From 26f7c72a99f4e46755ec2ff23a6a7cf9c2c337c3 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 13 Nov 2020 15:19:41 +0100 Subject: nptl: Eliminate and __is_smp 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 --- sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h (limited to 'sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h') diff --git a/sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h b/sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h new file mode 100644 index 0000000000..3431cd3d8c --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/adaptive_spin_count.h @@ -0,0 +1,20 @@ +/* Maximum adaptive spin count default for sh. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* Disable spinning because sh is always uniprocessor. */ +#define DEFAULT_ADAPTIVE_COUNT 0 -- cgit 1.4.1