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jemalloc: set LG_VADDR to 64 on amd64

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(cherry picked from commit eade2001aa9d91440886de8359a4dec9edcde2a9)
This commit is contained in:
Konstantin Belousov 2024-09-17 00:09:03 +03:00
parent 7b8de6a84b
commit b90d68c9b2
4 changed files with 13 additions and 0 deletions
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4
contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
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@ -39,7 +39,11 @@
# define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec")))
#endif
#ifdef __amd64__
#ifdef _USE_LG_VADDR_WIDE
# define LG_VADDR 64
#else
# define LG_VADDR 48
#endif
# define LG_SIZEOF_PTR 3
# define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec")))
#endif

3
lib/libc/stdlib/malloc/jemalloc/Makefile.inc
View file

@ -5,6 +5,9 @@ JEMALLOCSRCS:= jemalloc.c arena.c background_thread.c base.c bin.c bitmap.c \
test_hooks.c ticker.c tsd.c witness.c
CFLAGS+=-I${SRCTOP}/contrib/jemalloc/include
.if ${MK_JEMALLOC_LG_VADDR_WIDE} != no
CFLAGS+=-D_USE_LG_VADDR_WIDE
.endif
.for src in ${JEMALLOCSRCS}
MISRCS+=jemalloc_${src}

1
share/mk/src.opts.mk
View file

@ -118,6 +118,7 @@ __DEFAULT_YES_OPTIONS = \
IPFW \
ISCSI \
JAIL \
JEMALLOC_LG_VADDR_WIDE \
KDUMP \
KVM \
LDNS \

5
tools/build/options/WITHOUT_JEMALLOC_LG_VADDR_WIDE Normal file
View file

@ -0,0 +1,5 @@
Disallow programs to use more than 48 address bits on amd64.
Incompatible with LA57 mode.
Enabling this option might result in a slight reduction in memory
consumption for jemalloc metadata, but also requires disabling LA57
(if hardware supports it).