1 # For a description of the syntax of this configuration file,
2 # see Documentation/kbuild/kconfig-language.txt.
5 mainmenu "Linux/PowerPC Kernel Configuration"
11 This option selects whether a 32-bit or a 64-bit kernel
29 config GENERIC_HARDIRQS
37 config RWSEM_GENERIC_SPINLOCK
40 config RWSEM_XCHGADD_ALGORITHM
44 config GENERIC_HWEIGHT
48 config GENERIC_CALIBRATE_DELAY
52 config GENERIC_FIND_NEXT_BIT
70 depends on COMPAT && SYSVIPC
73 # All PPC32s use generic nvram driver through ppc_md
78 config SCHED_NO_NO_OMIT_FRAME_POINTER
82 config ARCH_MAY_HAVE_PC_FDC
95 default y if PPC32 && SMP
102 config DEFAULT_UIMAGE
105 Used to allow a board to specify it wants a uImage built by default
108 menu "Processor support"
110 prompt "Processor Type"
119 There are four families of PowerPC chips supported. The more common
120 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
121 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
122 embedded versions (403 and 405) and the high end 64 bit Power
123 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
125 Unless you are building a kernel for one of the embedded processor
126 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
127 Note that the kernel runs in 32-bit mode even on 64-bit chips.
130 bool "Freescale 52xx"
135 bool "Freescale 82xx"
140 bool "Freescale 83xx"
147 bool "Freescale 85xx"
153 bool "Freescale 86xx"
159 The Freescale E600 SoCs have 74xx cores.
163 select PPC_DCR_NATIVE
167 select PPC_DCR_NATIVE
173 bool "Freescale e200"
178 bool "Optimize for POWER4"
182 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
183 The resulting binary will not work on POWER3 or RS64 processors
184 when compiled with binutils 2.15 or later.
189 default y if !POWER4_ONLY
198 # this is temp to handle compat with arch=ppc
202 # this is temp to handle compat with arch=ppc
213 config PPC_DCR_NATIVE
223 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
226 config PPC_OF_PLATFORM_PCI
228 depends on PPC64 # not supported on 32 bits yet
233 depends on E200 || E500
238 depends on E200 || E500
243 depends on 44x || E500
245 default y if E500 && PHYS_64BIT
248 bool 'Large physical address support' if E500
249 depends on 44x || E500
252 This option enables kernel support for larger than 32-bit physical
253 addresses. This features is not be available on all e500 cores.
255 If in doubt, say N here.
258 bool "AltiVec Support"
259 depends on CLASSIC32 || POWER4
261 This option enables kernel support for the Altivec extensions to the
262 PowerPC processor. The kernel currently supports saving and restoring
263 altivec registers, and turning on the 'altivec enable' bit so user
264 processes can execute altivec instructions.
266 This option is only usefully if you have a processor that supports
267 altivec (G4, otherwise known as 74xx series), but does not have
268 any affect on a non-altivec cpu (it does, however add code to the
271 If in doubt, say Y here.
275 depends on E200 || E500
278 This option enables kernel support for the Signal Processing
279 Extensions (SPE) to the PowerPC processor. The kernel currently
280 supports saving and restoring SPE registers, and turning on the
281 'spe enable' bit so user processes can execute SPE instructions.
283 This option is only useful if you have a processor that supports
284 SPE (e500, otherwise known as 85xx series), but does not have any
285 effect on a non-spe cpu (it does, however add code to the kernel).
