[lng-odp] [PATCH v4] validation: system: add validation tests for odp_cpu_cycles_* calls
https://bugs.linaro.org/show_bug.cgi?id=1906
Signed-off-by: Ivan Khoronzhuk
---
Since v3:
- modified log "wrap is not detected"
- increased try num for diff to match 16 seconds
- decreased try num for resolution to match 1 second
- allow resolution to be up to max / 1024
- correct wrap detection for resolution
Since v2:
- added c <= max
- replaced etalon on tmp
- added msg about skip
- handled resolution wrap
test/validation/system/system.c | 139
test/validation/system/system.h | 4 ++
2 files changed, 143 insertions(+)
diff --git a/test/validation/system/system.c b/test/validation/system/system.c
index 7dc2cc0..400889c 100644
--- a/test/validation/system/system.c
+++ b/test/validation/system/system.c
@@ -10,6 +10,9 @@
#include "test_debug.h"
#include "system.h"
+#define DIFF_TRY_NUM 160
+#define RES_TRY_NUM10
+
void system_test_odp_version_numbers(void)
{
int char_ok = 0;
@@ -40,6 +43,138 @@ void system_test_odp_cpu_count(void)
CU_ASSERT(0 < cpus);
}
+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_max(void)
+{
+ uint64_t c2, c1;
+ 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);
+
+ c1 = odp_cpu_cycles();
+ odp_time_wait_ns(1000);
+ c2 = odp_cpu_cycles();
+
+ CU_ASSERT(c1 <= max1 && c2 <= max1);
+}
+
+void system_test_odp_cpu_cycles_diff(void)
+{
+ int i;
+ uint64_t c2, c1, c3;
+ uint64_t tmp, diff;
+
+ c2 = 100;
+ c1 = 39;
+
+ diff = odp_cpu_cycles_diff(c2, c2);
+ CU_ASSERT(diff == 0);
+
+ tmp = c2 - c1;
+ diff = odp_cpu_cycles_diff(c2, c1);
+ CU_ASSERT(diff == tmp);
+
+ tmp = c1 + (odp_cpu_cycles_max() - c2) + 1;
+ diff = odp_cpu_cycles_diff(c1, c2);
+ CU_ASSERT(diff == tmp);
+
+ c3 = odp_cpu_cycles();
+
+ /* must handle one wrap */
+ for (i = 0; i < DIFF_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)
+ tmp = c2 - c1;
+ else
+ tmp = c2 + (odp_cpu_cycles_max() - c1) + 1;
+
+ diff = odp_cpu_cycles_diff(c2, c1);
+ CU_ASSERT(diff == tmp);
+
+ /* wrap is detected and verified */
+ if (c2 < c1)
+ break;
+ }
+
+ /* wrap was detected, no need to continue */
+ if (i < DIFF_TRY_NUM)
+ return;
+
+ CU_ASSERT(odp_cpu_cycles_max() > UINT32_MAX);
+ CU_ASSERT((odp_cpu_cycles_max() - c3) > UINT32_MAX);
+
+ printf("wrap was not detected...");
+}
+
+void system_test_odp_cpu_cycles_resolution(void)
+{
+ int i;
+ uint64_t rest;
+ uint64_t res, diff;
+ uint64_t c2, c1, max;
+
+ max = odp_cpu_cycles_max();
+
+ res = odp_cpu_cycles_resolution();
+ CU_ASSERT(res != 0);
+ CU_ASSERT(res < max / 1024);
+
+ /* check resolution for wrap */
+ c1 = max - 2 * res;
+ do
+ c2 = odp_cpu_cycles();
+ while (c1 < c2);
+
+ diff = odp_cpu_cycles_diff(c1, c2);
+ rest = diff % res;
+ CU_ASSERT(rest == 0);
+
+ /*
+* must be a multiple of resolution in
+* whole interval till wrap, in another
+* case resolution is set incorrectly
+*/
+ for (i = 0; i < RES_TRY_NUM; 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);
+
+ /* wrap is detected and verified */
+ if (c2 < c1)
+ break;
+ }
+}
+
void system_test_odp_sys_cache_line_size(void)
{
uint64_t cache_size;
@@ -91,6 +226,10 @@ 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),
+ ODP_TEST_INFO(system_test_odp_cpu_cycles_max),
+ 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/
Re: [lng-odp] [PATCH v4] validation: system: add validation tests for odp_cpu_cycles_* calls
forget to remove comment for resolution loop.
so v5 is relevant.
