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 dd00fd556a60..b79bcdf16319 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 | |||
164 | acpi_skip_timer_override [HW,ACPI] | 164 | acpi_skip_timer_override [HW,ACPI] |
165 | Recognize and ignore IRQ0/pin2 Interrupt Override. | 165 | Recognize and ignore IRQ0/pin2 Interrupt Override. |
166 | For broken nForce2 BIOS resulting in XT-PIC timer. | 166 | For broken nForce2 BIOS resulting in XT-PIC timer. |
167 | acpi_use_timer_override [HW,ACPI} | ||
168 | Use timer override. For some broken Nvidia NF5 boards | ||
169 | that require a timer override, but don't have | ||
170 | HPET | ||
167 | 171 | ||
168 | acpi_dbg_layer= [HW,ACPI] | 172 | acpi_dbg_layer= [HW,ACPI] |
169 | Format: <int> | 173 | Format: <int> |
@@ -553,9 +557,6 @@ and is between 256 and 4096 characters. It is defined in the file | |||
553 | floppy= [HW] | 557 | floppy= [HW] |
554 | See Documentation/floppy.txt. | 558 | See Documentation/floppy.txt. |
555 | 559 | ||
556 | ftape= [HW] Floppy Tape subsystem debugging options. | ||
557 | See Documentation/ftape.txt. | ||
558 | |||
559 | gamecon.map[2|3]= | 560 | gamecon.map[2|3]= |
560 | [HW,JOY] Multisystem joystick and NES/SNES/PSX pad | 561 | [HW,JOY] Multisystem joystick and NES/SNES/PSX pad |
561 | support via parallel port (up to 5 devices per port) | 562 | 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 | |||
598 | 599 | ||
599 | hugepages= [HW,IA-32,IA-64] Maximal number of HugeTLB pages. | 600 | hugepages= [HW,IA-32,IA-64] Maximal number of HugeTLB pages. |
600 | 601 | ||
601 | noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing | ||
602 | |||
603 | i8042.direct [HW] Put keyboard port into non-translated mode | 602 | i8042.direct [HW] Put keyboard port into non-translated mode |
604 | i8042.dumbkbd [HW] Pretend that controller can only read data from | 603 | i8042.dumbkbd [HW] Pretend that controller can only read data from |
605 | keyboard and cannot control its state | 604 | keyboard and cannot control its state |
@@ -649,6 +648,10 @@ and is between 256 and 4096 characters. It is defined in the file | |||
649 | idle= [HW] | 648 | idle= [HW] |
650 | Format: idle=poll or idle=halt | 649 | Format: idle=poll or idle=halt |
651 | 650 | ||
651 | ignore_loglevel [KNL] | ||
652 | Ignore loglevel setting - this will print /all/ | ||
653 | kernel messages to the console. Useful for debugging. | ||
654 | |||
652 | ihash_entries= [KNL] | 655 | ihash_entries= [KNL] |
653 | Set number of hash buckets for inode cache. | 656 | Set number of hash buckets for inode cache. |
654 | 657 | ||
@@ -713,7 +716,12 @@ and is between 256 and 4096 characters. It is defined in the file | |||
713 | Format: <RDP>,<reset>,<pci_scan>,<verbosity> | 716 | Format: <RDP>,<reset>,<pci_scan>,<verbosity> |
714 | 717 | ||
715 | isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler. | 718 | isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler. |
716 | Format: <cpu number>,...,<cpu number> | 719 | Format: |
720 | <cpu number>,...,<cpu number> | ||
721 | or | ||
722 | <cpu number>-<cpu number> (must be a positive range in ascending order) | ||
723 | or a mixture | ||
724 | <cpu number>,...,<cpu number>-<cpu number> | ||
717 | This option can be used to specify one or more CPUs | 725 | This option can be used to specify one or more CPUs |
718 | to isolate from the general SMP balancing and scheduling | 726 | to isolate from the general SMP balancing and scheduling |
719 | algorithms. The only way to move a process onto or off | 727 | 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 | |||
1011 | emulation library even if a 387 maths coprocessor | 1019 | emulation library even if a 387 maths coprocessor |
1012 | is present. | 1020 | is present. |
1013 | 1021 | ||
1022 | noaliencache [MM, NUMA] Disables the allcoation of alien caches in | ||
1023 | the slab allocator. Saves per-node memory, but will | ||
