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.
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
