diff --git a/activate.c b/activate.c
index 2812976..ab9702d 100644
--- a/activate.c
+++ b/activate.c
@@ -36,22 +36,10 @@ static int check_affinity(struct irq_info *info, cpumask_t applied_mask)
 {
 	cpumask_t current_mask;
 	char buf[PATH_MAX];
-	char *line = NULL;
-	size_t size = 0;
-	FILE *file;
 
 	sprintf(buf, "/proc/irq/%i/smp_affinity", info->irq);
-	file = fopen(buf, "r");
-	if (!file)
+	if (process_one_line(buf, get_mask_from_bitmap, &current_mask) < 0)
 		return 1;
-	if (getline(&line, &size, file)<=0) {
-		free(line);
-		fclose(file);
-		return 1;
-	}
-	cpumask_parse_user(line, strlen(line), current_mask);
-	fclose(file);
-	free(line);
 
 	return cpus_equal(applied_mask, current_mask);
 }
diff --git a/classify.c b/classify.c
index be1ad0c..c1ac230 100644
--- a/classify.c
+++ b/classify.c
@@ -350,10 +350,7 @@ static struct irq_info *add_one_irq_to_db(const char *devpath, struct irq_info *
 	int numa_node;
 	char path[PATH_MAX];
 	FILE *fd;
-	char *lcpu_mask;
 	GList *entry;
-	ssize_t ret;
-	size_t blen;
 
 	/*
 	 * First check to make sure this isn't a duplicate entry
@@ -409,23 +406,11 @@ get_numa_node:
 	else
 		new->numa_node = get_numa_node(numa_node);
 
-	sprintf(path, "%s/local_cpus", devpath);
-	fd = fopen(path, "r");
-	if (!fd) {
-		cpus_setall(new->cpumask);
-		goto out;
-	}
-	lcpu_mask = NULL;
-	ret = getline(&lcpu_mask, &blen, fd);
-	fclose(fd);
-	if (ret <= 0) {
-		cpus_setall(new->cpumask);
-	} else {
-		cpumask_parse_user(lcpu_mask, ret, new->cpumask);
-	}
-	free(lcpu_mask);
+	cpus_setall(new->cpumask);
+
+	sprintf(path, "%s/local_cpus", devpath);
+	process_one_line(path, get_mask_from_bitmap, &new->cpumask);
 
-out:
 	log(TO_CONSOLE, LOG_INFO, "Adding IRQ %d to database\n", irq);
 	return new;
 }
diff --git a/cputree.c b/cputree.c
index 8b9413b..acf6a47 100644
--- a/cputree.c
+++ b/cputree.c
@@ -59,6 +59,37 @@ cpumask_t cpu_possible_map;
 */
 cpumask_t unbanned_cpus;
 
+int process_one_line(char *path, void (*cb)(char *line, void *data), void *data)
+{
+	FILE *file;
+	char *line = NULL;
+	size_t size = 0;
+	int ret = -1;
+
+	file = fopen(path, "r");
+	if (!file)
+		return ret;
+
+	if (getline(&line, &size, file) > 0) {
+		cb(line, data);
+		ret = 0;
+	}
+	free(line);
+	fclose(file);
+	return ret;
+}
+
+void get_mask_from_bitmap(char *line, void *mask)
+{
+	cpumask_parse_user(line, strlen(line), *(cpumask_t *)mask);
+}
+
+static void get_mask_from_cpulist(char *line, void *mask)
+{
+	if (strlen(line) && line[0] != '\n')
+		cpulist_parse(line, strlen(line), *(cpumask_t *)mask);
+}
+
 /*
  * By default do not place IRQs on CPUs the kernel keeps isolated or
  * nohz_full, as specified through the boot commandline. Users can
@@ -66,9 +97,7 @@ cpumask_t unbanned_cpus;
  */
 static void setup_banned_cpus(void)
 {
-	FILE *file;
-	char *line = NULL;
-	size_t size = 0;
+	char *path = NULL;
 	char buffer[4096];
 	cpumask_t nohz_full;
 	cpumask_t isolated_cpus;
@@ -86,29 +115,12 @@ static void setup_banned_cpus(void)
 		cpumask_parse_user(getenv("IRQBALANCE_BANNED_CPUS"), strlen(getenv("IRQBALANCE_BANNED_CPUS")), banned_cpus);
 		goto out;
 	}
-	file = fopen("/sys/devices/system/cpu/isolated", "r");
-	if (file) {
-		if (getline(&line, &size, file) > 0) {
-			if (strlen(line) && line[0] != '\n')
-				cpulist_parse(line, strlen(line), isolated_cpus);
-		}
-		free(line);
-		line = NULL;
-		size = 0;
-		fclose(file);
-	}
 
-	file = fopen("/sys/devices/system/cpu/nohz_full", "r");
-	if (file) {
-		if (getline(&line, &size, file) > 0) {
-			if (strlen(line) && line[0] != '\n')
-				cpulist_parse(line, strlen(line), nohz_full);
-		}
-		free(line);
-		line = NULL;
-		size = 0;
-		fclose(file);
-	}
+	path = "/sys/devices/system/cpu/isolated";
+	process_one_line(path, get_mask_from_cpulist, &isolated_cpus);
+
+	path = "/sys/devices/system/cpu/nohz_full";
+	process_one_line(path, get_mask_from_cpulist, &nohz_full);
 
 	cpus_or(banned_cpus, nohz_full, isolated_cpus);
 
@@ -258,11 +270,24 @@ static struct topo_obj* add_cpu_to_cache_domain(struct topo_obj *cpu,
 	return cache;
 }
 
