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"
26  * Just disable the test for these architectures until these issues are
47 	attr->type = PERF_TYPE_BREAKPOINT;  in __event()
48 	attr->size = sizeof(struct perf_event_attr);  in __event()
50 	attr->config = 0;  in __event()
51 	attr->bp_type = is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W;  in __event()
52 	attr->bp_addr = (unsigned long) addr;  in __event()
53 	attr->bp_len = sizeof(long);  in __event()
55 	attr->sample_period = 1;  in __event()
56 	attr->sample_type = PERF_SAMPLE_IP;  in __event()
58 	attr->exclude_kernel = 1;  in __event()
59 	attr->exclude_hv = 1;  in __event()
61 	fd = sys_perf_event_open(attr, -1, 0, -1,  in __event()
64 		pr_debug("failed opening event %llx\n", attr->config);  in __event()
88 		TEST_ASSERT_VAL("failed to create wp\n", fd[i] != -1);  in bp_accounting()
89 		pr_debug("wp %d created\n", i);  in bp_accounting()
97 	TEST_ASSERT_VAL("failed to modify wp\n", ret == 0);  in bp_accounting()
99 	pr_debug("wp 0 modified to bp\n");  in bp_accounting()
103 		TEST_ASSERT_VAL("failed to create max wp\n", fd_wp != -1);  in bp_accounting()
104 		pr_debug("wp max created\n");  in bp_accounting()
154 	int i, *fd = NULL, ret = -1;  in detect_share()
161 		return -1;  in detect_share()
165 		if (fd[i] == -1) {  in detect_share()
166 			pr_err("failed to create wp\n");  in detect_share()
173 		if (fd[i] == -1)  in detect_share()
180 	while (i--)  in detect_share()
189  *   - detects the number of watch/break-points,
191  *   - detects PERF_EVENT_IOC_MODIFY_ATTRIBUTES ioctl,
193  *   - detects if watchpoints and breakpoints share
195  *   - create all possible watchpoints on cpu 0
196  *   - change one of it to breakpoint
197  *   - in case wp and bp do not share slots,