sig_action_SIGUSR1 155 tools/testing/selftests/mqueue/mq_perf_tests.c void sig_action_SIGUSR1(int signum, siginfo_t *info, void *context); sig_action_SIGUSR1 688 tools/testing/selftests/mqueue/mq_perf_tests.c sa.sa_sigaction = sig_action_SIGUSR1;