+static void get_offline_status(char *line, void *data)
+{
+	int *status = (int *)data;
+
+	*status = (line && line[0] == '0') ? 1 : 0;
+}
+
+static void get_packageid(char *line, void *data)
+{
+	int *packageid = (int *)data;
+
+	*packageid = strtoul(line, NULL, 10);
+}
+
 #define ADJ_SIZE(r,s) PATH_MAX-strlen(r)-strlen(#s) 
 static void do_one_cpu(char *path)
 {
 	struct topo_obj *cpu;
-	FILE *file;
 	char new_path[PATH_MAX];
 	cpumask_t cache_mask, package_mask;
 	struct topo_obj *cache;
@@ -271,21 +296,13 @@ static void do_one_cpu(char *path)
 	int nodeid;
 	int packageid = 0;
 	unsigned int max_cache_index, cache_index, cache_stat;
-	int ret = 1;
+	int offline_status = 0;
 
 	/* skip offline cpus */
 	snprintf(new_path, ADJ_SIZE(path,"/online"), "%s/online", path);
-	file = fopen(new_path, "r");
-	if (file) {
-		char *line = NULL;
-		size_t size = 0;
-		if (getline(&line, &size, file)>0)
-			ret = (line && line[0]=='0') ? 1 : 0;
-		fclose(file);
-		free(line);
-		if (ret)
-			return;
-	}
+	process_one_line(new_path, get_offline_status, &offline_status);
+	if (offline_status)
+		return;
 
 	cpu = calloc(sizeof(struct topo_obj), 1);
 	if (!cpu)
@@ -313,36 +330,17 @@ static void do_one_cpu(char *path)
 		return;
 	}
 
+	cpu_set(cpu->number, package_mask);
 
 	/* try to read the package mask; if it doesn't exist assume solitary */
 	snprintf(new_path, ADJ_SIZE(path, "/topology/core_siblings"),
 		 "%s/topology/core_siblings", path);
-	file = fopen(new_path, "r");
-	cpu_set(cpu->number, package_mask);
-	if (file) {
-		char *line = NULL;
-		size_t size = 0;
-		if (getline(&line, &size, file) > 0)
-			cpumask_parse_user(line, strlen(line), package_mask);
-		fclose(file);
-		free(line);
-		line = NULL;
-		size = 0;
-	}
+	process_one_line(new_path, get_mask_from_bitmap, &package_mask);
+
 	/* try to read the package id */
 	snprintf(new_path, ADJ_SIZE(path, "/topology/physical_package_id"),
 		 "%s/topology/physical_package_id", path);
-	file = fopen(new_path, "r");
-	if (file) {
-		char *line = NULL;
-		size_t size = 0;
-		if (getline(&line, &size, file) > 0)
-			packageid = strtoul(line, NULL, 10);
-		fclose(file);
-		free(line);
-		line = NULL;
-		size = 0;
-	}
+	process_one_line(new_path, get_packageid, &packageid);
 
 	/* try to read the cache mask; if it doesn't exist assume solitary */
 	/* We want the deepest cache level available */
@@ -367,17 +365,7 @@ static void do_one_cpu(char *path)
 		/* Extra 10 subtraction is for the max character length of %d */
 		snprintf(new_path, ADJ_SIZE(path, "/cache/index%d/shared_cpu_map") - 10,
 			 "%s/cache/index%d/shared_cpu_map", path, max_cache_index);
-		file = fopen(new_path, "r");
-		if (file) {
-			char *line = NULL;
-			size_t size = 0;
-			if (getline(&line, &size, file) > 0)
-				cpumask_parse_user(line, strlen(line), cache_mask);
-			fclose(file);
-			free(line);
-			line = NULL;
-			size = 0;
-		}
+		process_one_line(new_path, get_mask_from_bitmap, &cache_mask);
 	}
 
 	nodeid=-1;
diff --git a/irqbalance.h b/irqbalance.h
index 5895e34..a3e561e 100644
--- a/irqbalance.h
+++ b/irqbalance.h
@@ -160,5 +160,8 @@ extern unsigned int log_mask;
 #define SOCKET_PATH "irqbalance"
 #define SOCKET_TMPFS "/run/irqbalance/"
 
+extern int process_one_line(char *path, void (*cb)(char *line, void *data), void *data);
+extern void get_mask_from_bitmap(char *line, void *mask);
+
 #endif /* __INCLUDE_GUARD_IRQBALANCE_H_ */
 
diff --git a/numa.c b/numa.c
index 542e1f4..f1284da 100644
--- a/numa.c
+++ b/numa.c
@@ -56,31 +56,15 @@ static void add_one_node(const char *nodename)
 {
 	char path[PATH_MAX];
 	struct topo_obj *new;
-	char *cpustr = NULL;
-	FILE *f;
-	ssize_t ret;
-	size_t blen;
 
 	new = calloc(1, sizeof(struct topo_obj));
 	if (!new)
 		return;
+
+	cpus_clear(new->mask);
 	sprintf(path, "%s/%s/cpumap", SYSFS_NODE_PATH, nodename);
-	f = fopen(path, "r");
-	if (!f) {
-		free(new);
-		return;
-	}
-	if (ferror(f)) {
-		cpus_clear(new->mask);
-	} else {
-		ret = getline(&cpustr, &blen, f);
-		if (ret <= 0)
-			cpus_clear(new->mask);
-		else
-			cpumask_parse_user(cpustr, ret, new->mask);
-		free(cpustr);
-	}
-	fclose(f);
+	process_one_line(path, get_mask_from_bitmap, &new->mask);
+
 	new->obj_type = OBJ_TYPE_NODE;	
 	new->number = strtoul(&nodename[4], NULL, 10);
 	new->obj_type_list = &numa_nodes;