287 If in doubt, say Y here.
291 depends on 6xx || POWER3 || POWER4 || PPC64
294 config PPC_STD_MMU_32
296 depends on PPC_STD_MMU && PPC32
298 config VIRT_CPU_ACCOUNTING
299 bool "Deterministic task and CPU time accounting"
303 Select this option to enable more accurate task and CPU time
304 accounting. This is done by reading a CPU counter on each
305 kernel entry and exit and on transitions within the kernel
306 between system, softirq and hardirq state, so there is a
307 small performance impact. This also enables accounting of
308 stolen time on logically-partitioned systems running on
309 IBM POWER5-based machines.
311 If in doubt, say Y here.
314 depends on PPC_STD_MMU
315 bool "Symmetric multi-processing support"
317 This enables support for systems with more than one CPU. If you have
318 a system with only one CPU, say N. If you have a system with more
319 than one CPU, say Y. Note that the kernel does not currently
320 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
321 since they have inadequate hardware support for multiprocessor
324 If you say N here, the kernel will run on single and multiprocessor
325 machines, but will use only one CPU of a multiprocessor machine. If
326 you say Y here, the kernel will run on single-processor machines.
327 On a single-processor machine, the kernel will run faster if you say
330 If you don't know what to do here, say N.
333 int "Maximum number of CPUs (2-128)"
336 default "32" if PPC64
339 config NOT_COHERENT_CACHE
341 depends on 4xx || 8xx || E200
345 source "init/Kconfig"
347 menu "Platform support"
348 depends on PPC64 || CLASSIC32
351 prompt "Machine type"
352 default PPC_MULTIPLATFORM
354 config PPC_MULTIPLATFORM
355 bool "Generic desktop/server/laptop"
357 Select this option if configuring for an IBM pSeries or
358 RS/6000 machine, an Apple machine, or a PReP, CHRP,
359 Maple or Cell-based machine.
362 bool "Embedded 6xx/7xx/7xxx-based board"
363 depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
367 depends on PPC32 && BROKEN
369 Select APUS if configuring for a PowerUP Amiga.
370 More information is available at:
371 <http://linux-apus.sourceforge.net/>.
376 depends on PPC_MPC836x || PPC_MPC832x
379 The QUICC Engine (QE) is a new generation of communications
380 coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
381 Selecting this option means that you wish to build a kernel
382 for a machine with a QE coprocessor.
385 depends on PPC_MULTIPLATFORM && PPC64
386 bool "IBM pSeries & new (POWER5-based) iSeries"
390 select RTAS_ERROR_LOGGING
391 select PPC_UDBG_16550
395 bool "IBM Legacy iSeries"
396 depends on PPC_MULTIPLATFORM && PPC64
399 bool "Common Hardware Reference Platform (CHRP) based machines"
400 depends on PPC_MULTIPLATFORM && PPC32
403 select PPC_INDIRECT_PCI
406 select PPC_UDBG_16550
410 bool "bPlan Efika 5k2. MPC5200B based computer"
411 depends on PPC_MULTIPLATFORM && PPC32
418 bool "Apple PowerMac based machines"
419 depends on PPC_MULTIPLATFORM
421 select PPC_INDIRECT_PCI if PPC32
422 select PPC_MPC106 if PPC32
427 depends on PPC_PMAC && POWER4
430 select MPIC_BROKEN_U3
431 select GENERIC_TBSYNC
436 bool "PowerPC Reference Platform (PReP) based machines"
437 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
440 select PPC_INDIRECT_PCI
441 select PPC_UDBG_16550
445 depends on PPC_MULTIPLATFORM && PPC64
446 bool "Maple 970FX Evaluation Board"
449 select MPIC_BROKEN_U3
450 select GENERIC_TBSYNC
451 select PPC_UDBG_16550
455 This option enables support for the Maple 970FX Evaluation Board.
456 For more information, refer to <http://www.970eval.com>
459 depends on PPC_MULTIPLATFORM && PPC64
460 bool "PA Semi SoC-based platforms"
463 select PPC_UDBG_16550
464 select GENERIC_TBSYNC
466 This option enables support for PA Semi's PWRficient line
467 of SoC processors, including PA6T-1682M
473 config PPC_CELL_NATIVE
477 select PPC_OF_PLATFORM_PCI
481 config PPC_IBM_CELL_BLADE
482 bool "IBM Cell Blade"
483 depends on PPC_MULTIPLATFORM && PPC64
484 select PPC_CELL_NATIVE
487 select PPC_UDBG_16550
488 select UDBG_RTAS_CONSOLE
490 config UDBG_RTAS_CONSOLE
491 bool "RTAS based debug console"
496 depends on PPC_PSERIES
502 depends on PPC_MULTIPLATFORM && PPC64
509 config RTAS_ERROR_LOGGING
515 bool "Proc interface to RTAS"
520 tristate "Firmware flash interface"
521 depends on PPC64 && RTAS_PROC
527 config MPIC_BROKEN_U3
533 depends on PPC_PSERIES || PPC_ISERIES
538 depends on PPC_PSERIES
539 bool "Support for GX bus based adapters"
