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[INET]: Shrink struct inet_ehash_bucket on 32 bits UP

No need to align struct inet_ehash_bucket on a 8 bytes boundary.

On 32 bits Uniprocessor, that's a waste of 4 bytes per struct (50 %)

On other platforms, the attribute is useless, natual alignement is already 8.

platform     | Size before | Size after patch
-------------+-------------+------------------
32 bits, UP  |         8   |     4
32 bits, SMP |         8   |     8
64 bits, UP  |         8   |     8
64 bits, SMP |        16   |    16

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet 20 tahun lalu
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6d2553612f
1 mengubah file dengan 1 tambahan dan 1 penghapusan
  1. 1 1
      include/net/inet_hashtables.h

+ 1 - 1
include/net/inet_hashtables.h

@@ -40,7 +40,7 @@
 struct inet_ehash_bucket {
 	rwlock_t	  lock;
 	struct hlist_head chain;
-} __attribute__((__aligned__(8)));
+};
 
 /* There are a few simple rules, which allow for local port reuse by
  * an application.  In essence: