2005-05-01 15:58:55 +00:00
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ENTRY(sys_call_table)
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.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
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.long sys_exit
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.long sys_fork
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.long sys_read
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.long sys_write
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.long sys_open /* 5 */
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.long sys_close
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.long sys_waitpid
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.long sys_creat
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.long sys_link
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.long sys_unlink /* 10 */
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.long sys_execve
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.long sys_chdir
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.long sys_time
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.long sys_mknod
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.long sys_chmod /* 15 */
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.long sys_lchown16
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.long sys_ni_syscall /* old break syscall holder */
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.long sys_stat
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.long sys_lseek
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.long sys_getpid /* 20 */
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.long sys_mount
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.long sys_oldumount
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.long sys_setuid16
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.long sys_getuid16
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.long sys_stime /* 25 */
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.long sys_ptrace
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.long sys_alarm
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.long sys_fstat
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.long sys_pause
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.long sys_utime /* 30 */
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.long sys_ni_syscall /* old stty syscall holder */
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.long sys_ni_syscall /* old gtty syscall holder */
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.long sys_access
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.long sys_nice
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.long sys_ni_syscall /* 35 - old ftime syscall holder */
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.long sys_sync
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.long sys_kill
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.long sys_rename
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.long sys_mkdir
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.long sys_rmdir /* 40 */
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.long sys_dup
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.long sys_pipe
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.long sys_times
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.long sys_ni_syscall /* old prof syscall holder */
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.long sys_brk /* 45 */
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.long sys_setgid16
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.long sys_getgid16
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.long sys_signal
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.long sys_geteuid16
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.long sys_getegid16 /* 50 */
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.long sys_acct
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.long sys_umount /* recycled never used phys() */
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.long sys_ni_syscall /* old lock syscall holder */
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.long sys_ioctl
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.long sys_fcntl /* 55 */
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.long sys_ni_syscall /* old mpx syscall holder */
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.long sys_setpgid
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.long sys_ni_syscall /* old ulimit syscall holder */
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.long sys_olduname
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.long sys_umask /* 60 */
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.long sys_chroot
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.long sys_ustat
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.long sys_dup2
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.long sys_getppid
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.long sys_getpgrp /* 65 */
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.long sys_setsid
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.long sys_sigaction
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.long sys_sgetmask
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.long sys_ssetmask
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.long sys_setreuid16 /* 70 */
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.long sys_setregid16
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.long sys_sigsuspend
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.long sys_sigpending
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.long sys_sethostname
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.long sys_setrlimit /* 75 */
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.long sys_old_getrlimit
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.long sys_getrusage
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.long sys_gettimeofday
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.long sys_settimeofday
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.long sys_getgroups16 /* 80 */
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.long sys_setgroups16
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.long old_select
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.long sys_symlink
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.long sys_lstat
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.long sys_readlink /* 85 */
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.long sys_uselib
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.long sys_swapon
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.long sys_reboot
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.long old_readdir
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.long old_mmap /* 90 */
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.long sys_munmap
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.long sys_truncate
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.long sys_ftruncate
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.long sys_fchmod
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.long sys_fchown16 /* 95 */
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.long sys_getpriority
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.long sys_setpriority
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.long sys_ni_syscall /* old profil syscall holder */
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.long sys_statfs
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.long sys_fstatfs /* 100 */
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.long sys_ioperm
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.long sys_socketcall
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.long sys_syslog
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.long sys_setitimer
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.long sys_getitimer /* 105 */
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.long sys_newstat
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.long sys_newlstat
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.long sys_newfstat
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.long sys_uname
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.long sys_iopl /* 110 */
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.long sys_vhangup
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.long sys_ni_syscall /* old "idle" system call */
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.long sys_vm86old
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.long sys_wait4
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.long sys_swapoff /* 115 */
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.long sys_sysinfo
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.long sys_ipc
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.long sys_fsync
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.long sys_sigreturn
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.long sys_clone /* 120 */
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.long sys_setdomainname
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.long sys_newuname
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.long sys_modify_ldt
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.long sys_adjtimex
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.long sys_mprotect /* 125 */
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.long sys_sigprocmask
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.long sys_ni_syscall /* old "create_module" */
