perf/tests/bp_account.c

1 // SPDX-License-Identifier: GPL-2.0
4  * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
19 #include "../perf-sys.h"
34 	attr->type = PERF_TYPE_BREAKPOINT;  in __event()
35 	attr->size = sizeof(struct perf_event_attr);  in __event()
37 	attr->config = 0;  in __event()
38 	attr->bp_type = is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W;  in __event()
39 	attr->bp_addr = (unsigned long) addr;  in __event()
40 	attr->bp_len = sizeof(long);  in __event()
42 	attr->sample_period = 1;  in __event()
43 	attr->sample_type = PERF_SAMPLE_IP;  in __event()
45 	attr->exclude_kernel = 1;  in __event()
46 	attr->exclude_hv = 1;  in __event()
48 	fd = sys_perf_event_open(attr, -1, 0, -1,  in __event()
51 		pr_debug("failed opening event %llx\n", attr->config);  in __event()
75 		TEST_ASSERT_VAL("failed to create wp\n", fd[i] != -1);  in bp_accounting()
76 		pr_debug("wp %d created\n", i);  in bp_accounting()
84 	TEST_ASSERT_VAL("failed to modify wp\n", ret == 0);  in bp_accounting()
86 	pr_debug("wp 0 modified to bp\n");  in bp_accounting()
90 		TEST_ASSERT_VAL("failed to create max wp\n", fd_wp != -1);  in bp_accounting()
91 		pr_debug("wp max created\n");  in bp_accounting()
145 		TEST_ASSERT_VAL("failed to create wp\n", fd[i] != -1);  in detect_share()
150 		if (fd[i] == -1)  in detect_share()
156 	while (i--)  in detect_share()
164  *   - detects the number of watch/break-points,
166  *   - detects PERF_EVENT_IOC_MODIFY_ATTRIBUTES ioctl,
168  *   - detects if watchpoints and breakpoints share
170  *   - create all possible watchpoints on cpu 0
171  *   - change one of it to breakpoint
172  *   - in case wp and bp do not share slots,
198 	 * Just disable the test for these architectures until these  in test__bp_account_is_supported()