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-rw-r--r--Documentation/kernel-parameters.txt27
1 files changed, 24 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 25dc4a0e7e48..15356aca938c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2681,9 +2681,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Run specified binary instead of /init from the ramdisk,
used for early userspace startup. See initrd.
- reboot= [BUGS=X86-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
- Format: <reboot_mode>[,<reboot_mode2>[,...]]
- See arch/*/kernel/reboot.c or arch/*/kernel/process.c
+ reboot= [KNL]
+ Format (x86 or x86_64):
+ [w[arm] | c[old] | h[ard] | s[oft] | g[pio]] \
+ [[,]s[mp]#### \
+ [[,]b[ios] | a[cpi] | k[bd] | t[riple] | e[fi] | p[ci]] \
+ [[,]f[orce]
+ Where reboot_mode is one of warm (soft) or cold (hard) or gpio,
+ reboot_type is one of bios, acpi, kbd, triple, efi, or pci,
+ reboot_force is either force or not specified,
+ reboot_cpu is s[mp]#### with #### being the processor
+ to be used for rebooting.
relax_domain_level=
[KNL, SMP] Set scheduler's default relax_domain_level.
@@ -3073,6 +3081,19 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
See also Documentation/trace/ftrace.txt "trace options"
section.
+ traceoff_on_warning
+ [FTRACE] enable this option to disable tracing when a
+ warning is hit. This turns off "tracing_on". Tracing can
+ be enabled again by echoing '1' into the "tracing_on"
+ file located in /sys/kernel/debug/tracing/
+
+ This option is useful, as it disables the trace before
+ the WARNING dump is called, which prevents the trace to
+ be filled with content caused by the warning output.
+
+ This option can also be set at run time via the sysctl
+ option: kernel/traceoff_on_warning
+
transparent_hugepage=
[KNL]
Format: [always|madvise|never]