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.long sys_init_module
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.long sys_delete_module
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.long sys_ni_syscall /* 130: old "get_kernel_syms" */
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.long sys_quotactl
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.long sys_getpgid
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.long sys_fchdir
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.long sys_bdflush
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.long sys_sysfs /* 135 */
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.long sys_personality
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.long sys_ni_syscall /* reserved for afs_syscall */
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.long sys_setfsuid16
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.long sys_setfsgid16
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.long sys_llseek /* 140 */
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.long sys_getdents
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.long sys_select
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.long sys_flock
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.long sys_msync
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.long sys_readv /* 145 */
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.long sys_writev
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.long sys_getsid
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.long sys_fdatasync
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.long sys_sysctl
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.long sys_mlock /* 150 */
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.long sys_munlock
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.long sys_mlockall
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.long sys_munlockall
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.long sys_sched_setparam
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.long sys_sched_getparam /* 155 */
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.long sys_sched_setscheduler
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.long sys_sched_getscheduler
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.long sys_sched_yield
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.long sys_sched_get_priority_max
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.long sys_sched_get_priority_min /* 160 */
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.long sys_sched_rr_get_interval
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.long sys_nanosleep
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.long sys_mremap
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.long sys_setresuid16
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.long sys_getresuid16 /* 165 */
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.long sys_vm86
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.long sys_ni_syscall /* Old sys_query_module */
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.long sys_poll
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.long sys_nfsservctl
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.long sys_setresgid16 /* 170 */
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.long sys_getresgid16
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.long sys_prctl
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.long sys_rt_sigreturn
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.long sys_rt_sigaction
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.long sys_rt_sigprocmask /* 175 */
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.long sys_rt_sigpending
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.long sys_rt_sigtimedwait
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.long sys_rt_sigqueueinfo
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.long sys_rt_sigsuspend
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.long sys_pread64 /* 180 */
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.long sys_pwrite64
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.long sys_chown16
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.long sys_getcwd
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.long sys_capget
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.long sys_capset /* 185 */
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.long sys_sigaltstack
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.long sys_sendfile
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.long sys_ni_syscall /* reserved for streams1 */
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.long sys_ni_syscall /* reserved for streams2 */
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.long sys_vfork /* 190 */
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.long sys_getrlimit
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.long sys_mmap2
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.long sys_truncate64
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.long sys_ftruncate64
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.long sys_stat64 /* 195 */
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.long sys_lstat64
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.long sys_fstat64
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.long sys_lchown
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.long sys_getuid
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.long sys_getgid /* 200 */
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.long sys_geteuid
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.long sys_getegid
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.long sys_setreuid
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.long sys_setregid
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.long sys_getgroups /* 205 */
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.long sys_setgroups
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.long sys_fchown
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.long sys_setresuid
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.long sys_getresuid
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.long sys_setresgid /* 210 */
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.long sys_getresgid
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.long sys_chown
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.long sys_setuid
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.long sys_setgid
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.long sys_setfsuid /* 215 */
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.long sys_setfsgid
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.long sys_pivot_root
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.long sys_mincore
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.long sys_madvise
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.long sys_getdents64 /* 220 */
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.long sys_fcntl64
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.long sys_ni_syscall /* reserved for TUX */
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.long sys_ni_syscall
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.long sys_gettid
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.long sys_readahead /* 225 */
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.long sys_setxattr
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.long sys_lsetxattr
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.long sys_fsetxattr
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.long sys_getxattr
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.long sys_lgetxattr /* 230 */
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.long sys_fgetxattr
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.long sys_listxattr
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.long sys_llistxattr
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.long sys_flistxattr
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.long sys_removexattr /* 235 */
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.long sys_lremovexattr
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.long sys_fremovexattr
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.long sys_tkill
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.long sys_sendfile64
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.long sys_futex /* 240 */
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.long sys_sched_setaffinity
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.long sys_sched_getaffinity
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.long sys_set_thread_area
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.long sys_get_thread_area
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.long sys_io_setup /* 245 */
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.long sys_io_destroy
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.long sys_io_getevents
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.long sys_io_submit
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.long sys_io_cancel
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.long sys_fadvise64 /* 250 */
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[PATCH] remove sys_set_zone_reclaim()
This removes sys_set_zone_reclaim() for now. While i'm sure Martin is
trying to solve a real problem, we must not hard-code an incomplete and
insufficient approach into a syscall, because syscalls are pretty much
for eternity. I am quite strongly convinced that this syscall must not
hit v2.6.13 in its current form.
