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nptl: Eliminate <smp.h> and __is_smp

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Most systems are SMP, so optimizing for the UP case is no longer
approriate.  A dynamic check based on the kernel identification
has been only implemented for i386 anyway.

To disable adaptive mutexes on sh, define DEFAULT_ADAPTIVE_COUNT
as zero for this architecture.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2020-11-13 15:19:41 +01:00
parent d5c4cce9c3
commit 26f7c72a99
9 changed files with 20 additions and 121 deletions
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4
nptl/nptl-init.c
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@ -32,7 +32,6 @@
#include <fork.h>
#include <version.h>
#include <shlib-compat.h>
#include <smp.h>
#include <lowlevellock.h>
#include <futex-internal.h>
#include <kernel-features.h>
@ -346,9 +345,6 @@ __pthread_initialize_minimal_internal (void)
__libc_pthread_init (&__fork_generation, __reclaim_stacks,
ptr_pthread_functions);
/* Determine whether the machine is SMP or not. */
__is_smp = is_smp_system ();
#if HAVE_TUNABLES
__pthread_tunables_init ();
#endif