diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index dd00fd556a6..b79bcdf1631 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -164,6 +164,10 @@ and is between 256 and 4096 characters. It is defined in the file acpi_skip_timer_override [HW,ACPI] Recognize and ignore IRQ0/pin2 Interrupt Override. For broken nForce2 BIOS resulting in XT-PIC timer. + acpi_use_timer_override [HW,ACPI} + Use timer override. For some broken Nvidia NF5 boards + that require a timer override, but don't have + HPET acpi_dbg_layer= [HW,ACPI] Format: <int> @@ -553,9 +557,6 @@ and is between 256 and 4096 characters. It is defined in the file floppy= [HW] See Documentation/floppy.txt. - ftape= [HW] Floppy Tape subsystem debugging options. - See Documentation/ftape.txt. - gamecon.map[2|3]= [HW,JOY] Multisystem joystick and NES/SNES/PSX pad support via parallel port (up to 5 devices per port) @@ -598,8 +599,6 @@ and is between 256 and 4096 characters. It is defined in the file hugepages= [HW,IA-32,IA-64] Maximal number of HugeTLB pages. - noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing - i8042.direct [HW] Put keyboard port into non-translated mode i8042.dumbkbd [HW] Pretend that controller can only read data from keyboard and cannot control its state @@ -649,6 +648,10 @@ and is between 256 and 4096 characters. It is defined in the file idle= [HW] Format: idle=poll or idle=halt + ignore_loglevel [KNL] + Ignore loglevel setting - this will print /all/ + kernel messages to the console. Useful for debugging. + ihash_entries= [KNL] Set number of hash buckets for inode cache. @@ -713,7 +716,12 @@ and is between 256 and 4096 characters. It is defined in the file Format: <RDP>,<reset>,<pci_scan>,<verbosity> isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler. - Format: <cpu number>,...,<cpu number> + Format: + <cpu number>,...,<cpu number> + or + <cpu number>-<cpu number> (must be a positive range in ascending order) + or a mixture + <cpu number>,...,<cpu number>-<cpu number> This option can be used to specify one or more CPUs to isolate from the general SMP balancing and scheduling algorithms. The only way to move a process onto or off @@ -1011,6 +1019,10 @@ and is between 256 and 4096 characters. It is defined in the file emulation library even if a 387 maths coprocessor is present. + noaliencache [MM, NUMA] Disables the allcoation of alien caches in + the slab allocator. Saves per-node memory, but will + impact performance on real NUMA hardware. + noalign [KNL,ARM] noapic [SMP,APIC] Tells the kernel to not make use of any @@ -1051,9 +1063,14 @@ and is between 256 and 4096 characters. It is defined in the file in certain environments such as networked servers or real-time systems. + noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing + noirqdebug [IA-32] Disables the code which attempts to detect and disable unhandled interrupt sources. + no_timer_check [IA-32,X86_64,APIC] Disables the code which tests for + broken timer IRQ sources. + noisapnp [ISAPNP] Disables ISA PnP code. noinitrd [RAM] Tells the kernel not to load any configured @@ -1284,6 +1301,7 @@ and is between 256 and 4096 characters. It is defined in the file Param: "schedule" - profile schedule points. Param: <number> - step/bucket size as a power of 2 for statistical time based profiling. + Param: "sleep" - profile D-state sleeping (millisecs) processor.max_cstate= [HW,ACPI] Limit processor to maximum C-state @@ -1365,6 +1383,12 @@ and is between 256 and 4096 characters. It is defined in the file resume= [SWSUSP] Specify the partition device for software suspend + resume_offset= [SWSUSP] + Specify the offset from the beginning of the partition + given by "resume=" at which the swap header is located, + in <PAGE_SIZE> units (needed only for swap files). + See Documentation/power/swsusp-and-swap-files.txt + rhash_entries= [KNL,NET] Set number of hash buckets for route cache @@ -1415,6 +1439,11 @@ and is between 256 and 4096 characters. It is defined in the file scsi_logging= [SCSI] + scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are + discovered. async scans them in kernel threads, + allowing boot to proceed. none ignores them, expecting + user space to do the scan. + selinux [SELINUX] Disable or enable SELinux at boot time. Format: { "0" | "1" } See security/selinux/Kconfig help text. @@ -1726,6 +1755,9 @@ and is between 256 and 4096 characters. It is defined in the file norandmaps Don't use address space randomization Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space + unwind_debug=N N > 0 will enable dwarf2 unwinder debugging + This is useful to get more information why + you got a "dwarf2 unwinder stuck" ______________________________________________________________________ |