net: avoid an indirect call in ____sys_recvmsg()
CONFIG_RETPOLINE=y made indirect calls expensive. gcc seems to add an indirect call in ____sys_recvmsg(). Rewriting the code slightly makes sure to avoid this indirection. Alternative would be to not call sock_recvmsg() and instead use security_socket_recvmsg() and sock_recvmsg_nosec(), but this is less readable IMO. Signed-off-by:Eric Dumazet <edumazet@google.com> Cc: Paolo Abeni <pabeni@redhat.com> Cc: David Laight <David.Laight@aculab.com> Acked-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
462f8554
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