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Remove --enable-tunables configure option

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And make always supported.  The configure option was added on glibc 2.25
and some features require it (such as hwcap mask, huge pages support, and
lock elisition tuning).  It also simplifies the build permutations.

Changes from v1:
 * Remove glibc.rtld.dynamic_sort changes, it is orthogonal and needs
   more discussion.
 * Cleanup more code.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Adhemerval Zanella Netto
2023-03-23 10:13:51 -03:00
committed by Adhemerval Zanella
parent 6384171fa0
commit 33237fe83d
48 changed files with 75 additions and 513 deletions
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14
malloc/malloc.c
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@ -1856,14 +1856,12 @@ struct malloc_par
INTERNAL_SIZE_T arena_test;
INTERNAL_SIZE_T arena_max;
#if HAVE_TUNABLES
/* Transparent Large Page support. */
INTERNAL_SIZE_T thp_pagesize;
/* A value different than 0 means to align mmap allocation to hp_pagesize
add hp_flags on flags. */
INTERNAL_SIZE_T hp_pagesize;
int hp_flags;
#endif
/* Memory map support */
int n_mmaps;
@ -1998,7 +1996,7 @@ free_perturb (char *p, size_t n)
static inline void
madvise_thp (void *p, INTERNAL_SIZE_T size)
{
#if HAVE_TUNABLES && defined (MADV_HUGEPAGE)
#ifdef MADV_HUGEPAGE
/* Do not consider areas smaller than a huge page or if the tunable is
not active. */
if (mp_.thp_pagesize == 0 || size < mp_.thp_pagesize)
@ -2557,7 +2555,6 @@ sysmalloc (INTERNAL_SIZE_T nb, mstate av)
&& (mp_.n_mmaps < mp_.n_mmaps_max)))
{
char *mm;
#if HAVE_TUNABLES
if (mp_.hp_pagesize > 0 && nb >= mp_.hp_pagesize)
{
/* There is no need to isse the THP madvise call if Huge Pages are
@ -2566,7 +2563,6 @@ sysmalloc (INTERNAL_SIZE_T nb, mstate av)
if (mm != MAP_FAILED)
return mm;
}
#endif
mm = sysmalloc_mmap (nb, pagesize, 0, av);
if (mm != MAP_FAILED)
return mm;
@ -2679,7 +2675,7 @@ sysmalloc (INTERNAL_SIZE_T nb, mstate av)
previous calls. Otherwise, we correct to page-align below.
*/
#if HAVE_TUNABLES && defined (MADV_HUGEPAGE)
#ifdef MADV_HUGEPAGE
/* Defined in brk.c. */
extern void *__curbrk;
if (__glibc_unlikely (mp_.thp_pagesize != 0))
@ -2718,12 +2714,10 @@ sysmalloc (INTERNAL_SIZE_T nb, mstate av)
*/
char *mbrk = MAP_FAILED;
#if HAVE_TUNABLES
if (mp_.hp_pagesize > 0)
mbrk = sysmalloc_mmap_fallback (&size, nb, old_size,
mp_.hp_pagesize, mp_.hp_pagesize,
mp_.hp_flags, av);
#endif
if (mbrk == MAP_FAILED)
mbrk = sysmalloc_mmap_fallback (&size, nb, old_size, MMAP_AS_MORECORE_SIZE,
pagesize, 0, av);
@ -2966,7 +2960,7 @@ systrim (size_t pad, mstate av)
return 0;
/* Release in pagesize units and round down to the nearest page. */
#if HAVE_TUNABLES && defined (MADV_HUGEPAGE)
#ifdef MADV_HUGEPAGE
if (__glibc_unlikely (mp_.thp_pagesize != 0))
extra = ALIGN_DOWN (top_area - pad, mp_.thp_pagesize);
else
@ -5410,7 +5404,6 @@ do_set_mxfast (size_t value)
return 0;
}
#if HAVE_TUNABLES
static __always_inline int
do_set_hugetlb (size_t value)
{
@ -5429,7 +5422,6 @@ do_set_hugetlb (size_t value)
&mp_.hp_flags);
return 0;
}
#endif
int
__libc_mallopt (int param_number, int value)