"use per-thread mmaps"),
OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register",
"sample selected machine registers on interrupt,"
- " use -I ? to list register names", parse_regs),
+ " use '-I?' to list register names", parse_regs),
OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register",
"sample selected machine registers on interrupt,"
- " use -I ? to list register names", parse_regs),
+ " use '-I?' to list register names", parse_regs),
OPT_BOOLEAN(0, "running-time", &record.opts.running_time,
"Record running/enabled time of read (:S) events"),
OPT_CALLBACK('k', "clockid", &record.opts,