Make it easire to update jemalloc by moving the FreeBSD specific files
and the generated files into lib/libc. This allows us to regenerate them
more easily, and emphasizes a bit that we may have to regenerate stuff
from upstream.
This is necessary to also unthin the import from the vendor branch as
well (which will be needed to simplify the imports in the future since
we are trying to use contrib/jemalloc for two different things).
No functional change.
Sponsored by: Netflix
The more generated things that are in contrib/jemalloc tree, the more
chances for interference goes way up. So, move this file into our
lib/libc tree. I didn't add a 'generated file' line / info, but this is
funky enough I don't think we need that. We do add things to the man
page, and that should be tracked in the contrib/jemalloc tree to allow
better importing experience.
Sponsored by: Netflix
and allow to revert it back to 48 with WITHOUT_JEMALLOC_LG_VADDR_WIDE build
option.
Reviewed by: andrew, emaste
Sponsored by: Advanced Micro Devices (AMD)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D46686
Don't provide default linkage for jemalloc 3.0 compatability symbols.
We stopped declaring these interfaces with the introduction of jemalloc
4.0 prior to FreeBSD 11.0. Any code using them would have had to
declare them manually so stop declaring them and export the symbols
directly for compatability. Arguably they should be x86 only as they
were never declared on other Tier-1 architectures.
Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D46407
This will enable alternative mallocs to be included in the tree and
selected by setting LIBC_MALLOC. As there is only one today (jemalloc)
this option does nothing, but we expect to add other implementations
in the future. This will also reduce diffs to CheriBSD.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D41660
Create a stdlib/malloc to hold the definition of the malloc interface
(e.g., the Symbol.map file) and make jemalloc a subdirectory. This will
make it easier to integrate alternative allocators such as snmalloc
while making it clear that the current jemalloc symbols are the FreeBSD
API/ABI (for better or worse).
Suggested by: jrtc27
Reviewed by: jrtc27, emaste
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D41457
