From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cyril Hrubis Date: Wed, 3 May 2017 14:42:33 +0200 Subject: [LTP] [RFC] [PATCH] syscalls/move_pages12: Two fixes. Message-ID: <20170503124233.18585-1-chrubis@suse.cz> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it * Do not multiply free ram with 1024 - Since we get overflow even on fairly modest machine with a few GB of RAM and the test will always report "Not enough RAM". * Drop caches before the test - Otherwise the move_pages() syscalls may fail with ENOMEM. Signed-off-by: Cyril Hrubis --- testcases/kernel/syscalls/move_pages/move_pages12.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/testcases/kernel/syscalls/move_pages/move_pages12.c b/testcases/kernel/syscalls/move_pages/move_pages12.c index eeec489..b3ebb7c 100644 --- a/testcases/kernel/syscalls/move_pages/move_pages12.c +++ b/testcases/kernel/syscalls/move_pages/move_pages12.c @@ -139,13 +139,17 @@ static void setup(void) pgsz = (int)get_page_size(); SAFE_FILE_LINES_SCANF(PATH_MEMINFO, "Hugepagesize: %d", &hpsz); - hpsz *= 1024; + + SAFE_FILE_PRINTF("/proc/sys/vm/drop_caches", "1"); SAFE_FILE_LINES_SCANF(PATH_MEMINFO, "MemFree: %d", &memfree); - memfree *= 1024; + tst_res(TINFO, "Free RAM %d kB", memfree); + if (4 * hpsz > memfree) tst_brk(TBROK, "Not enough free RAM"); + hpsz *= 1024; + SAFE_FILE_SCANF(PATH_NR_HUGEPAGES, "%ld", &orig_hugepages); SAFE_FILE_PRINTF(PATH_NR_HUGEPAGES, "%ld", orig_hugepages + 4); -- 2.7.3