Firstly, the syscall lacks basic syscall design: e.g. it allows the
global setting of VM policy for unprivileged users. (!) [ Imagine an
Oracle installation and a SAP installation on the same NUMA box fighting
over the 'optimal' setting for this flag. What will they do? Will they
try to set the flag to their own preferred value every second or so? ]
Secondly, it was added based on a single datapoint from Martin:
http://marc.theaimsgroup.com/?l=linux-mm&m=111763597218177&w=2
where Martin characterizes the numbers the following way:
' Run-to-run variability for "make -j" is huge, so these numbers aren't
terribly useful except to see that with reclaim the benchmark still
finishes in a reasonable amount of time. '
in other words: the fundamental problem has likely not been solved, only
a tendential move into the right direction has been observed, and a
handful of numbers were picked out of a set of hugely variable results,
without showing the variability data. How much variance is there
run-to-run?
I'd really suggest to first walk the walk and see what's needed to get
stable & predictable kernel compilation numbers on that NUMA box, before
adding random syscalls to tune a particular aspect of the VM ... which
approach might not even matter once the whole picture has been analyzed
and understood!
The third, most important point is that the syscall exposes VM tuning
internals in a completely unstructured way. What sense does it make to
have a _GLOBAL_ per-node setting for 'should we go to another node for
reclaim'? If then it might make sense to do this per-app, via numalib or
so.
The change is minimalistic in that it doesnt remove the syscall and the
underlying infrastructure changes, only the user-visible changes. We
could perhaps add a CAP_SYS_ADMIN-only sysctl for this hack, a'ka
/proc/sys/vm/swappiness, but even that looks quite counterproductive
when the generic approach is that we are trying to reduce the number of
external factors in the VM balance picture.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-01 11:39:13 +00:00
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.long sys_ni_syscall
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2005-05-01 15:58:55 +00:00
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.long sys_exit_group
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.long sys_lookup_dcookie
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.long sys_epoll_create
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.long sys_epoll_ctl /* 255 */
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.long sys_epoll_wait
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.long sys_remap_file_pages
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.long sys_set_tid_address
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.long sys_timer_create
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.long sys_timer_settime /* 260 */
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.long sys_timer_gettime
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.long sys_timer_getoverrun
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.long sys_timer_delete
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.long sys_clock_settime
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.long sys_clock_gettime /* 265 */
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.long sys_clock_getres
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.long sys_clock_nanosleep
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.long sys_statfs64
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.long sys_fstatfs64
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.long sys_tgkill /* 270 */
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.long sys_utimes
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.long sys_fadvise64_64
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.long sys_ni_syscall /* sys_vserver */
