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Miller" , Eric Dumazet , Paolo Abeni , Andy Shevchenko , Rasmus Villemoes , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider , Tariq Toukan , Gal Pressman , Greg Kroah-Hartman , Heiko Carstens , Barry Song Subject: [PATCH 7/8] lib: add test for for_each_numa_{cpu,hop_mask}() Date: Sat, 25 Mar 2023 11:55:13 -0700 Message-Id: <20230325185514.425745-8-yury.norov@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230325185514.425745-1-yury.norov@gmail.com> References: <20230325185514.425745-1-yury.norov@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761367342495528304?= X-GMAIL-MSGID: =?utf-8?q?1761367342495528304?= The test ensures that enumerators' output is consistent with cpumask_local_spread(). Signed-off-by: Yury Norov --- lib/test_bitmap.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c index a8005ad3bd58..1b5f805f6879 100644 --- a/lib/test_bitmap.c +++ b/lib/test_bitmap.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include "../tools/testing/selftests/kselftest_module.h" @@ -751,6 +752,33 @@ static void __init test_for_each_set_bit_wrap(void) } } +static void __init test_for_each_numa(void) +{ + unsigned int cpu, node; + + for (node = 0; node < sched_domains_numa_levels; node++) { + const struct cpumask *m, *p = cpu_none_mask; + unsigned int c = 0; + + rcu_read_lock(); + for_each_numa_hop_mask(m, node) { + for_each_cpu_andnot(cpu, m, p) + expect_eq_uint(cpumask_local_spread(c++, node), cpu); + p = m; + } + rcu_read_unlock(); + } + + for (node = 0; node < sched_domains_numa_levels; node++) { + unsigned int hop, c = 0; + + rcu_read_lock(); + for_each_numa_cpu(cpu, hop, node, cpu_online_mask) + expect_eq_uint(cpumask_local_spread(c++, node), cpu); + rcu_read_unlock(); + } +} + static void __init test_for_each_set_bit(void) { DECLARE_BITMAP(orig, 500); @@ -1237,6 +1265,7 @@ static void __init selftest(void) test_for_each_clear_bitrange_from(); test_for_each_set_clump8(); test_for_each_set_bit_wrap(); + test_for_each_numa(); } KSTM_MODULE_LOADERS(test_bitmap);