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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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8
sysdeps/unix/sysv/linux/powerpc/elision-conf.c
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@ -22,9 +22,7 @@
#include <unistd.h>
#include <dl-procinfo.h>
#if HAVE_TUNABLES
# define TUNABLE_NAMESPACE elision
#endif
#define TUNABLE_NAMESPACE elision
#include <elf/dl-tunables.h>
/* Reasonable initial tuning values, may be revised in the future.
@ -51,7 +49,6 @@ struct elision_config __elision_aconf =
.skip_trylock_internal_abort = 3,
};
#if HAVE_TUNABLES
static inline void
__always_inline
do_set_elision_enable (int32_t elision_enable)
@ -94,14 +91,12 @@ TUNABLE_CALLBACK_FNDECL (skip_lock_internal_abort, int32_t);
TUNABLE_CALLBACK_FNDECL (skip_lock_out_of_tbegin_retries, int32_t);
TUNABLE_CALLBACK_FNDECL (try_tbegin, int32_t);
TUNABLE_CALLBACK_FNDECL (skip_trylock_internal_abort, int32_t);
#endif
/* Initialize elision. */
void
__lll_elision_init (void)
{
#if HAVE_TUNABLES
/* Elision depends on tunables and must be explicitly turned on by setting
the appropriate tunable on a supported platform. */
@ -117,7 +112,6 @@ __lll_elision_init (void)
TUNABLE_CALLBACK (set_elision_try_tbegin));
TUNABLE_GET (skip_trylock_internal_abort, int32_t,
TUNABLE_CALLBACK (set_elision_skip_trylock_internal_abort));
#endif
/* Linux from 3.9 through 4.2 do not abort HTM transaction on syscalls,
instead it suspends the transaction and resumes it when returning to