334 	if (!top->record_opts.overwrite &&  in perf_top__print_sym_table()
649 				       &top->session->header.env, !top->record_opts.overwrite);  in display_thread_tui()
883 	md = opts->overwrite ? &evlist->overwrite_mmap[idx] : &evlist->mmap[idx];  in perf_top__mmap_read_idx()
913 	bool overwrite = top->record_opts.overwrite;  in perf_top__mmap_read()  local
917 	if (overwrite)  in perf_top__mmap_read()
923 	if (overwrite) {  in perf_top__mmap_read()
930  * Check per-event overwrite term.
936  *   E.g. "cpu/cpu-cycles,no-overwrite/,cpu/instructions,no-overwrite/
937  *   Using the per-event setting to replace the opts->overwrite if
940  *   E.g. "cpu/cpu-cycles,overwrite/,cpu/instructions,no-overwrite/"
943  *   E.g. "cpu/cpu-cycles/,cpu/instructions,no-overwrite/"
953 	int set, overwrite = -1;  in perf_top__overwrite_check()  local
960 				set = term->val.overwrite ? 1 : 0;  in perf_top__overwrite_check()
964 		if ((overwrite < 0) && (set < 0))  in perf_top__overwrite_check()
968 		if ((overwrite >= 0) && (set >= 0) && (overwrite != set))  in perf_top__overwrite_check()
972 		if ((overwrite >= 0) && (set < 0))  in perf_top__overwrite_check()
976 		if ((overwrite < 0) && (set >= 0)) {  in perf_top__overwrite_check()
977 			/* if it's first event, set overwrite */  in perf_top__overwrite_check()
979 				overwrite = set;  in perf_top__overwrite_check()
985 	if ((overwrite >= 0) && (opts->overwrite != overwrite))  in perf_top__overwrite_check()
986 		opts->overwrite = overwrite;  in perf_top__overwrite_check()
998 	if (!opts->overwrite)  in perf_top_overwrite_fallback()
1007 	opts->overwrite = false;  in perf_top_overwrite_fallback()
1008 	pr_debug2("fall back to non-overwrite mode\n");  in perf_top_overwrite_fallback()
1021 			  "overwrite setting for all events\n");  in perf_top__start_counters()
1033 			 * Specially handle overwrite fall back.  in perf_top__start_counters()
1035 			 * overwrite mode by default, support  in perf_top__start_counters()
1036 			 * both overwrite and non-overwrite mode, and  in perf_top__start_counters()
1359 		if (opts->overwrite || (hits == top->samples))  in __cmd_top()
1450 			 * separate evlist with a dummy event, i.e. a non-overwrite  in cmd_top()
1452 			 * stays in overwrite mode. -acme  in cmd_top()
1454 			.overwrite	= 0,  in cmd_top()
1587 	OPT_BOOLEAN(0, "overwrite", &top.record_opts.overwrite,  in cmd_top()