541 Bus device driver for GX bus based adapters.
551 source "drivers/cpufreq/Kconfig"
554 bool "Support for Apple PowerBooks"
555 depends on CPU_FREQ && ADB_PMU && PPC32
556 select CPU_FREQ_TABLE
558 This adds support for frequency switching on Apple PowerBooks,
559 this currently includes some models of iBook & Titanium
562 config CPU_FREQ_PMAC64
563 bool "Support for some Apple G5s"
564 depends on CPU_FREQ && PPC64
565 select CPU_FREQ_TABLE
567 This adds support for frequency switching on Apple iMac G5,
568 and some of the more recent desktop G5 machines as well.
570 config PPC601_SYNC_FIX
571 bool "Workarounds for PPC601 bugs"
572 depends on 6xx && (PPC_PREP || PPC_PMAC)
574 Some versions of the PPC601 (the first PowerPC chip) have bugs which
575 mean that extra synchronization instructions are required near
576 certain instructions, typically those that make major changes to the
577 CPU state. These extra instructions reduce performance slightly.
578 If you say N here, these extra instructions will not be included,
579 resulting in a kernel which will run faster but may not run at all
580 on some systems with the PPC601 chip.
582 If in doubt, say Y here.
585 bool "On-chip CPU temperature sensor support"
588 G3 and G4 processors have an on-chip temperature sensor called the
589 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
590 temperature within 2-4 degrees Celsius. This option shows the current
591 on-die temperature in /proc/cpuinfo if the cpu supports it.
593 Unfortunately, on some chip revisions, this sensor is very inaccurate
594 and in many cases, does not work at all, so don't assume the cpu
595 temp is actually what /proc/cpuinfo says it is.
598 bool "Interrupt driven TAU driver (DANGEROUS)"
601 The TAU supports an interrupt driven mode which causes an interrupt
602 whenever the temperature goes out of range. This is the fastest way
603 to get notified the temp has exceeded a range. With this option off,
604 a timer is used to re-check the temperature periodically.
606 However, on some cpus it appears that the TAU interrupt hardware
607 is buggy and can cause a situation which would lead unexplained hard
610 Unless you are extending the TAU driver, or enjoy kernel/hardware
611 debugging, leave this option off.
614 bool "Average high and low temp"
