diff options
Diffstat (limited to 'tests/test-x86-cpuid.c')
| -rw-r--r-- | tests/test-x86-cpuid.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/tests/test-x86-cpuid.c b/tests/test-x86-cpuid.c new file mode 100644 index 0000000000..8d9f96a113 --- /dev/null +++ b/tests/test-x86-cpuid.c @@ -0,0 +1,110 @@ +/* + * Test code for x86 CPUID and Topology functions + * + * Copyright (c) 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include <glib.h> + +#include "topology.h" + +static void test_topo_bits(void) +{ + /* simple tests for 1 thread per core, 1 core per socket */ + g_assert_cmpuint(apicid_smt_width(1, 1), ==, 0); + g_assert_cmpuint(apicid_core_width(1, 1), ==, 0); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 0), ==, 0); + g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1), ==, 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 2), ==, 2); + g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 3), ==, 3); + + + /* Test field width calculation for multiple values + */ + g_assert_cmpuint(apicid_smt_width(1, 2), ==, 1); + g_assert_cmpuint(apicid_smt_width(1, 3), ==, 2); + g_assert_cmpuint(apicid_smt_width(1, 4), ==, 2); + + g_assert_cmpuint(apicid_smt_width(1, 14), ==, 4); + g_assert_cmpuint(apicid_smt_width(1, 15), ==, 4); + g_assert_cmpuint(apicid_smt_width(1, 16), ==, 4); + g_assert_cmpuint(apicid_smt_width(1, 17), ==, 5); + + + g_assert_cmpuint(apicid_core_width(30, 2), ==, 5); + g_assert_cmpuint(apicid_core_width(31, 2), ==, 5); + g_assert_cmpuint(apicid_core_width(32, 2), ==, 5); + g_assert_cmpuint(apicid_core_width(33, 2), ==, 6); + + + /* build a weird topology and see if IDs are calculated correctly + */ + + /* This will use 2 bits for thread ID and 3 bits for core ID + */ + g_assert_cmpuint(apicid_smt_width(6, 3), ==, 2); + g_assert_cmpuint(apicid_core_width(6, 3), ==, 3); + g_assert_cmpuint(apicid_pkg_offset(6, 3), ==, 5); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 0), ==, 0); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1), ==, 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2), ==, 2); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 0), ==, + (1 << 2) | 0); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 1), ==, + (1 << 2) | 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 2), ==, + (1 << 2) | 2); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 0), ==, + (2 << 2) | 0); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 1), ==, + (2 << 2) | 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 2), ==, + (2 << 2) | 2); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 0), ==, + (5 << 2) | 0); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 1), ==, + (5 << 2) | 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 2), ==, + (5 << 2) | 2); + + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 0 * 3 + 0), ==, + (1 << 5)); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 1 * 3 + 1), ==, + (1 << 5) | (1 << 2) | 1); + g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 3 * 6 * 3 + 5 * 3 + 2), ==, + (3 << 5) | (5 << 2) | 2); +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + + g_test_add_func("/cpuid/topology/basic", test_topo_bits); + + g_test_run(); + + return 0; +} |