Lines Matching +full:rst +full:- +full:ctrl
5 .. See scripts/check-sysctl-docs to keep this up to date
13 Documentation/admin-guide/sysctl/index.rst.
15 ------------------------------------------------------------------------------
39 If BSD-style process accounting is enabled these values control
58 See Documentation/power/video.rst. This allows the video resume mode to be set,
71 The machine hardware name, the same output as ``uname -m``
98 Documentation/arch/x86/boot.rst for additional information.
108 Documentation/arch/x86/boot.rst for additional information.
129 Ctrl-Alt-Delete). Writing a value to this file which doesn't
130 correspond to a running process will result in ``-ESRCH``.
132 See also `ctrl-alt-del`_.
237 ctrl-alt-del
240 When the value in this file is 0, ctrl-alt-del is trapped and
248 mode, the ctrl-alt-del is intercepted by the program before it
293 See Documentation/driver-api/firmware/fallback-mechanisms.rst.
339 See Documentation/trace/ftrace.rst.
347 debug information. If enabled, arch-specific all-CPU stack dumping
367 See Documentation/admin-guide/lockup-watchdogs.rst for more information.
379 modern systems rely exclusively on the netlink-based uevent source and
393 1: Will non-maskably interrupt all CPUs and dump their backtraces when
459 -1: report an infinite number of warnings.
465 Controls whether the panic kmsg data should be reported to Hyper-V.
473 ignore-unaligned-usertrap
487 See also `unaligned-trap`_.
499 -EPERM) for unprivileged processes not in the io_uring_group group.
503 always fails with -EPERM. Existing io_uring instances can still be
513 to create an io_uring instance. If io_uring_group is set to -1 (the
541 -1 Unlimited calls to kexec. This is the default setting.
570 The correct long-term solution is to do the permission checks at
646 By default they are equal to -1, which means generic allocation logic.
652 2) Toggle with non-default value will be set back to -1 by kernel after
654 fails, it is undefined if the value remains unmodified or is reset to -1.
678 that are programmed to generate Non-Maskable Interrupts (NMIs) periodically
687 Documentation/admin-guide/kernel-parameters.rst).
738 promotion throughput. The per-node max promotion throughput in MB/s
756 1: Will non-maskably interrupt all CPUs and dump their backtraces when
786 The only way to tune these values is to rebuild the kernel :-)
792 if your architecture did not always support 32-bit UIDs (i.e. arm,
794 applications that use the old 16-bit UID/GID system calls, if the
838 1 Panic immediately. If the `panic` sysctl is also non-zero then the
958 1-100 Attempt to throttle perf's sample rate to this
981 -1 Allow use of (almost) all events by all users.
1002 '``perf record -g``' or '``perf trace --call-graph fp``'.
1005 enabled, otherwise writing to this file will return ``-EBUSY``.
1013 Control size of per-cpu ring buffer not counted against mlock limit.
1023 instance, when using '``perf record -g``' or '``perf trace --call-graph fp``'.
1026 enabled, otherwise writing to this file will return ``-EBUSY``.
1042 See Documentation/arch/arm64/perf.rst for more information.
1073 powersave-nap (PPC only)
1076 If set, Linux-PPC will use the 'nap' mode of powersaving,
1109 Value from 0 - 10000 is allowed.
1146 a one-time setting until next reboot: once set, it cannot be changed by
1155 See Documentation/filesystems/devpts.rst.
1198 loaded to random addresses. Also for PIE-linked binaries, the
1209 non-legacy applications that would be broken this way, so for most
1218 real-root-dev
1221 See Documentation/admin-guide/initrd.rst.
1224 reboot-cmd (SPARC only)
1240 this value to 0. On Non-EAS platforms, write operation fails and
1247 Documentation/accounting/delay-accounting.rst. Enabling this feature incurs
1316 See Documentation/userspace-api/seccomp_filter.rst.
1319 sg-big-buff
1394 -1 Legacy per-write sysctl value handling, with no printk warnings.
1460 On x86, each "split lock" imposes a system-wide performance penalty. On larger
1462 denials of service to well-behaved and potentially more important users.
1473 0 Disable the mitigation mode - just warns the split lock on kernel log
1475 1 Enable the mitigation mode (this is the default) - penalizes the split
1498 stop-a (SPARC only)
1501 Controls Stop-A:
1504 0 Stop-A has no effect.
1505 1 Stop-A breaks to the PROM (default).
1508 Stop-A is always enabled on a panic, so that the user can return to
1515 See Documentation/admin-guide/sysrq.rst.
1521 Non-zero if the kernel has been tainted. Numeric values, which can be
1537 4096 `(O)` externally-built ("out-of-tree") module was loaded
1545 See Documentation/admin-guide/tainted-kernels.rst for more information.
1552 See Documentation/admin-guide/kernel-parameters.rst for more details on
1556 threads-max
1566 The minimum value that can be written to ``threads-max`` is 1.
1568 The maximum value that can be written to ``threads-max`` is given by the
1571 If a value outside of this range is written to ``threads-max`` an
1577 When set to a non-zero value, attempt to migrate timers away from idle cpus to
1585 When set, disables tracing (see Documentation/trace/ftrace.rst) when a
1605 See Documentation/admin-guide/kernel-parameters.rst and
1606 Documentation/trace/boottime-trace.rst.
1609 unaligned-trap
1622 See also `ignore-unaligned-usertrap`_.
1629 value is non-zero, unknown NMI is trapped and then panic occurs. At
1641 will return ``-EPERM``. Once set to 1, this can't be cleared from the
1700 to re-enable cores that by default were not running the watchdog,
1707 echo 0,2-4 > /proc/sys/kernel/watchdog_cpumask