mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 04:06:50 +07:00
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>
184 lines
5.1 KiB
C
184 lines
5.1 KiB
C
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#include <linux/linkage.h>
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#include <linux/errno.h>
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#include <asm/unistd.h>
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/* we can't #include <linux/syscalls.h> here,
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but tell gcc to not warn with -Wmissing-prototypes */
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asmlinkage long sys_ni_syscall(void);
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/*
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* Non-implemented system calls get redirected here.
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*/
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asmlinkage long sys_ni_syscall(void)
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{
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return -ENOSYS;
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}
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cond_syscall(sys_nfsservctl);
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cond_syscall(sys_quotactl);
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cond_syscall(sys32_quotactl);
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cond_syscall(sys_acct);
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cond_syscall(sys_lookup_dcookie);
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cond_syscall(sys_swapon);
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cond_syscall(sys_swapoff);
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cond_syscall(sys_kexec_load);
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cond_syscall(compat_sys_kexec_load);
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cond_syscall(sys_init_module);
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cond_syscall(sys_delete_module);
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cond_syscall(sys_socketpair);
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cond_syscall(sys_bind);
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cond_syscall(sys_listen);
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cond_syscall(sys_accept);
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cond_syscall(sys_accept4);
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cond_syscall(sys_connect);
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cond_syscall(sys_getsockname);
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cond_syscall(sys_getpeername);
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cond_syscall(sys_sendto);
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cond_syscall(sys_send);
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cond_syscall(sys_recvfrom);
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cond_syscall(sys_recv);
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cond_syscall(sys_socket);
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cond_syscall(sys_setsockopt);
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cond_syscall(compat_sys_setsockopt);
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cond_syscall(sys_getsockopt);
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cond_syscall(compat_sys_getsockopt);
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cond_syscall(sys_shutdown);
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cond_syscall(sys_sendmsg);
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cond_syscall(compat_sys_sendmsg);
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cond_syscall(sys_recvmsg);
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cond_syscall(sys_recvmmsg);
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cond_syscall(compat_sys_recvmsg);
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cond_syscall(compat_sys_recvfrom);
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cond_syscall(compat_sys_recvmmsg);
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cond_syscall(sys_socketcall);
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cond_syscall(sys_futex);
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cond_syscall(compat_sys_futex);
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cond_syscall(sys_set_robust_list);
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cond_syscall(compat_sys_set_robust_list);
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cond_syscall(sys_get_robust_list);
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cond_syscall(compat_sys_get_robust_list);
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cond_syscall(sys_epoll_create);
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cond_syscall(sys_epoll_create1);
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cond_syscall(sys_epoll_ctl);
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cond_syscall(sys_epoll_wait);
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cond_syscall(sys_epoll_pwait);
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cond_syscall(compat_sys_epoll_pwait);
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cond_syscall(sys_semget);
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cond_syscall(sys_semop);
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cond_syscall(sys_semtimedop);
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cond_syscall(sys_semctl);
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cond_syscall(sys_msgget);
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cond_syscall(sys_msgsnd);
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cond_syscall(sys_msgrcv);
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cond_syscall(sys_msgctl);
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cond_syscall(sys_shmget);
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cond_syscall(sys_shmat);
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cond_syscall(sys_shmdt);
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cond_syscall(sys_shmctl);
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cond_syscall(sys_mq_open);
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cond_syscall(sys_mq_unlink);
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cond_syscall(sys_mq_timedsend);
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cond_syscall(sys_mq_timedreceive);
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cond_syscall(sys_mq_notify);
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cond_syscall(sys_mq_getsetattr);
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cond_syscall(compat_sys_mq_open);
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cond_syscall(compat_sys_mq_timedsend);
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cond_syscall(compat_sys_mq_timedreceive);
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cond_syscall(compat_sys_mq_notify);
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cond_syscall(compat_sys_mq_getsetattr);
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cond_syscall(sys_mbind);
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cond_syscall(sys_get_mempolicy);