On 15.01.16 16:50, Ivan Khoronzhuk wrote:
https://bugs.linaro.org/show_bug.cgi?id=1906
Signed-off-by: Ivan Khoronzhuk
---
Since v3:
- modified log "wrap is not detected"
- increased try num for diff to match 16 seconds
- decreased try num for resolution to match 1 second
- allow resolution to be up to max / 1024
- correct wrap detection for resolution
Since v2:
- added c <= max
- replaced etalon on tmp
- added msg about skip
- handled resolution wrap
test/validation/system/system.c | 139
test/validation/system/system.h | 4 ++
2 files changed, 143 insertions(+)
diff --git a/test/validation/system/system.c b/test/validation/system/system.c
index 7dc2cc0..400889c 100644
--- a/test/validation/system/system.c
+++ b/test/validation/system/system.c
@@ -10,6 +10,9 @@
#include "test_debug.h"
#include "system.h"
+#define DIFF_TRY_NUM 160
+#define RES_TRY_NUM10
+
void system_test_odp_version_numbers(void)
{
int char_ok = 0;
@@ -40,6 +43,138 @@ void system_test_odp_cpu_count(void)
CU_ASSERT(0 < cpus);
}
+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_max(void)
+{
+ uint64_t c2, c1;
+ 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);
+
+ c1 = odp_cpu_cycles();
+ odp_time_wait_ns(1000);
+ c2 = odp_cpu_cycles();
+
+ CU_ASSERT(c1 <= max1 && c2 <= max1);
+}
+
+void system_test_odp_cpu_cycles_diff(void)
+{
+ int i;
+ uint64_t c2, c1, c3;
+ uint64_t tmp, diff;
+
+ c2 = 100;
+ c1 = 39;
+
+ diff = odp_cpu_cycles_diff(c2, c2);
+ CU_ASSERT(diff == 0);
+
+ tmp = c2 - c1;
+ diff = odp_cpu_cycles_diff(c2, c1);
+ CU_ASSERT(diff == tmp);
+
+ tmp = c1 + (odp_cpu_cycles_max() - c2) + 1;
+ diff = odp_cpu_cycles_diff(c1, c2);
+ CU_ASSERT(diff == tmp);
+
+ c3 = odp_cpu_cycles();
+
+ /* must handle one wrap */
+ for (i = 0; i < DIFF_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)
+ tmp = c2 - c1;
+ else
+ tmp = c2 + (odp_cpu_cycles_max() - c1) + 1;
+
+ diff = odp_cpu_cycles_diff(c2, c1);
+ CU_ASSERT(diff == tmp);
+
+ /* wrap is detected and verified */
+ if (c2 < c1)
+ break;
+ }
+
+ /* wrap was detected, no need to continue */
+ if (i < DIFF_TRY_NUM)
+ return;
+
+ CU_ASSERT(odp_cpu_cycles_max() > UINT32_MAX);
+ CU_ASSERT((odp_cpu_cycles_max() - c3) > UINT32_MAX);
+
+ printf("wrap was not detected...");
+}
+
+void system_test_odp_cpu_cycles_resolution(void)
+{
+ int i;
+ uint64_t rest;
+ uint64_t res, diff;
+ uint64_t c2, c1, max;
+
+ max = odp_cpu_cycles_max();
+
+ res = odp_cpu_cycles_resolution();
+ CU_ASSERT(res != 0);
+ CU_ASSERT(res < max / 1024);
+
+ /* check resolution for wrap */
+ c1 = max - 2 * res;
+ do
+ c2 = odp_cpu_cycles();
+ while (c1 < c2);
+
+ diff = odp_cpu_cycles_diff(c1, c2);
+ rest = diff % res;
+ CU_ASSERT(rest == 0);
+
+ /*
+* must be a multiple of resolution in
+* whole interval till wrap, in another
+* case resolution is set incorrectly
+*/
+ for (i = 0; i < RES_TRY_NUM; 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);
+
+ /* wrap is detected and verified */
+ if (c2 < c1)
+ break;
+ }
+}
+
void system_test_odp_sys_cache_line_size(void)
{
uint64_t cache_size;
@@ -91,6 +226,10 @@ 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),
+ ODP_TEST_INFO(system_test_odp_cpu_cycles_max),
+ ODP_TEST_INFO(system_test_odp_cpu_cycles_dif
