On 11/23/2011 06:29 PM, Wanlong Gao wrote:
> This library includes a set of functions used to mount hugetlbfs
> automatically when doing the hugemmap tests.
>
> Signed-off-by: Tang Chen <tangc...@cn.fujitsu.com>
> Signed-off-by: Wanlong Gao <gaowanl...@cn.fujitsu.com>
> ---
> testcases/kernel/mem/hugetlb/hugemmap/Makefile | 6 ++-
> testcases/kernel/mem/hugetlb/hugemmap/libmnt.c | 58
> ++++++++++++++++++++++++
> testcases/kernel/mem/hugetlb/hugemmap/libmnt.h | 25 ++++++++++
> 3 files changed, 88 insertions(+), 1 deletions(-)
> create mode 100644 testcases/kernel/mem/hugetlb/hugemmap/libmnt.c
> create mode 100644 testcases/kernel/mem/hugetlb/hugemmap/libmnt.h
>
> diff --git a/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> b/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> index a1ba46e..e6ba4fe 100644
> --- a/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> +++ b/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> @@ -23,5 +23,9 @@
> top_srcdir ?= ../../../../..
>
> include $(top_srcdir)/include/mk/testcases.mk
> -include $(abs_srcdir)/../Makefile.inc
> +
> +MAKE_TARGETS := $(filter-out libmnt,$(patsubst
> $(abs_srcdir)/%.c,%,$(wildcard $(abs_srcdir)/*.c)))
> +
> +$(MAKE_TARGETS): %: %.o libmnt.o
> +
> include $(top_srcdir)/include/mk/generic_leaf_target.mk
> diff --git a/testcases/kernel/mem/hugetlb/hugemmap/libmnt.c
> b/testcases/kernel/mem/hugetlb/hugemmap/libmnt.c
> new file mode 100644
> index 0000000..bf6f857
> --- /dev/null
> +++ b/testcases/kernel/mem/hugetlb/hugemmap/libmnt.c
> @@ -0,0 +1,58 @@
> +/*
> + *
> + * Copyright (c) Fujitsu Corp., 2011
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program 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 General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + */
> +
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <sys/mount.h>
> +#include <errno.h>
> +
> +#include "test.h"
> +#include "libmnt.h"
> +
> +void
> +hugepage_alloc(int num)
It's not necessary to put it into 2 lines.
> +{
> + FILE *file = fopen("/proc/sys/vm/nr_hugepages", "w+");
> + if (file == NULL) {
> + tst_brkm(TBROK|TERRNO, NULL,
> + "fopen failed on /proc/sys/vm/nr_hugepages");
> + }
> +
> + if (fprintf(file, "%d", num) < 0) {
> + tst_brkm(TBROK|TERRNO, NULL,
> + "fprintf failed on /proc/sys/vm/nr_hugepages");
> + }
> +
> + fclose(file);
> +}
> +
> +void
> +mount_hugetlbfs(char *mount_point)
> +{
> + if (mount("none", mount_point, "hugetlbfs", 0, NULL) < 0) {
> + tst_brkm(TBROK|TERRNO, NULL,
> + "mount failed on %s", mount_point);
> + }
> +}
> +
> +void
> +umount_hugetlbfs(char *mount_point)
> +{
> + umount(mount_point);
You should check the return code and errno for it.
> +}
> diff --git a/testcases/kernel/mem/hugetlb/hugemmap/libmnt.h
> b/testcases/kernel/mem/hugetlb/hugemmap/libmnt.h
> new file mode 100644
> index 0000000..dc1ceed
> --- /dev/null
> +++ b/testcases/kernel/mem/hugetlb/hugemmap/libmnt.h
> @@ -0,0 +1,25 @@
> +/*
> + * Copyright (c) Fujitsu Corp., 2011
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program 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 General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + */
> +
> +/*
> + * libmnt.h - functions to mount hugetlbfs automatically.
> + */
> +
> +void hugepage_alloc(int num);
> +void mount_hugetlbfs(char *mount_point);
> +void umount_hugetlbfs(char *mount_point);
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