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bh=839SGTy9aZg6sOmDTUIZNVyMcmR+tIKs9rd0Bg0ZYaU=; b=PRJfvd52JKoc43PwcTVfL+4yV1RJYICebope36PxZMIbQkg/il184J8Esi73Eat/zU GZ7mqWuSqzap17+0KGW7j0Wg3VOuU30agVXSoYSA+8iaeG6sGNuVoBvtDgo7IMMk02sA ILl5yEoDKKIzuqmmQRVPFzIkuKJ7fyR+sYAWW2acOrV23Kdbm+Qe7GVO/jn/aOmltMWu MOwZpaWAvfNyF6Av2M3pJ784mXEaddNCJ8O5+w/LdKfxl+CA3UlInArIozzqrTBXC2/j uiOCpdClGfbJ+fwHj6YneImPZtjSaP5tIH8e+EL2MwgMYKj6iJvxvCI2JgC3TpNU3qMt PgSg== X-Gm-Message-State: ALoCoQllXkumIsnRvUG6NQm+sQXlryG8MuBcvOnEHvr66zfrVQQrqXxpriR6xA0FTy+P2HxNkSf4L3uq6pN+jr25W0VrQpQw/A== X-Received: by 10.25.208.213 with SMTP id h204mr1885388lfg.112.1452805592681; Thu, 14 Jan 2016 13:06:32 -0800 (PST) Received: from khorivan.synapse.com ([212.90.63.58]) by smtp.gmail.com with ESMTPSA id t9sm981933lfd.13.2016.01.14.13.06.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 14 Jan 2016 13:06:31 -0800 (PST) From: Ivan Khoronzhuk To: lng-odp@lists.linaro.org Date: Thu, 14 Jan 2016 23:06:25 +0200 Message-Id: <1452805585-17676-1-git-send-email-ivan.khoronzhuk@linaro.org> X-Mailer: git-send-email 1.9.1 X-Topics: patch Subject: [lng-odp] [PATCH] validation: system: add validation tests for odp_cpu_cycles_* calls X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" https://bugs.linaro.org/show_bug.cgi?id=1906 Signed-off-by: Ivan Khoronzhuk --- test/validation/system/system.c | 111 ++++++++++++++++++++++++++++++++++++++++ test/validation/system/system.h | 4 ++ 2 files changed, 115 insertions(+) diff --git a/test/validation/system/system.c b/test/validation/system/system.c index 7dc2cc0..8edbd04 100644 --- a/test/validation/system/system.c +++ b/test/validation/system/system.c @@ -10,6 +10,8 @@ #include "test_debug.h" #include "system.h" +#define TRY_NUM 80 + void system_test_odp_version_numbers(void) { int char_ok = 0; @@ -40,6 +42,111 @@ void system_test_odp_cpu_count(void) CU_ASSERT(0 < cpus); } +void system_test_odp_cpu_cycles_max(void) +{ + uint64_t max1, max2; + + max1 = odp_cpu_cycles_max(); + odp_time_wait_ns(100); + max2 = odp_cpu_cycles_max(); + + CU_ASSERT(max1 >= UINT32_MAX / 2); + CU_ASSERT(max1 == max2); +} + +void system_test_odp_cpu_cycles(void) +{ + uint64_t c2, c1; + + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100); + c2 = odp_cpu_cycles(); + + CU_ASSERT(c2 != c1); +} + +void system_test_odp_cpu_cycles_diff(void) +{ + int i; + uint64_t c2, c1; + uint64_t etalon, diff; + + c2 = 100; + c1 = 39; + + diff = odp_cpu_cycles_diff(c2, c2); + CU_ASSERT(diff == 0); + + etalon = c2 - c1; + diff = odp_cpu_cycles_diff(c2, c1); + CU_ASSERT(diff == etalon); + + etalon = c1 + (odp_cpu_cycles_max() - c2) + 1; + diff = odp_cpu_cycles_diff(c1, c2); + CU_ASSERT(diff == etalon); + + c1 = odp_cpu_cycles(); + if (!(odp_cpu_cycles_max() <= UINT32_MAX || + (odp_cpu_cycles_max() - c1) <= UINT32_MAX)) + return; + + /* must handle one wrap */ + for (i = 0; i < TRY_NUM; i++) { + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100 * ODP_TIME_MSEC_IN_NS + i); + c2 = odp_cpu_cycles(); + + CU_ASSERT(c2 != c1); + + if (c2 > c1) + etalon = c2 - c1; + else + etalon = c2 + (odp_cpu_cycles_max() - c1) + 1; + + diff = odp_cpu_cycles_diff(c2, c1); + CU_ASSERT(diff == etalon); + + /* wrap is detected and verified */ + if (c2 < c1) + break; + } + + /* wrap has to be detected */ + CU_ASSERT(i < TRY_NUM); +} + +void system_test_odp_cpu_cycles_resolution(void) +{ + int i; + uint64_t rest; + uint64_t c2, c1; + uint64_t res, diff; + + res = odp_cpu_cycles_resolution(); + CU_ASSERT(res != 0); + + /* + * must be a multiple of resolution in + * whole interval till wrap, in another + * case resolution is set in correctly + */ + for (i = 0; i < 10; i++) { + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100 * ODP_TIME_MSEC_IN_NS + i); + c2 = odp_cpu_cycles(); + + diff = odp_cpu_cycles_diff(c2, c1); + rest = diff % res; + CU_ASSERT(rest == 0); + + rest = c1 % res; + CU_ASSERT(rest == 0); + + rest = c2 % res; + CU_ASSERT(rest == 0); + } +} + void system_test_odp_sys_cache_line_size(void) { uint64_t cache_size; @@ -91,6 +198,10 @@ odp_testinfo_t system_suite[] = { ODP_TEST_INFO(system_test_odp_sys_page_size), ODP_TEST_INFO(system_test_odp_sys_huge_page_size), ODP_TEST_INFO(system_test_odp_sys_cpu_hz), + ODP_TEST_INFO(system_test_odp_cpu_cycles_max), + ODP_TEST_INFO(system_test_odp_cpu_cycles), + ODP_TEST_INFO(system_test_odp_cpu_cycles_diff), + ODP_TEST_INFO(system_test_odp_cpu_cycles_resolution), ODP_TEST_INFO_NULL, }; diff --git a/test/validation/system/system.h b/test/validation/system/system.h index 869aaff..0c263f2 100644 --- a/test/validation/system/system.h +++ b/test/validation/system/system.h @@ -17,6 +17,10 @@ void system_test_odp_sys_cpu_model_str(void); void system_test_odp_sys_page_size(void); void system_test_odp_sys_huge_page_size(void); void system_test_odp_sys_cpu_hz(void); +void system_test_odp_cpu_cycles_max(void); +void system_test_odp_cpu_cycles(void); +void system_test_odp_cpu_cycles_diff(void); +void system_test_odp_cpu_cycles_resolution(void); /* test arrays: */ extern odp_testinfo_t system_suite[];