1 files changed, 23 insertions, 29 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index eae1f676f87..0600f0fbe32 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1438,11 +1438,11 @@ EXPORT_SYMBOL_GPL(inet_ctl_sock_create);
 unsigned long snmp_fold_field(void __percpu *mib[], int offt)
 {
 	unsigned long res = 0;
-	int i;
+	int i, j;
 
 	for_each_possible_cpu(i) {
-		res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
-		res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
+		for (j = 0; j < SNMP_ARRAY_SZ; j++)
+			res += *(((unsigned long *) per_cpu_ptr(mib[j], i)) + offt);
 	}
 	return res;
 }
@@ -1456,28 +1456,19 @@ u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
 	int cpu;
 
 	for_each_possible_cpu(cpu) {
-		void *bhptr, *userptr;
+		void *bhptr;
 		struct u64_stats_sync *syncp;
-		u64 v_bh, v_user;
+		u64 v;
 		unsigned int start;
 
-		/* first mib used by softirq context, we must use _bh() accessors */
-		bhptr = per_cpu_ptr(SNMP_STAT_BHPTR(mib), cpu);
+		bhptr = per_cpu_ptr(mib[0], cpu);
 		syncp = (struct u64_stats_sync *)(bhptr + syncp_offset);
 		do {
 			start = u64_stats_fetch_begin_bh(syncp);
-			v_bh = *(((u64 *) bhptr) + offt);
+			v = *(((u64 *) bhptr) + offt);
 		} while (u64_stats_fetch_retry_bh(syncp, start));
 
-		/* second mib used in USER context */
-		userptr = per_cpu_ptr(SNMP_STAT_USRPTR(mib), cpu);
-		syncp = (struct u64_stats_sync *)(userptr + syncp_offset);
-		do {
-			start = u64_stats_fetch_begin(syncp);
-			v_user = *(((u64 *) userptr) + offt);
-		} while (u64_stats_fetch_retry(syncp, start));
-
-		res += v_bh + v_user;
+		res += v;
 	}
 	return res;
 }
@@ -1489,25 +1480,28 @@ int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align)
 	BUG_ON(ptr == NULL);
 	ptr[0] = __alloc_percpu(mibsize, align);
 	if (!ptr[0])
-		goto err0;
+		return -ENOMEM;
+#if SNMP_ARRAY_SZ == 2
 	ptr[1] = __alloc_percpu(mibsize, align);
-	if (!ptr[1])
-		goto err1;
+	if (!ptr[1]) {
+		free_percpu(ptr[0]);
+		ptr[0] = NULL;
+		return -ENOMEM;
+	}
+#endif
 	return 0;
-err1:
-	free_percpu(ptr[0]);
-	ptr[0] = NULL;
-err0:
-	return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(snmp_mib_init);
 
-void snmp_mib_free(void __percpu *ptr[2])
+void snmp_mib_free(void __percpu *ptr[SNMP_ARRAY_SZ])
 {
+	int i;
+
 	BUG_ON(ptr == NULL);
-	free_percpu(ptr[0]);
-	free_percpu(ptr[1]);
-	ptr[0] = ptr[1] = NULL;
+	for (i = 0; i < SNMP_ARRAY_SZ; i++) {
+		free_percpu(ptr[i]);
+		ptr[i] = NULL;
+	}
 }
 EXPORT_SYMBOL_GPL(snmp_mib_free);