Dev Jain fa5d1b5419 malloc: Do not call madvise if oldsize >= THP size ... Linux handles virtual memory in Virtual Memory Areas (VMAs). The madvise(MADV_HUGEPAGE) call works on a VMA granularity, which sets the VM_HUGEPAGE flag on the VMA. If this VMA or a portion of it is mremapped to a different location, Linux will create a new VMA, which will have the same flags as the old one. This implies that the VM_HUGEPAGE flag will be retained. Therefore, if we can guarantee that the old VMA was marked with VM_HUGEPAGE, then there is no need to call madvise_thp() in mremap_chunk(). The old chunk comes from a heap or non-heap allocation, both of which have already been enlightened for THP. This implies that, if THP is on, and the size of the old chunk is greater than or equal to thp_pagesize, the VMA to which this chunk belongs to, has the VM_HUGEPAGE flag set. Hence in this case we can avoid invoking the madvise() syscall. Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>		2025-10-08 12:59:30 +00:00
..
Depend	…
Makefile	malloc: add tst-mxfast to hugetlb exclusion list	2025-08-29 13:22:19 -04:00
Versions	…
alloc_buffer_alloc_array.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
alloc_buffer_allocate.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
alloc_buffer_copy_bytes.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
alloc_buffer_copy_string.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
alloc_buffer_create_failure.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
arena.c	malloc: Hoist common unlock out of if-else control block	2025-09-18 15:50:15 -04:00
dynarray-skeleton.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray_at_failure.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray_emplace_enlarge.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray_finalize.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray_resize.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
dynarray_resize_clear.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
hooks.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
malloc-check.c	malloc: Cleanup macros, asserts and sysmalloc_mmap_fallback	2025-10-03 16:34:10 +00:00
malloc-debug.c	atomic: Remove atomic_forced_read	2025-10-08 12:59:30 +00:00
malloc-internal.h	malloc: Improve malloc initialization	2025-05-12 16:10:28 +00:00
malloc.c	malloc: Do not call madvise if oldsize >= THP size	2025-10-08 12:59:30 +00:00
malloc.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mallocbug.c	…
mcheck-impl.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mcheck-init.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mcheck.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mcheck.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
memusage.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
memusage.sh	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
memusagestat.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
morecore.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mtrace-impl.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mtrace.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
mtrace.pl	Update copyright dates not handled by scripts/update-copyrights	2025-01-01 11:22:09 -08:00
obstack.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
obstack.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
reallocarray.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
scratch_buffer_grow.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
scratch_buffer_grow_preserve.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
scratch_buffer_set_array_size.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
set-freeres.c	elf: Merge __dl_libc_freemem into __rtld_libc_freeres	2025-02-02 20:10:09 +01:00
thread-freeres.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-aligned-alloc-random-thread-cross.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-aligned-alloc-random-thread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-aligned-alloc-random.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-aligned-alloc-static.c	…
tst-aligned-alloc.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-aligned_alloc-lib.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-alloc_buffer.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-calloc.c	malloc: cleanup casts in tst-calloc	2025-01-25 05:34:05 +00:00
tst-compathooks-off.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-compathooks-on.c	…
tst-dynarray-at-fail.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-dynarray-fail.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-dynarray-shared.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-dynarray.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-free-errno.c	malloc: Fix tst bug in malloc/tst-free-errno-malloc-hugetlb1.	2025-08-19 09:05:32 +08:00
tst-interpose-aux-nothread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-aux-thread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-aux.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-aux.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-nothread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-skeleton.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-static-nothread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-static-thread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-interpose-thread.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mallinfo2.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-alternate-path.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-aux.h	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-backtrace.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-check.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-fork-deadlock.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-random.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-stats-cancellation.c	…
tst-malloc-tcache-leak.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-thread-exit.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-thread-fail.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-too-large.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc-usable-tunables.c	…
tst-malloc-usable.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-malloc_info.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mallocalign1.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mallocfork.c	…
tst-mallocfork2.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mallocfork3.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mallocstate.c	malloc: Remove dumped heap support	2025-09-19 13:11:56 +00:00
tst-mallopt.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-memalign-2.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-memalign-3.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-memalign.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mtrace.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mtrace.sh	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-mxfast.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-obstack.c	…
tst-posix_memalign.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-pvalloc-fortify.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-pvalloc.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-realloc.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-reallocarray.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-safe-linking.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-scratch_buffer.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-tcfree1.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-tcfree2.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-tcfree3.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00
tst-tcfree4.c	malloc: Improved double free detection in the tcache	2025-05-12 11:58:30 +00:00
tst-trim1.c	…
tst-valloc.c	Update copyright dates with scripts/update-copyrights	2025-01-01 11:22:09 -08:00