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Commit 62051200 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

[PATCH] lockdep: fix RT_HASH_LOCK_SZ 



On lockdep we have a quite big spinlock_t, so keep the size down.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent a0f1ccfd

net/ipv4/route.c

+14 −9
Original line number Diff line number Diff line
@@ -210,7 +210,11 @@ struct rt_hash_bucket { 
/*

 * Instead of using one spinlock for each rt_hash_bucket, we use a table of spinlocks

 * The size of this table is a power of two and depends on the number of CPUS.

 * (on lockdep we have a quite big spinlock_t, so keep the size down there)

 */

#ifdef CONFIG_LOCKDEP

# define RT_HASH_LOCK_SZ	256

#else

# if NR_CPUS >= 32

#  define RT_HASH_LOCK_SZ	4096

# elif NR_CPUS >= 16
@@ -222,6 +226,7 @@ struct rt_hash_bucket { 
# else

#  define RT_HASH_LOCK_SZ	256

# endif

#endif



static spinlock_t	*rt_hash_locks;

# define rt_hash_lock_addr(slot) &rt_hash_locks[(slot) & (RT_HASH_LOCK_SZ - 1)]