pmc_grab_mutex 1159 arch/sparc/kernel/perf_event.c static DEFINE_MUTEX(pmc_grab_mutex); pmc_grab_mutex 1176 arch/sparc/kernel/perf_event.c mutex_lock(&pmc_grab_mutex); pmc_grab_mutex 1184 arch/sparc/kernel/perf_event.c mutex_unlock(&pmc_grab_mutex); pmc_grab_mutex 1189 arch/sparc/kernel/perf_event.c if (atomic_dec_and_mutex_lock(&active_events, &pmc_grab_mutex)) { pmc_grab_mutex 1192 arch/sparc/kernel/perf_event.c mutex_unlock(&pmc_grab_mutex);