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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-08-30 14:01:00 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-12-15 17:35:39 -0300 |
| commit | 0f982c182760bd7689769ee7590df592d0a132c0 (patch) | |
| tree | f538197b6d1f3d2bd4eda217fccb4c824d3b5929 /malloc/morecore.c | |
| parent | 0849eed45daabf30a02c153695041597d6d43b2d (diff) | |
| download | glibc-0f982c182760bd7689769ee7590df592d0a132c0.tar.gz glibc-0f982c182760bd7689769ee7590df592d0a132c0.tar.xz glibc-0f982c182760bd7689769ee7590df592d0a132c0.zip | |
malloc: Enable huge page support on main arena
This patch adds support huge page support on main arena allocation, enable with tunable glibc.malloc.hugetlb=2. The patch essentially disable the __glibc_morecore() sbrk() call (similar when memory tag does when sbrk() call does not support it) and fallback to default page size if the memory allocation fails. Checked on x86_64-linux-gnu. Reviewed-by: DJ Delorie <dj@redhat.com>
Diffstat (limited to 'malloc/morecore.c')
| -rw-r--r-- | malloc/morecore.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/malloc/morecore.c b/malloc/morecore.c index 8168ef158c..004cd3ead4 100644 --- a/malloc/morecore.c +++ b/malloc/morecore.c @@ -15,9 +15,7 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#if defined(SHARED) || defined(USE_MTAG) static bool __always_fail_morecore = false; -#endif /* Allocate INCREMENT more bytes of data space, and return the start of data space, or NULL on errors. @@ -25,10 +23,8 @@ static bool __always_fail_morecore = false; void * __glibc_morecore (ptrdiff_t increment) { -#if defined(SHARED) || defined(USE_MTAG) if (__always_fail_morecore) return NULL; -#endif void *result = (void *) __sbrk (increment); if (result == (void *) -1) |