1024 | impact performance on real NUMA hardware. | ||
1025 | |||
1014 | noalign [KNL,ARM] | 1026 | noalign [KNL,ARM] |
1015 | 1027 | ||
1016 | noapic [SMP,APIC] Tells the kernel to not make use of any | 1028 | 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 | |||
1051 | in certain environments such as networked servers or | 1063 | in certain environments such as networked servers or |
1052 | real-time systems. | 1064 | real-time systems. |
1053 | 1065 | ||
1066 | noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing | ||
1067 | |||
1054 | noirqdebug [IA-32] Disables the code which attempts to detect and | 1068 | noirqdebug [IA-32] Disables the code which attempts to detect and |
1055 | disable unhandled interrupt sources. | 1069 | disable unhandled interrupt sources. |
1056 | 1070 | ||
1071 | no_timer_check [IA-32,X86_64,APIC] Disables the code which tests for | ||
1072 | broken timer IRQ sources. | ||
1073 | |||
1057 | noisapnp [ISAPNP] Disables ISA PnP code. | 1074 | noisapnp [ISAPNP] Disables ISA PnP code. |
1058 | 1075 | ||
1059 | noinitrd [RAM] Tells the kernel not to load any configured | 1076 | 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 | |||
1284 | Param: "schedule" - profile schedule points. | 1301 | Param: "schedule" - profile schedule points. |
1285 | Param: <number> - step/bucket size as a power of 2 for | 1302 | Param: <number> - step/bucket size as a power of 2 for |
1286 | statistical time based profiling. | 1303 | statistical time based profiling. |
1304 | Param: "sleep" - profile D-state sleeping (millisecs) | ||
1287 | 1305 | ||
1288 | processor.max_cstate= [HW,ACPI] | 1306 | processor.max_cstate= [HW,ACPI] |
1289 | Limit processor to maximum C-state | 1307 | Limit processor to maximum C-state |
@@ -1365,6 +1383,12 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1365 | resume= [SWSUSP] | 1383 | resume= [SWSUSP] |
1366 | Specify the partition device for software suspend | 1384 | Specify the partition device for software suspend |
1367 | 1385 | ||
1386 | resume_offset= [SWSUSP] | ||
1387 | Specify the offset from the beginning of the partition | ||
1388 | given by "resume=" at which the swap header is located, | ||
1389 | in <PAGE_SIZE> units (needed only for swap files). | ||
1390 | See Documentation/power/swsusp-and-swap-files.txt | ||
1391 | |||
1368 | rhash_entries= [KNL,NET] | 1392 | rhash_entries= [KNL,NET] |
1369 | Set number of hash buckets for route cache | 1393 | Set number of hash buckets for route cache |
1370 | 1394 | ||
@@ -1415,6 +1439,11 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1415 | 1439 | ||
1416 | scsi_logging= [SCSI] | 1440 | scsi_logging= [SCSI] |
1417 | 1441 | ||
1442 | scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are | ||
1443 | discovered. async scans them in kernel threads, | ||
1444 | allowing boot to proceed. none ignores them, expecting | ||
1445 | user space to do the scan. | ||
1446 | |||
1418 | selinux [SELINUX] Disable or enable SELinux at boot time. | 1447 | selinux [SELINUX] Disable or enable SELinux at boot time. |
1419 | Format: { "0" | "1" } | 1448 | Format: { "0" | "1" } |
1420 | See security/selinux/Kconfig help text. | 1449 | See security/selinux/Kconfig help text. |
@@ -1726,6 +1755,9 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1726 | norandmaps Don't use address space randomization | 1755 | norandmaps Don't use address space randomization |
1727 | Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space | 1756 | Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space |
1728 | 1757 | ||
1758 | unwind_debug=N N > 0 will enable dwarf2 unwinder debugging | ||
1759 | This is useful to get more information why | ||
1760 | you got a "dwarf2 unwinder stuck" | ||
1729 | 1761 | ||
1730 | ______________________________________________________________________ | 1762 | ______________________________________________________________________ |
1731 | 1763 | ||