forked from luck/tmp_suning_uos_patched
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> |
||
|---|---|---|
| .. | ||
| .gitignore | ||
| armksyms.c | ||
| arthur.c | ||
| asm-offsets.c | ||
| atags.c | ||
| atags.h | ||
| bios32.c | ||
| calls.S | ||
| compat.c | ||
| compat.h | ||
| crunch-bits.S | ||
| crunch.c | ||
| debug.S | ||
| dma-isa.c | ||
| dma.c | ||
| ecard.c | ||
| ecard.h | ||
| elf.c | ||
| entry-armv.S | ||
| entry-common.S | ||
| entry-header.S | ||
| fiq.c | ||
| ftrace.c | ||
| head-common.S | ||
| head-nommu.S | ||
| head.S | ||
| init_task.c | ||
| io.c | ||
| irq.c | ||
| isa.c | ||
| iwmmxt.S | ||
| kgdb.c | ||
| kprobes-decode.c | ||
| kprobes.c | ||
| machine_kexec.c | ||
| Makefile | ||
| module.c | ||
| process.c | ||
| ptrace.c | ||
| ptrace.h | ||
| relocate_kernel.S | ||
| return_address.c | ||
| setup.c | ||
| signal.c | ||
| signal.h | ||
| smp_scu.c | ||
| smp_twd.c | ||
| smp.c | ||
| stacktrace.c | ||
| sys_arm.c | ||
| sys_oabi-compat.c | ||
| tcm.c | ||
| tcm.h | ||
| thumbee.c | ||
| time.c | ||
| traps.c | ||
| unwind.c | ||
| vmlinux.lds.S | ||
| xscale-cp0.c | ||