[PATCH v2 0/7] tlsf: use 8-byte alignment for normal malloc allocations

[Sascha Hauer]

On Mon, Sep 11, 2023 at 05:24:26PM +0200, Ahmad Fatoum wrote:
> TLSF currently uses only 4-byte alignment on 32-bit platforms, which isn't
> enough for ldrd/strd on ARMv7. This series reworks TLSF a bit, so we always
> have at least 8 byte alignment.  dlmalloc already has 8 byte alignment
> minimum, so nothing to do there.
> 
> This has the added benefit of giving TLSF the same alignment as KASAN,
> which can make debugging easier.
> 
> v1 didn't actually manage to boot on an i.MX6, which v2 fixes. This
> also boots normally on i.MX8M. I suggest this going into next after
> v2023.09.0.
> 
> v1 -> v2:
>   - drop switch of test_ffs_fls to bselftest. This function should just
>     be replaced with barebox' own implementation in future
>   - keep block size a size_t and just ensure the block metadata is
>     correctly aligned.

Applied, thanks

Sascha

> 
> Ahmad Fatoum (7):
>   tlsf: turn static const variables into compiletime constant
>     expressions
>   tlsf: ensure malloc pool is aligned
>   tlsf: fix sizeof(size_t) == sizeof(void *) assumption
>   tlsf: give malloc 8-byte alignment on 32-bit as well
>   common: malloc: ensure alignment is always at least 8 byte
>   test: self: refactor to allow alignment check
>   test: self: malloc: fix memory leaks
> 
>  common/Kconfig         |  5 +++
>  common/dlmalloc.c      |  3 ++
>  common/dummy_malloc.c  |  2 +-
>  common/tlsf.c          | 43 ++++++++++---------
>  include/linux/bitops.h |  1 +
>  test/self/malloc.c     | 96 ++++++++++++++++++++++++++++++------------
>  6 files changed, 102 insertions(+), 48 deletions(-)
> 
> -- 
> 2.39.2
> 
> 
> 

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