![]() 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> |
||
---|---|---|
.. | ||
af_x25.c | ||
Kconfig | ||
Makefile | ||
sysctl_net_x25.c | ||
x25_dev.c | ||
x25_facilities.c | ||
x25_in.c | ||
x25_link.c | ||
x25_out.c | ||
x25_proc.c | ||
x25_route.c | ||
x25_subr.c | ||
x25_timer.c |