perf/tests/bp_signal_overflow.c

1 // SPDX-License-Identifier: GPL-2.0
9  * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
28 #include "../perf-sys.h"
47 	long long count;  in bp_count()  local
50 	ret = read(fd, &count, sizeof(long long));  in bp_count()
56 	return count;  in bp_count()
60 #define THRESHOLD  100  macro
66 	long long count;  in test__bp_signal_overflow()  local
93 	pe.sample_period = THRESHOLD;  in test__bp_signal_overflow()
101 	fd = sys_perf_event_open(&pe, 0, -1, -1,  in test__bp_signal_overflow()
120 	count = bp_count(fd);  in test__bp_signal_overflow()
124 	pr_debug("count %lld, overflow %d\n",  in test__bp_signal_overflow()
125 		 count, overflows);  in test__bp_signal_overflow()
127 	if (count != EXECUTIONS) {  in test__bp_signal_overflow()
129 		count, EXECUTIONS);  in test__bp_signal_overflow()
133 	if (overflows != EXECUTIONS / THRESHOLD) {  in test__bp_signal_overflow()
135 		overflows, EXECUTIONS / THRESHOLD);  in test__bp_signal_overflow()