617 The TAU hardware can compare the temperature to an upper and lower
618 bound. The default behavior is to show both the upper and lower
619 bound in /proc/cpuinfo. If the range is large, the temperature is
620 either changing a lot, or the TAU hardware is broken (likely on some
621 G4's). If the range is small (around 4 degrees), the temperature is
622 relatively stable. If you say Y here, a single temperature value,
623 halfway between the upper and lower bounds, will be reported in
626 If in doubt, say N here.
630 source arch/powerpc/platforms/embedded6xx/Kconfig
631 source arch/powerpc/platforms/4xx/Kconfig
632 source arch/powerpc/platforms/82xx/Kconfig
633 source arch/powerpc/platforms/83xx/Kconfig
634 source arch/powerpc/platforms/85xx/Kconfig
635 source arch/powerpc/platforms/86xx/Kconfig
636 source arch/powerpc/platforms/8xx/Kconfig
637 source arch/powerpc/platforms/cell/Kconfig
639 menu "Kernel options"
642 bool "High memory support"
645 source kernel/Kconfig.hz
646 source kernel/Kconfig.preempt
647 source "fs/Kconfig.binfmt"
649 # We optimistically allocate largepages from the VM, so make the limit
650 # large enough (16MB). This badly named config option is actually
652 config FORCE_MAX_ZONEORDER
655 default "9" if PPC_64K_PAGES
658 config MATH_EMULATION
659 bool "Math emulation"
660 depends on 4xx || 8xx || E200 || E500
662 Some PowerPC chips designed for embedded applications do not have
663 a floating-point unit and therefore do not implement the
664 floating-point instructions in the PowerPC instruction set. If you
665 say Y here, the kernel will include code to emulate a floating-point
666 unit, which will allow programs that use floating-point
670 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
671 depends on EXPERIMENTAL && PPC64
674 Cause IO segments sent to a device for DMA to be merged virtually
675 by the IOMMU when they happen to have been allocated contiguously.
676 This doesn't add pressure to the IOMMU allocator. However, some
677 drivers don't support getting large merged segments coming back
678 from *_map_sg(). Say Y if you know the drivers you are using are
679 properly handling this case.
682 bool "Support for enabling/disabling CPUs"
683 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
685 Say Y here to be able to disable and re-enable individual
686 CPUs at runtime on SMP machines.
688 Say N if you are unsure.
690 config ARCH_ENABLE_MEMORY_HOTPLUG
694 bool "kexec system call (EXPERIMENTAL)"
695 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
697 kexec is a system call that implements the ability to shutdown your
698 current kernel, and to start another kernel. It is like a reboot
699 but it is independent of the system firmware. And like a reboot
700 you can start any kernel with it, not just Linux.
702 The name comes from the similarity to the exec system call.
704 It is an ongoing process to be certain the hardware in a machine
705 is properly shutdown, so do not be surprised if this code does not
706 initially work for you. It may help to enable device hotplugging
707 support. As of this writing the exact hardware interface is
708 strongly in flux, so no good recommendation can be made.
711 bool "Build a kdump crash kernel (EXPERIMENTAL)"
712 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
714 Build a kernel suitable for use as a kdump capture kernel.
715 The kernel will be linked at a different address than normal, and
716 so can only be used for Kdump.
718 Don't change this unless you know what you are doing.
722 depends on 8xx || 8260
726 bool "PC PS/2 style Keyboard"
727 depends on 4xx || CPM2
730 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
731 default y if PPC_PREP
734 bool "Distribute interrupts on all CPUs by default"
735 depends on SMP && !MV64360
737 This option gives the kernel permission to distribute IRQs across
738 multiple CPUs. Saying N here will route all IRQs to the first
739 CPU. Generally saying Y is safe, although some problems have been
740 reported with SMP Power Macintoshes with this option enabled.
742 source "arch/powerpc/platforms/pseries/Kconfig"
747 default y if SMP && PPC_PSERIES
752 depends on NEED_MULTIPLE_NODES
754 config ARCH_SELECT_MEMORY_MODEL
758 config ARCH_FLATMEM_ENABLE
760 depends on (PPC64 && !NUMA) || PPC32
762 config ARCH_SPARSEMEM_ENABLE
766 config ARCH_SPARSEMEM_DEFAULT
768 depends on (SMP && PPC_PSERIES) || PPC_CELL
770 config ARCH_POPULATES_NODE_MAP
775 config ARCH_MEMORY_PROBE
777 depends on MEMORY_HOTPLUG
779 # Some NUMA nodes have memory ranges that span
780 # other nodes. Even though a pfn is valid and
781 # between a node's start and end pfns, it may not
782 # reside on that node. See memmap_init_zone()
784 config NODES_SPAN_OTHER_NODES
786 depends on NEED_MULTIPLE_NODES
792 This option changes the kernel logical page size to 64k. On machines
793 without processor support for 64k pages, the kernel will simulate
794 them by loading each individual 4k page on demand transparently,
795 while on hardware with such support, it will be used to map
796 normal application pages.
