Messages in this thread | | | Date | Fri, 08 Jun 2007 07:00:13 +0200 | From | Eric Dumazet <> | Subject | Re: [patch 1/8] fdmap v2 - fdmap core |
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Eric Dumazet a écrit : > > struct fd_map { > /* > * read mostly part > */ > unsigned int base; /* 0x00 */ > unsigned int size; /* 0x04 */ > struct list_head slist; /* 0x08 */ > struct list_head *slots; /* 0x18 */ > unsigned long *map; /* 0x28 */ > void (*freecb)(void *, struct fd_map *); /* 0x30 */ > void *freecb_priv; /* 0x38 */ > > /* > * written part on a separate cache line in SMP > */ > unsigned int fdnext ____cacheline_aligned_in_smp; /* 0x40 */ > > struct fd_map *next; /* 0x48 */ > struct rcu_head rcu; /* 0x50 */ > };
Well, offsets are wrong but layout OK
struct fd_map { /* * read mostly part */ unsigned int base; /* 0x00 */ unsigned int size; /* 0x04 */ struct list_head slist; /* 0x08 */ struct list_head *slots; /* 0x18 */ unsigned long *map; /* 0x20 */ void (*freecb)(void *, struct fd_map *); /* 0x28 */ void *freecb_priv; /* 0x30 */ /* one 8 bytes hole */
/* * written part on a separate cache line in SMP */ unsigned int fdnext ____cacheline_aligned_in_smp; /* 0x40 */
struct fd_map *next; /* 0x48 */ struct rcu_head rcu; /* 0x50 */ }; /* size 0x60 , aligned to 0x80 */
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