[IPV4]: Use the fancy alloc_large_system_hash() function for route hash table
- rt hash table allocated using alloc_large_system_hash() function.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index daf82f8..9fcbb1b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -71,6 +71,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/bootmem.h>
#include <linux/string.h>
#include <linux/socket.h>
#include <linux/sockios.h>
@@ -3103,12 +3104,14 @@
int __init ip_rt_init(void)
{
- int order, goal, rc = 0;
+ int rc = 0;
rt_hash_rnd = (int) ((num_physpages ^ (num_physpages>>8)) ^
(jiffies ^ (jiffies >> 7)));
#ifdef CONFIG_NET_CLS_ROUTE
+ {
+ int order;
for (order = 0;
(PAGE_SIZE << order) < 256 * sizeof(struct ip_rt_acct) * NR_CPUS; order++)
/* NOTHING */;
@@ -3116,6 +3119,7 @@
if (!ip_rt_acct)
panic("IP: failed to allocate ip_rt_acct\n");
memset(ip_rt_acct, 0, PAGE_SIZE << order);
+ }
#endif
ipv4_dst_ops.kmem_cachep = kmem_cache_create("ip_dst_cache",
@@ -3126,32 +3130,17 @@
if (!ipv4_dst_ops.kmem_cachep)
panic("IP: failed to allocate ip_dst_cache\n");
- goal = num_physpages >> (26 - PAGE_SHIFT);
- if (rhash_entries)
- goal = (rhash_entries * sizeof(struct rt_hash_bucket)) >> PAGE_SHIFT;
- for (order = 0; (1UL << order) < goal; order++)
- /* NOTHING */;
-
- do {
- rt_hash_mask = (1UL << order) * PAGE_SIZE /
- sizeof(struct rt_hash_bucket);
- while (rt_hash_mask & (rt_hash_mask - 1))
- rt_hash_mask--;
- rt_hash_table = (struct rt_hash_bucket *)
- __get_free_pages(GFP_ATOMIC, order);
- } while (rt_hash_table == NULL && --order > 0);
-
- if (!rt_hash_table)
- panic("Failed to allocate IP route cache hash table\n");
-
- printk(KERN_INFO "IP: routing cache hash table of %u buckets, %ldKbytes\n",
- rt_hash_mask,
- (long) (rt_hash_mask * sizeof(struct rt_hash_bucket)) / 1024);
-
- for (rt_hash_log = 0; (1 << rt_hash_log) != rt_hash_mask; rt_hash_log++)
- /* NOTHING */;
-
- rt_hash_mask--;
+ rt_hash_table = (struct rt_hash_bucket *)
+ alloc_large_system_hash("IP route cache",
+ sizeof(struct rt_hash_bucket),
+ rhash_entries,
+ (num_physpages >= 128 * 1024) ?
+ (27 - PAGE_SHIFT) :
+ (29 - PAGE_SHIFT),
+ HASH_HIGHMEM,
+ &rt_hash_log,
+ &rt_hash_mask,
+ 0);
memset(rt_hash_table, 0, (rt_hash_mask + 1) * sizeof(struct rt_hash_bucket));
rt_hash_lock_init();