799 bool "SMT (Hyperthreading) scheduler support"
800 depends on PPC64 && SMP
802 SMT scheduler support improves the CPU scheduler's decision making
803 when dealing with POWER5 cpus at a cost of slightly increased
804 overhead in some places. If unsure say N here.
806 config PROC_DEVICETREE
807 bool "Support for device tree in /proc"
810 This option adds a device-tree directory under /proc which contains
811 an image of the device tree that the kernel copies from Open
812 Firmware or other boot firmware. If unsure, say Y here.
814 source "arch/powerpc/platforms/prep/Kconfig"
817 bool "Default bootloader kernel arguments"
818 depends on !PPC_ISERIES
821 string "Initial kernel command string"
822 depends on CMDLINE_BOOL
823 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
825 On some platforms, there is currently no way for the boot loader to
826 pass arguments to the kernel. For these platforms, you can supply
827 some command-line options at build time by entering them here. In
828 most cases you will need to specify the root device here.
831 source kernel/power/Kconfig
835 bool "Enable seccomp to safely compute untrusted bytecode"
839 This kernel feature is useful for number crunching applications
840 that may need to compute untrusted bytecode during their
841 execution. By using pipes or other transports made available to
842 the process as file descriptors supporting the read/write
843 syscalls, it's possible to isolate those applications in
844 their own address space using seccomp. Once seccomp is
845 enabled via /proc/<pid>/seccomp, it cannot be disabled
846 and the task is only allowed to execute a few safe syscalls
847 defined by each seccomp mode.
849 If unsure, say Y. Only embedded should say N here.
860 bool "Support for ISA-bus hardware"
861 depends on PPC_PREP || PPC_CHRP
864 Find out whether you have ISA slots on your motherboard. ISA is the
865 name of a bus system, i.e. the way the CPU talks to the other stuff
866 inside your box. If you have an Apple machine, say N here; if you
867 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
868 you have an embedded board, consult your board documentation.
870 config GENERIC_ISA_DMA
872 depends on PPC64 || POWER4 || 6xx && !CPM2
887 config PPC_INDIRECT_PCI
890 default y if 40x || 44x
902 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
907 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
908 || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2
909 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
910 && !PPC_85xx && !PPC_86xx
911 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
912 default PCI_QSPAN if !4xx && !CPM2 && 8xx
914 Find out whether your system includes a PCI bus. PCI is the name of
915 a bus system, i.e. the way the CPU talks to the other stuff inside
916 your box. If you say Y here, the kernel will include drivers and
917 infrastructure code to support PCI bus devices.
925 depends on !4xx && !CPM2 && 8xx
928 Say Y here if you have a system based on a Motorola 8xx-series
929 embedded processor with a QSPAN PCI interface, otherwise say N.
933 depends on PCI && 8260
934 select PPC_INDIRECT_PCI
938 bool "Enable workaround for MPC826x erratum PCI 9"
939 depends on PCI_8260 && !ADS8272
943 prompt "IDMA channel for PCI 9 workaround"
946 config 8260_PCI9_IDMA1
949 config 8260_PCI9_IDMA2
952 config 8260_PCI9_IDMA3
955 config 8260_PCI9_IDMA4
960 source "drivers/pci/pcie/Kconfig"
962 source "drivers/pci/Kconfig"
964 source "drivers/pcmcia/Kconfig"
966 source "drivers/pci/hotplug/Kconfig"
970 menu "Advanced setup"
973 config ADVANCED_OPTIONS
974 bool "Prompt for advanced kernel configuration options"
976 This option will enable prompting for a variety of advanced kernel
977 configuration options. These options can cause the kernel to not
978 work if they are set incorrectly, but can be used to optimize certain
979 aspects of kernel memory management.
981 Unless you know what you are doing, say N here.
983 comment "Default settings for advanced configuration options are used"
984 depends on !ADVANCED_OPTIONS
986 config HIGHMEM_START_BOOL
987 bool "Set high memory pool address"
988 depends on ADVANCED_OPTIONS && HIGHMEM
990 This option allows you to set the base address of the kernel virtual
991 area used to map high memory pages. This can be useful in
992 optimizing the layout of kernel virtual memory.
