38 	char *kbuf;  in user_input_str()  local
45 	kbuf = kmalloc(count + 1, GFP_KERNEL | __GFP_NOWARN);  in user_input_str()
46 	if (!kbuf)  in user_input_str()
49 	ret = simple_write_to_buffer(kbuf, count + 1, ppos, buf, count);  in user_input_str()
51 		kfree(kbuf);  in user_input_str()
54 	kbuf[ret] = '\0';  in user_input_str()
56 	return kbuf;  in user_input_str()
63 	char kbuf[128];  in dbgfs_attrs_read()  local
67 	ret = scnprintf(kbuf, ARRAY_SIZE(kbuf), "%lu %lu %lu %lu %lu\n",  in dbgfs_attrs_read()
73 	return simple_read_from_buffer(buf, count, ppos, kbuf, ret);  in dbgfs_attrs_read()
81 	char *kbuf;  in dbgfs_attrs_write()  local
84 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_attrs_write()
85 	if (IS_ERR(kbuf))  in dbgfs_attrs_write()
86 		return PTR_ERR(kbuf);  in dbgfs_attrs_write()
88 	if (sscanf(kbuf, "%lu %lu %lu %lu %lu",  in dbgfs_attrs_write()
109 	kfree(kbuf);  in dbgfs_attrs_write()
176 	char *kbuf;  in dbgfs_schemes_read()  local
179 	kbuf = kmalloc(count, GFP_KERNEL | __GFP_NOWARN);  in dbgfs_schemes_read()
180 	if (!kbuf)  in dbgfs_schemes_read()
184 	len = sprint_schemes(ctx, kbuf, count);  in dbgfs_schemes_read()
188 	len = simple_read_from_buffer(buf, count, ppos, kbuf, len);  in dbgfs_schemes_read()
191 	kfree(kbuf);  in dbgfs_schemes_read()
301 	char *kbuf;  in dbgfs_schemes_write()  local
305 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_schemes_write()
306 	if (IS_ERR(kbuf))  in dbgfs_schemes_write()
307 		return PTR_ERR(kbuf);  in dbgfs_schemes_write()
309 	schemes = str_to_schemes(kbuf, count, &nr_schemes);  in dbgfs_schemes_write()
329 	kfree(kbuf);  in dbgfs_schemes_write()
495 	char *kbuf;  in dbgfs_target_ids_write()  local
500 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_target_ids_write()
501 	if (IS_ERR(kbuf))  in dbgfs_target_ids_write()
502 		return PTR_ERR(kbuf);  in dbgfs_target_ids_write()
504 	if (!strncmp(kbuf, "paddr\n", count)) {  in dbgfs_target_ids_write()
510 		target_pids = str_to_pids(kbuf, count, &nr_targets);  in dbgfs_target_ids_write()
548 	kfree(kbuf);  in dbgfs_target_ids_write()
578 	char *kbuf;  in dbgfs_init_regions_read()  local
581 	kbuf = kmalloc(count, GFP_KERNEL | __GFP_NOWARN);  in dbgfs_init_regions_read()
582 	if (!kbuf)  in dbgfs_init_regions_read()
592 	len = sprint_init_regions(ctx, kbuf, count);  in dbgfs_init_regions_read()
596 	len = simple_read_from_buffer(buf, count, ppos, kbuf, len);  in dbgfs_init_regions_read()
599 	kfree(kbuf);  in dbgfs_init_regions_read()
673 	char *kbuf;  in dbgfs_init_regions_write()  local
677 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_init_regions_write()
678 	if (IS_ERR(kbuf))  in dbgfs_init_regions_write()
679 		return PTR_ERR(kbuf);  in dbgfs_init_regions_write()
687 	err = set_init_regions(ctx, kbuf, ret);  in dbgfs_init_regions_write()
693 	kfree(kbuf);  in dbgfs_init_regions_write()
701 	char *kbuf;  in dbgfs_kdamond_pid_read()  local
704 	kbuf = kmalloc(count, GFP_KERNEL | __GFP_NOWARN);  in dbgfs_kdamond_pid_read()
705 	if (!kbuf)  in dbgfs_kdamond_pid_read()
710 		len = scnprintf(kbuf, count, "%d\n", ctx->kdamond->pid);  in dbgfs_kdamond_pid_read()
712 		len = scnprintf(kbuf, count, "none\n");  in dbgfs_kdamond_pid_read()
716 	len = simple_read_from_buffer(buf, count, ppos, kbuf, len);  in dbgfs_kdamond_pid_read()
719 	kfree(kbuf);  in dbgfs_kdamond_pid_read()
813 	static const char kbuf[512] = DAMON_DBGFS_DEPRECATION_NOTICE;  in damon_dbgfs_deprecated_read()  local
815 	return simple_read_from_buffer(buf, count, ppos, kbuf, strlen(kbuf));  in damon_dbgfs_deprecated_read()
873 	char *kbuf;  in dbgfs_mk_context_write()  local
877 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_mk_context_write()
878 	if (IS_ERR(kbuf))  in dbgfs_mk_context_write()
879 		return PTR_ERR(kbuf);  in dbgfs_mk_context_write()
882 		kfree(kbuf);  in dbgfs_mk_context_write()
887 	if (sscanf(kbuf, "%s", ctx_name) != 1) {  in dbgfs_mk_context_write()
899 	kfree(kbuf);  in dbgfs_mk_context_write()
979 	char *kbuf;  in dbgfs_rm_context_write()  local
983 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_rm_context_write()
984 	if (IS_ERR(kbuf))  in dbgfs_rm_context_write()
985 		return PTR_ERR(kbuf);  in dbgfs_rm_context_write()
988 		kfree(kbuf);  in dbgfs_rm_context_write()
993 	if (sscanf(kbuf, "%s", ctx_name) != 1) {  in dbgfs_rm_context_write()
1005 	kfree(kbuf);  in dbgfs_rm_context_write()
1026 	char *kbuf;  in dbgfs_monitor_on_write()  local
1028 	kbuf = user_input_str(buf, count, ppos);  in dbgfs_monitor_on_write()
1029 	if (IS_ERR(kbuf))  in dbgfs_monitor_on_write()
1030 		return PTR_ERR(kbuf);  in dbgfs_monitor_on_write()
1033 	if (sscanf(kbuf, "%s", kbuf) != 1) {  in dbgfs_monitor_on_write()
1034 		kfree(kbuf);  in dbgfs_monitor_on_write()
1039 	if (!strncmp(kbuf, "on", count)) {  in dbgfs_monitor_on_write()
1044 				kfree(kbuf);  in dbgfs_monitor_on_write()
1050 	} else if (!strncmp(kbuf, "off", count)) {  in dbgfs_monitor_on_write()
1059 	kfree(kbuf);  in dbgfs_monitor_on_write()