mirror of https://gitee.com/openkylin/linux.git
a2e2725541
Meaning receive multiple messages, reducing the number of syscalls and net stack entry/exit operations. Next patches will introduce mechanisms where protocols that want to optimize this operation will provide an unlocked_recvmsg operation. This takes into account comments made by: . Paul Moore: sock_recvmsg is called only for the first datagram, sock_recvmsg_nosec is used for the rest. . Caitlin Bestler: recvmmsg now has a struct timespec timeout, that works in the same fashion as the ppoll one. If the underlying protocol returns a datagram with MSG_OOB set, this will make recvmmsg return right away with as many datagrams (+ the OOB one) it has received so far. . Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen datagrams and then recvmsg returns an error, recvmmsg will return the successfully received datagrams, store the error and return it in the next call. This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg, where we will be able to acquire the lock only at batch start and end, not at every underlying recvmsg call. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| .. | ||
| boot | ||
| configs | ||
| include/asm | ||
| kernel | ||
| lib | ||
| mach-bf518 | ||
| mach-bf527 | ||
| mach-bf533 | ||
| mach-bf537 | ||
| mach-bf538 | ||
| mach-bf548 | ||
| mach-bf561 | ||
| mach-common | ||
| mm | ||
| oprofile | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||