994 Say N here unless you know what you are doing.
997 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
1000 config LOWMEM_SIZE_BOOL
1001 bool "Set maximum low memory"
1002 depends on ADVANCED_OPTIONS
1004 This option allows you to set the maximum amount of memory which
1005 will be used as "low memory", that is, memory which the kernel can
1006 access directly, without having to set up a kernel virtual mapping.
1007 This can be useful in optimizing the layout of kernel virtual
1010 Say N here unless you know what you are doing.
1013 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
1014 default "0x30000000"
1016 config KERNEL_START_BOOL
1017 bool "Set custom kernel base address"
1018 depends on ADVANCED_OPTIONS
1020 This option allows you to set the kernel virtual address at which
1021 the kernel will map low memory (the kernel image will be linked at
1022 this address). This can be useful in optimizing the virtual memory
1023 layout of the system.
1025 Say N here unless you know what you are doing.
1028 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1029 default "0xc0000000"
1031 config TASK_SIZE_BOOL
1032 bool "Set custom user task size"
1033 depends on ADVANCED_OPTIONS
1035 This option allows you to set the amount of virtual address space
1036 allocated to user tasks. This can be useful in optimizing the
1037 virtual memory layout of the system.
1039 Say N here unless you know what you are doing.
1042 hex "Size of user task space" if TASK_SIZE_BOOL
1043 default "0x80000000"
1045 config CONSISTENT_START_BOOL
1046 bool "Set custom consistent memory pool address"
1047 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1049 This option allows you to set the base virtual address
1050 of the consistent memory pool. This pool of virtual
1051 memory is used to make consistent memory allocations.
1053 config CONSISTENT_START
1054 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1055 default "0xff100000" if NOT_COHERENT_CACHE
1057 config CONSISTENT_SIZE_BOOL
1058 bool "Set custom consistent memory pool size"
1059 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1061 This option allows you to set the size of the
1062 consistent memory pool. This pool of virtual memory
1063 is used to make consistent memory allocations.
1065 config CONSISTENT_SIZE
1066 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1067 default "0x00200000" if NOT_COHERENT_CACHE
1069 config BOOT_LOAD_BOOL
1070 bool "Set the boot link/load address"
1071 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
1073 This option allows you to set the initial load address of the zImage
1074 or zImage.initrd file. This can be useful if you are on a board
1075 which has a small amount of memory.
1077 Say N here unless you know what you are doing.
1080 hex "Link/load address for booting" if BOOT_LOAD_BOOL
1081 default "0x00400000" if 40x || 8xx || 8260
1082 default "0x01000000" if 44x
1083 default "0x00800000"
1086 bool "Pinned Kernel TLBs (860 ONLY)"
1087 depends on ADVANCED_OPTIONS && 8xx
1093 default "0xc000000000000000"
1096 source "net/Kconfig"
1098 source "drivers/Kconfig"
1102 # XXX source "arch/ppc/8xx_io/Kconfig"
1104 # XXX source "arch/ppc/8260_io/Kconfig"
1106 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1108 source "arch/powerpc/platforms/iseries/Kconfig"
1110 source "lib/Kconfig"
1112 menu "Instrumentation Support"
1113 depends on EXPERIMENTAL
1115 source "arch/powerpc/oprofile/Kconfig"
1118 bool "Kprobes (EXPERIMENTAL)"
1119 depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
1121 Kprobes allows you to trap at almost any kernel address and
1122 execute a callback function. register_kprobe() establishes
1123 a probepoint and specifies the callback. Kprobes is useful
1124 for kernel debugging, non-intrusive instrumentation and testing.
1125 If in doubt, say "N".
1128 source "arch/powerpc/Kconfig.debug"
1130 source "security/Kconfig"
1134 depends on COMPAT && KEYS
1137 source "crypto/Kconfig"