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cond_syscall(sys_set_mempolicy);
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cond_syscall(compat_sys_mbind);
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cond_syscall(compat_sys_get_mempolicy);
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cond_syscall(compat_sys_set_mempolicy);
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cond_syscall(sys_add_key);
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cond_syscall(sys_request_key);
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cond_syscall(sys_keyctl);
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cond_syscall(compat_sys_keyctl);
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cond_syscall(compat_sys_socketcall);
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cond_syscall(sys_inotify_init);
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cond_syscall(sys_inotify_init1);
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cond_syscall(sys_inotify_add_watch);
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cond_syscall(sys_inotify_rm_watch);
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cond_syscall(sys_migrate_pages);
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cond_syscall(sys_move_pages);
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cond_syscall(sys_chown16);
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cond_syscall(sys_fchown16);
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cond_syscall(sys_getegid16);
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cond_syscall(sys_geteuid16);
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cond_syscall(sys_getgid16);
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cond_syscall(sys_getgroups16);
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cond_syscall(sys_getresgid16);
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cond_syscall(sys_getresuid16);
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cond_syscall(sys_getuid16);
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cond_syscall(sys_lchown16);
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cond_syscall(sys_setfsgid16);
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cond_syscall(sys_setfsuid16);
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cond_syscall(sys_setgid16);
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cond_syscall(sys_setgroups16);
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cond_syscall(sys_setregid16);
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cond_syscall(sys_setresgid16);
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cond_syscall(sys_setresuid16);
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cond_syscall(sys_setreuid16);
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cond_syscall(sys_setuid16);
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cond_syscall(sys_vm86old);
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cond_syscall(sys_vm86);
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cond_syscall(compat_sys_ipc);
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cond_syscall(compat_sys_sysctl);
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cond_syscall(sys_flock);
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cond_syscall(sys_io_setup);
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cond_syscall(sys_io_destroy);
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cond_syscall(sys_io_submit);
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cond_syscall(sys_io_cancel);
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cond_syscall(sys_io_getevents);
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cond_syscall(sys_syslog);
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/* arch-specific weak syscall entries */
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cond_syscall(sys_pciconfig_read);
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cond_syscall(sys_pciconfig_write);
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cond_syscall(sys_pciconfig_iobase);
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cond_syscall(sys32_ipc);
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cond_syscall(sys32_sysctl);
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cond_syscall(ppc_rtas);
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cond_syscall(sys_spu_run);
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cond_syscall(sys_spu_create);
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cond_syscall(sys_subpage_prot);
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/* mmu depending weak syscall entries */
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cond_syscall(sys_mprotect);
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cond_syscall(sys_msync);
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cond_syscall(sys_mlock);
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cond_syscall(sys_munlock);
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cond_syscall(sys_mlockall);
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cond_syscall(sys_munlockall);
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cond_syscall(sys_mincore);
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cond_syscall(sys_madvise);
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cond_syscall(sys_mremap);
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cond_syscall(sys_remap_file_pages);
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cond_syscall(compat_sys_move_pages);
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cond_syscall(compat_sys_migrate_pages);
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/* block-layer dependent */
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cond_syscall(sys_bdflush);
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cond_syscall(sys_ioprio_set);
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cond_syscall(sys_ioprio_get);
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/* New file descriptors */
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cond_syscall(sys_signalfd);
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cond_syscall(sys_signalfd4);
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cond_syscall(compat_sys_signalfd);
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cond_syscall(compat_sys_signalfd4);
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cond_syscall(sys_timerfd_create);
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cond_syscall(sys_timerfd_settime);
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cond_syscall(sys_timerfd_gettime);
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cond_syscall(compat_sys_timerfd_settime);
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cond_syscall(compat_sys_timerfd_gettime);
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cond_syscall(sys_eventfd);
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cond_syscall(sys_eventfd2);
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/* performance counters: */
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cond_syscall(sys_perf_event_open);
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