linux/net/bluetooth
Eric Dumazet 90ddc4f047 [NET]: move struct proto_ops to const
I noticed that some of 'struct proto_ops' used in the kernel may share
a cache line used by locks or other heavily modified data. (default
linker alignement is 32 bytes, and L1_CACHE_LINE is 64 or 128 at
least)

This patch makes sure a 'struct proto_ops' can be declared as const,
so that all cpus can share all parts of it without false sharing.

This is not mandatory : a driver can still use a read/write structure
if it needs to (and eventually a __read_mostly)

I made a global stubstitute to change all existing occurences to make
them const.

This should reduce the possibility of false sharing on SMP, and
speedup some socket system calls.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03 13:11:15 -08:00
..
bnep [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
cmtp [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
hidp [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
rfcomm [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
af_bluetooth.c [NET]: Avoid atomic xchg() for non-error case 2006-01-03 13:10:44 -08:00
hci_conn.c [PATCH] kill gratitious includes of major.h under net/* 2005-04-25 18:32:13 -07:00
hci_core.c [Bluetooth]: Add endian annotations to the core 2005-11-08 09:57:21 -08:00
hci_event.c [Bluetooth]: Add endian annotations to the core 2005-11-08 09:57:21 -08:00
hci_sock.c [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
hci_sysfs.c [Bluetooth]: Remove the usage of /proc completely 2005-11-08 09:57:38 -08:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
l2cap.c [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
lib.c [Bluetooth] Remove unused functions and cleanup symbol exports 2005-08-06 12:36:51 +02:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sco.c [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00