From 374976dd138bd4d74608d5658c84c0e257716d0b Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 16 Mar 2012 19:28:51 -0700 Subject: Fix SHMLBA on sparc. [BZ #6471] * sysdeps/unix/sysv/linux/shmat.c (shmat): Test for syscall errors properly. * sysdeps/unix/sysv/linux/sparc/getshmlba.c: New file. * sysdeps/unix/sysv/linux/sparc/Makefile: Add getshmlba to sysdep_routines when subdir is sysvipc. * sysdeps/unix/sysv/linux/sparc/bits/shm.h (SHMLBA): Use new __getshmlba helper. --- sysdeps/unix/sysv/linux/sparc/getshmlba.c | 40 +++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/sparc/getshmlba.c (limited to 'sysdeps/unix/sysv/linux/sparc/getshmlba.c') diff --git a/sysdeps/unix/sysv/linux/sparc/getshmlba.c b/sysdeps/unix/sysv/linux/sparc/getshmlba.c new file mode 100644 index 0000000000..205bed2720 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/getshmlba.c @@ -0,0 +1,40 @@ +/* Copyright (C) 2012 + 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 + . */ + +#include +#include +#include + +int +__getshmlba (void) +{ + uint64_t hwcap = GLRO(dl_hwcap); + int pgsz = GLRO(dl_pagesize); + + if (hwcap & HWCAP_SPARC_V9) + { + if (pgsz < (16 * 1024)) + return 16 * 1024; + else + return pgsz; + } + else if (!(hwcap & HWCAP_SPARC_FLUSH)) + return 64 * 1024; + else + return 256 * 1024; +} -- cgit v1.2.3