diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/configure b/configure index 9c8aa5a98b..100309c33f 100755 --- a/configure +++ b/configure @@ -426,6 +426,7 @@ vxhs="" supported_cpu="no" supported_os="no" bogus_os="no" +malloc_trim="" # parse CC options first for opt do @@ -1047,6 +1048,10 @@ for opt do ;; --enable-tcg) tcg="yes" ;; + --disable-malloc-trim) malloc_trim="no" + ;; + --enable-malloc-trim) malloc_trim="yes" + ;; --disable-spice) spice="no" ;; --enable-spice) spice="yes" @@ -1466,6 +1471,7 @@ Advanced options (experts only): Default:trace-<pid> --disable-slirp disable SLIRP userspace network connectivity --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI) + --enable-malloc-trim enable libc malloc_trim() for memory optimization --oss-lib path to OSS library --cpu=CPU Build for host CPU [$cpu] --with-coroutine=BACKEND coroutine backend. Supported options: @@ -3860,6 +3866,30 @@ if test "$tcmalloc" = "yes" && test "$jemalloc" = "yes" ; then exit 1 fi +# Even if malloc_trim() is available, these non-libc memory allocators +# do not support it. +if test "$tcmalloc" = "yes" || test "$jemalloc" = "yes" ; then + if test "$malloc_trim" = "yes" ; then + echo "Disabling malloc_trim with non-libc memory allocator" + fi + malloc_trim="no" +fi + +####################################### +# malloc_trim + +if test "$malloc_trim" != "no" ; then + cat > $TMPC << EOF +#include <malloc.h> +int main(void) { malloc_trim(0); return 0; } +EOF + if compile_prog "" "" ; then + malloc_trim="yes" + else + malloc_trim="no" + fi +fi + ########################################## # tcmalloc probe @@ -3923,7 +3953,7 @@ fi # check if memfd is supported memfd=no cat > $TMPC << EOF -#include <sys/memfd.h> +#include <sys/mman.h> int main(void) { @@ -5505,6 +5535,7 @@ if test "$tcg" = "yes" ; then echo "TCG debug enabled $debug_tcg" echo "TCG interpreter $tcg_interpreter" fi +echo "malloc trim support $malloc_trim" echo "RDMA support $rdma" echo "fdt support $fdt" echo "preadv support $preadv" @@ -6015,6 +6046,10 @@ if test "$opengl" = "yes" ; then fi fi +if test "$malloc_trim" = "yes" ; then + echo "CONFIG_MALLOC_TRIM=y" >> $config_host_mak +fi + if test "$avx2_opt" = "yes" ; then echo "CONFIG_AVX2_OPT=y" >> $config_host_mak fi |