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.long sys_mbind
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.long sys_get_mempolicy
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.long sys_set_mempolicy
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.long sys_mq_open
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.long sys_mq_unlink
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.long sys_mq_timedsend
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.long sys_mq_timedreceive /* 280 */
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.long sys_mq_notify
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.long sys_mq_getsetattr
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2005-06-25 21:57:56 +00:00
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.long sys_kexec_load
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2005-05-01 15:58:55 +00:00
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.long sys_waitid
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.long sys_ni_syscall /* 285 */ /* available */
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.long sys_add_key
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.long sys_request_key
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.long sys_keyctl
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2005-06-27 08:55:12 +00:00
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.long sys_ioprio_set
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.long sys_ioprio_get /* 290 */
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[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 21:06:03 +00:00
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|
|
.long sys_inotify_init
|
|
|
|
|
.long sys_inotify_add_watch
|
|
|
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|
.long sys_inotify_rm_watch
|
2006-01-08 09:00:51 +00:00
|
|
|
.long sys_migrate_pages
|
2006-01-19 01:43:55 +00:00
|
|
|
.long sys_openat /* 295 */
|
|
|
|
|
.long sys_mkdirat
|
|
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|
|
.long sys_mknodat
|
|
|
|
|
.long sys_fchownat
|
|
|
|
|
.long sys_futimesat
|
2006-02-12 01:55:47 +00:00
|
|
|
.long sys_fstatat64 /* 300 */
|
2006-01-19 01:43:55 +00:00
|
|
|
.long sys_unlinkat
|
|
|
|
|
.long sys_renameat
|
|
|
|
|
.long sys_linkat
|
|
|
|
|
.long sys_symlinkat
|
|
|
|
|
.long sys_readlinkat /* 305 */
|
|
|
|
|
.long sys_fchmodat
|
|
|
|
|
.long sys_faccessat
|
2006-01-19 01:44:06 +00:00
|
|
|
.long sys_pselect6
|
|
|
|
|
.long sys_ppoll
|
2006-02-07 20:59:03 +00:00
|
|
|
.long sys_unshare /* 310 */
|
2006-03-27 09:16:25 +00:00
|
|
|
.long sys_set_robust_list
|
|
|
|
|
.long sys_get_robust_list
|
2006-03-30 13:15:30 +00:00
|
|
|
.long sys_splice
|
2006-03-31 10:30:42 +00:00
|
|
|
.long sys_sync_file_range
|
2006-04-11 13:51:17 +00:00
|
|
|
.long sys_tee /* 315 */
|
2006-05-26 01:44:19 +00:00
|
|
|
.long sys_vmsplice
|
2006-06-23 09:03:56 +00:00
|
|
|
.long sys_move_pages
|
2006-09-26 08:52:28 +00:00
|
|
|
.long sys_getcpu
|
2006-10-11 08:21:44 +00:00
|
|
|
.long sys_epoll_pwait
|
utimensat implementation
Implement utimensat(2) which is an extension to futimesat(2) in that it
a) supports nano-second resolution for the timestamps
b) allows to selectively ignore the atime/mtime value
c) allows to selectively use the current time for either atime or mtime
d) supports changing the atime/mtime of a symlink itself along the lines
of the BSD lutimes(3) functions
For this change the internally used do_utimes() functions was changed to
accept a timespec time value and an additional flags parameter.
Additionally the sys_utime function was changed to match compat_sys_utime
which already use do_utimes instead of duplicating the work.
Also, the completely missing futimensat() functionality is added. We have
such a function in glibc but we have to resort to using /proc/self/fd/* which
not everybody likes (chroot etc).
