HelenOS sources

SIGPROF           121 uspace/lib/posix/include/posix/signal.h 	_TOP_CATCHABLE_SIGNAL = SIGPROF,
SIGPROF           131 uspace/lib/posix/src/signal.c 	case SIGPROF:
SIGPROF           225 uspace/lib/posix/src/string.c 		[SIGPROF] = "SIGPROF (Profiling timer expired)",