From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Wang Date: Thu, 3 Dec 2020 11:06:14 +0000 Subject: [LTP] [PATCH 1/3] lib: add .min_cpus in tst_test struct Message-ID: <20201203110616.28302-1-liwang@redhat.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it As the name implies, this new field is mainly to set minimum numbers of CPU for LTP testcase. If system online CPUs are less than .min_cpus, test will be exit with TCONF. Note: I wouldn't add more description in test-writing-guidelines.txt, because it is easy to understand the usage from the name. Signed-off-by: Li Wang --- include/tst_test.h | 3 +++ lib/tst_test.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/include/tst_test.h b/include/tst_test.h index c91d3f18a..64a0934dd 100644 --- a/include/tst_test.h +++ b/include/tst_test.h @@ -157,6 +157,9 @@ struct tst_test { */ int all_filesystems:1; + /* Minimal numbers of CPU online required by the test */ + unsigned long min_cpus; + /* * If set non-zero number of request_hugepages, test will try to reserve the * expected number of hugepage for testing in setup phase. If system does not diff --git a/lib/tst_test.c b/lib/tst_test.c index 535c0ff4c..90b69789c 100644 --- a/lib/tst_test.c +++ b/lib/tst_test.c @@ -918,6 +918,9 @@ static void do_setup(int argc, char *argv[]) if (tst_test->all_filesystems) tst_test->needs_device = 1; + if (tst_test->min_cpus > tst_ncpus()) + tst_brk(TCONF, "Test needs %lu CPUs online", tst_test->min_cpus); + if (tst_test->request_hugepages) tst_request_hugepages(tst_test->request_hugepages); -- 2.21.3