Test application (the syscall number will need per-arch editing):
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <sys/time.h>
#include <stddef.h>
#include <syscall.h>
#define __NR_utimensat 280
#define UTIME_NOW ((1l << 30) - 1l)
#define UTIME_OMIT ((1l << 30) - 2l)
int
main(void)
{
int status = 0;
int fd = open("ttt", O_RDWR|O_CREAT|O_EXCL, 0666);
if (fd == -1)
error (1, errno, "failed to create test file \"ttt\"");
struct stat64 st1;
if (fstat64 (fd, &st1) != 0)
error (1, errno, "fstat failed");
struct timespec t[2];
t[0].tv_sec = 0;
t[0].tv_nsec = 0;
t[1].tv_sec = 0;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
struct stat64 st2;
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
{
puts ("atim not reset to zero");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim not reset to zero");
status = 1;
}
if (status != 0)
goto out;
t[0] = st1.st_atim;
t[1].tv_sec = 0;
t[1].tv_nsec = UTIME_OMIT;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
|| st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
{
puts ("atim not set");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim changed from zero");
status = 1;
}
if (status != 0)
goto out;
t[0].tv_sec = 0;
t[0].tv_nsec = UTIME_OMIT;
t[1] = st1.st_mtim;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
|| st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
{
puts ("mtim changed from original time");
status = 1;
}
if (st2.st_mtim.tv_sec != st1.st_mtim.tv_sec
|| st2.st_mtim.tv_nsec != st1.st_mtim.tv_nsec)
{
puts ("mtim not set");
status = 1;
}
if (status != 0)
goto out;
sleep (2);
t[0].tv_sec = 0;
t[0].tv_nsec = UTIME_NOW;
t[1].tv_sec = 0;
t[1].tv_nsec = UTIME_NOW;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
struct timeval tv;
gettimeofday(&tv,NULL);
if (st2.st_atim.tv_sec <= st1.st_atim.tv_sec
|| st2.st_atim.tv_sec > tv.tv_sec)
{
puts ("atim not set to NOW");
status = 1;
}
if (st2.st_mtim.tv_sec <= st1.st_mtim.tv_sec
|| st2.st_mtim.tv_sec > tv.tv_sec)
{
puts ("mtim not set to NOW");
status = 1;
}
if (symlink ("ttt", "tttsym") != 0)
error (1, errno, "cannot create symlink");
t[0].tv_sec = 0;
t[0].tv_nsec = 0;
t[1].tv_sec = 0;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, AT_FDCWD, "tttsym", t, AT_SYMLINK_NOFOLLOW) != 0)
error (1, errno, "utimensat failed");
if (lstat64 ("tttsym", &st2) != 0)
error (1, errno, "lstat failed");
if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
{
puts ("symlink atim not reset to zero");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("symlink mtim not reset to zero");
status = 1;
}
if (status != 0)
goto out;
t[0].tv_sec = 1;
t[0].tv_nsec = 0;
t[1].tv_sec = 1;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, fd, NULL, t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != 1 || st2.st_atim.tv_nsec != 0)
{
puts ("atim not reset to one");
status = 1;
}
if (st2.st_mtim.tv_sec != 1 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim not reset to one");
status = 1;
}
if (status == 0)
puts ("all OK");
out:
close (fd);
unlink ("ttt");
unlink ("tttsym");
return status;
}
[akpm@linux-foundation.org: add missing i386 syscall table entry]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Cc: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 07:33:25 +00:00
|
|
|
.long sys_utimensat /* 320 */
|
2007-05-11 05:23:14 +00:00
|
|
|
.long sys_signalfd
|
2007-05-11 05:23:17 +00:00
|
|
|
.long sys_timerfd
|
2007-05-11 05:23:20 +00:00
|
|
|
.long sys_eventfd
|
sys_fallocate() implementation on i386, x86_64 and powerpc
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature will need
to support an inode operation called ->fallocate().
Applications can use this feature to avoid fragmentation to certain
level and thus get faster access speed. With preallocation, applications
also get a guarantee of space for particular file(s) - even if later the
the system becomes full.
Currently, glibc provides an interface called posix_fallocate() which
can be used for similar cause. Though this has the advantage of working
on all file systems, but it is quite slow (since it writes zeroes to
each block that has to be preallocated). Without a doubt, file systems
can do this more efficiently within the kernel, by implementing
the proposed fallocate() system call. It is expected that
posix_fallocate() will be modified to call this new system call first
and incase the kernel/filesystem does not implement it, it should fall
back to the current implementation of writing zeroes to the new blocks.
ToDos:
1. Implementation on other architectures (other than i386, x86_64,
and ppc). Patches for s390(x) and ia64 are already available from
previous posts, but it was decided that they should be added later
once fallocate is in the mainline. Hence not including those patches
in this take.
2. Changes to glibc,
a) to support fallocate() system call
b) to make posix_fallocate() and posix_fallocate64() call fallocate()
Signed-off-by: Amit Arora <aarora@in.ibm.com>
2007-07-18 01:42:44 +00:00
|
|
|
.long sys_fallocate
|
