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Using thp mode only instead as best as we can

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This commit is contained in:
David Carlier 2019-07-23 18:47:09 +01:00
parent 3f894c9bf6
commit ffd0ae314b
1 changed files with 6 additions and 8 deletions
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14
src/os.c
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@ -277,9 +277,6 @@ static void* mi_unix_mmap(size_t size, size_t try_alignment, int protect_flags)
#ifdef MAP_ALIGNED_SUPER
lflags |= MAP_ALIGNED_SUPER;
#endif
#ifdef MAP_HUGETLB
lflags |= MAP_HUGETLB;
#endif
#ifdef MAP_HUGE_2MB
lflags |= MAP_HUGE_2MB;
#endif
@ -292,11 +289,12 @@ static void* mi_unix_mmap(size_t size, size_t try_alignment, int protect_flags)
// Should we check this in _mi_os_init? (as on Windows)
p = mi_unix_mmapx(size, try_alignment, protect_flags, lflags, fd);
#ifdef MADV_HUGEPAGE
if (p == MAP_FAILED) {
lflags = flags; // large page could be set to madvise only
p = mi_unix_mmapx(size, try_alignment, protect_flags, lflags, fd);
if (p == MAP_FAILED) return NULL; // we did what we could at this stage
else madvise(p, size, MADV_HUGEPAGE);
if (p != MAP_FAILED) {
int err = madvise(p, size, MADV_HUGEPAGE);
if (err != 0) {
// page will be just a regular mapping no need to trash it
_mi_warning_message("madvise thp error: address: 0x%p, size: 0x%x, errno: %i\n", p, size, errno);
}
}
#else
if (p == MAP_FAILED) p = NULL; // fall back to regular mmap if large is exhausted or no permission