android_kernel_xiaomi_sm7250/net/irda
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
..
ircomm
irlan
irnet
af_irda.c [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
discovery.c
irda_device.c
iriap_event.c
iriap.c
irias_object.c
irlap_event.c
irlap_frame.c
irlap.c
irlmp_event.c
irlmp_frame.c
irlmp.c
irmod.c
irproc.c
irqueue.c
irsysctl.c
irttp.c
Kconfig
Makefile
parameters.c
qos.c
timer.c
wrapper.c