forked from luck/tmp_suning_uos_patched
90ddc4f047
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> |
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addr.c | ||
addr.h | ||
atm_misc.c | ||
br2684.c | ||
clip.c | ||
common.c | ||
common.h | ||
ioctl.c | ||
ipcommon.c | ||
ipcommon.h | ||
Kconfig | ||
lec_arpc.h | ||
lec.c | ||
lec.h | ||
Makefile | ||
mpc.c | ||
mpc.h | ||
mpoa_caches.c | ||
mpoa_caches.h | ||
mpoa_proc.c | ||
pppoatm.c | ||
proc.c | ||
protocols.h | ||
pvc.c | ||
raw.c | ||
resources.c | ||
resources.h | ||
signaling.c | ||
signaling.h | ||
svc.c |