500, Rebecca Mckeever wrote:
> Hi Mike,
> 
> I noticed that the memblock tree has been updated since I sent this
> patch set. Do you want me to send an updated patch set applied on top of
> the current tree?

No need, the only actual conflict is in TODO, I'll fix it while applying.
 
> On Wed, Oct 19, 2022 at 01:34:07PM -0500, Rebecca Mckeever wrote:
> > These patches add tests for memblock_alloc_exact_nid_raw(). There are two
> > sets of tests: range tests and NUMA tests. The range tests use a normal
> > (i.e., UMA) simulated physical memory and set the nid to NUMA_NO_NODE. The
> > NUMA tests use a simulated physical memory that is set up with multiple
> > NUMA nodes. Additionally, most of the NUMA tests set nid != NUMA_NO_NODE.
> > 
> > For the range tests, the TEST_F_EXACT flag is used to run the same set of
> > range tests used for memblock_alloc_try_nid_raw(). The NUMA tests have the
> > same setup as the corresponding test for memblock_alloc_try_nid_raw(), but
> > several of the memblock_alloc_exact_nid_raw() tests fail to allocate
> > memory in setups where the memblock_alloc_try_nid_raw() test would
> > allocate memory. Also, some memblock_alloc_exact_nid_raw() tests drop the
> > lower limit of the requested range in order to allocate within the
> > requested node, but the same setup in a memblock_alloc_try_nid_raw() test
> > allocates within the requested range.
> > 
> > ---
> > Changelog
> > 
> > v1 -> v2
> > PATCH 0:
> > - Add missing memblock_alloc_exact_nid_raw to subject line
> > 
> > v2 -> v3
> > Based on feedback from David Hildenbrand:
> > PATCH 1:
> > - alloc_nid_api.c, alloc_nid_api.h, common.h:
> >     + Add TEST_F_EXACT flag so that tests in alloc_nid_api.c can be run
> >       with that flag to test memblock_alloc_exact_nid_raw()
> > - alloc_exact_nid_api.c:
> >     + Update to run range tests in alloc_nid_api.c with TEST_F_EXACT flag
> >       instead of using a separate set of tests
> > - alloc_nid_api.c:
> >     + Rename tests and other functions by removing "_try" so that the
> >       function names are general enough to refer to any of the
> >       memblock_alloc_*nid*() functions of the memblock API
> > ---
> > 
> > Rebecca Mckeever (5):
> >   memblock tests: introduce range tests for memblock_alloc_exact_nid_raw
> >   memblock tests: add top-down NUMA tests for
> >     memblock_alloc_exact_nid_raw
> >   memblock tests: add bottom-up NUMA tests for
> >     memblock_alloc_exact_nid_raw
> >   memblock tests: add generic NUMA tests for
> >     memblock_alloc_exact_nid_raw
> >   memblock tests: remove completed TODO item
> > 
> >  tools/testing/memblock/Makefile               |    2 +-
> >  tools/testing/memblock/TODO                   |    7 +-
> >  tools/testing/memblock/main.c                 |    2 +
> >  .../memblock/tests/alloc_exact_nid_api.c      | 1113 +++++++++++++++++
> >  .../memblock/tests/alloc_exact_nid_api.h      |   25 +
> >  tools/testing/memblock/tests/alloc_nid_api.c  |  542 ++++----
> >  tools/testing/memblock/tests/alloc_nid_api.h  |    1 +
> >  tools/testing/memblock/tests/common.h         |    2 +
> >  8 files changed, 1425 insertions(+), 269 deletions(-)
> >  create mode 100644 tools/testing/memblock/tests/alloc_exact_nid_api.c
> >  create mode 100644 tools/testing/memblock/tests/alloc_exact_nid_api.h
> > 
> > -- 
> > 2.25.1
> > 
> Thanks,
> Rebecca

-- 
Sincerely yours,
Mike.