Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/arch/s390/Kconfig

  1 config MMU
  2         def_bool y
  3 
  4 config ZONE_DMA
  5         def_bool y
  6 
  7 config LOCKDEP_SUPPORT
  8         def_bool y
  9 
 10 config STACKTRACE_SUPPORT
 11         def_bool y
 12 
 13 config HAVE_LATENCYTOP_SUPPORT
 14         def_bool y
 15 
 16 config RWSEM_GENERIC_SPINLOCK
 17         bool
 18 
 19 config RWSEM_XCHGADD_ALGORITHM
 20         def_bool y
 21 
 22 config ARCH_HAS_ILOG2_U32
 23         def_bool n
 24 
 25 config ARCH_HAS_ILOG2_U64
 26         def_bool n
 27 
 28 config GENERIC_HWEIGHT
 29         def_bool y
 30 
 31 config GENERIC_BUG
 32         def_bool y if BUG
 33 
 34 config GENERIC_BUG_RELATIVE_POINTERS
 35         def_bool y
 36 
 37 config ARCH_DMA_ADDR_T_64BIT
 38         def_bool 64BIT
 39 
 40 config GENERIC_LOCKBREAK
 41         def_bool y if SMP && PREEMPT
 42 
 43 config PGSTE
 44         def_bool y if KVM
 45 
 46 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 47         def_bool y
 48 
 49 config KEXEC
 50         def_bool y
 51 
 52 config AUDIT_ARCH
 53         def_bool y
 54 
 55 config NO_IOPORT_MAP
 56         def_bool y
 57 
 58 config PCI_QUIRKS
 59         def_bool n
 60 
 61 config S390
 62         def_bool y
 63         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 64         select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 65         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 66         select ARCH_INLINE_READ_LOCK
 67         select ARCH_INLINE_READ_LOCK_BH
 68         select ARCH_INLINE_READ_LOCK_IRQ
 69         select ARCH_INLINE_READ_LOCK_IRQSAVE
 70         select ARCH_INLINE_READ_TRYLOCK
 71         select ARCH_INLINE_READ_UNLOCK
 72         select ARCH_INLINE_READ_UNLOCK_BH
 73         select ARCH_INLINE_READ_UNLOCK_IRQ
 74         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
 75         select ARCH_INLINE_SPIN_LOCK
 76         select ARCH_INLINE_SPIN_LOCK_BH
 77         select ARCH_INLINE_SPIN_LOCK_IRQ
 78         select ARCH_INLINE_SPIN_LOCK_IRQSAVE
 79         select ARCH_INLINE_SPIN_TRYLOCK
 80         select ARCH_INLINE_SPIN_TRYLOCK_BH
 81         select ARCH_INLINE_SPIN_UNLOCK
 82         select ARCH_INLINE_SPIN_UNLOCK_BH
 83         select ARCH_INLINE_SPIN_UNLOCK_IRQ
 84         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
 85         select ARCH_INLINE_WRITE_LOCK
 86         select ARCH_INLINE_WRITE_LOCK_BH
 87         select ARCH_INLINE_WRITE_LOCK_IRQ
 88         select ARCH_INLINE_WRITE_LOCK_IRQSAVE
 89         select ARCH_INLINE_WRITE_TRYLOCK
 90         select ARCH_INLINE_WRITE_UNLOCK
 91         select ARCH_INLINE_WRITE_UNLOCK_BH
 92         select ARCH_INLINE_WRITE_UNLOCK_IRQ
 93         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
 94         select ARCH_SAVE_PAGE_KEYS if HIBERNATION
 95         select ARCH_USE_CMPXCHG_LOCKREF
 96         select ARCH_WANT_IPC_PARSE_VERSION
 97         select BUILDTIME_EXTABLE_SORT
 98         select CLONE_BACKWARDS2
 99         select GENERIC_CLOCKEVENTS
100         select GENERIC_CPU_DEVICES if !SMP
101         select GENERIC_FIND_FIRST_BIT
102         select GENERIC_SMP_IDLE_THREAD
103         select GENERIC_TIME_VSYSCALL
104         select HAVE_ALIGNED_STRUCT_PAGE if SLUB
105         select HAVE_ARCH_AUDITSYSCALL
106         select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
107         select HAVE_ARCH_SECCOMP_FILTER
108         select HAVE_ARCH_TRACEHOOK
109         select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
110         select HAVE_BPF_JIT if 64BIT && PACK_STACK
111         select HAVE_CMPXCHG_DOUBLE
112         select HAVE_CMPXCHG_LOCAL
113         select HAVE_C_RECORDMCOUNT
114         select HAVE_DEBUG_KMEMLEAK
115         select HAVE_DYNAMIC_FTRACE
116         select HAVE_FTRACE_MCOUNT_RECORD
117         select HAVE_FUNCTION_GRAPH_TRACER
118         select HAVE_FUNCTION_TRACER
119         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
120         select HAVE_FUTEX_CMPXCHG if FUTEX
121         select HAVE_KERNEL_BZIP2
122         select HAVE_KERNEL_GZIP
123         select HAVE_KERNEL_LZ4
124         select HAVE_KERNEL_LZMA
125         select HAVE_KERNEL_LZO
126         select HAVE_KERNEL_XZ
127         select HAVE_KPROBES
128         select HAVE_KRETPROBES
129         select HAVE_KVM if 64BIT
130         select HAVE_MEMBLOCK
131         select HAVE_MEMBLOCK_NODE_MAP
132         select HAVE_MEMBLOCK_PHYS_MAP
133         select HAVE_MOD_ARCH_SPECIFIC
134         select HAVE_OPROFILE
135         select HAVE_PERF_EVENTS
136         select HAVE_REGS_AND_STACK_ACCESS_API
137         select HAVE_SYSCALL_TRACEPOINTS
138         select HAVE_UID16 if 32BIT
139         select HAVE_VIRT_CPU_ACCOUNTING
140         select KTIME_SCALAR if 32BIT
141         select MODULES_USE_ELF_RELA
142         select NO_BOOTMEM
143         select OLD_SIGACTION
144         select OLD_SIGSUSPEND3
145         select SYSCTL_EXCEPTION_TRACE
146         select TTY
147         select VIRT_CPU_ACCOUNTING
148         select VIRT_TO_BUS
149 
150 config SCHED_OMIT_FRAME_POINTER
151         def_bool y
152 
153 source "init/Kconfig"
154 
155 source "kernel/Kconfig.freezer"
156 
157 menu "Processor type and features"
158 
159 config HAVE_MARCH_Z900_FEATURES
160         def_bool n
161 
162 config HAVE_MARCH_Z990_FEATURES
163         def_bool n
164         select HAVE_MARCH_Z900_FEATURES
165 
166 config HAVE_MARCH_Z9_109_FEATURES
167         def_bool n
168         select HAVE_MARCH_Z990_FEATURES
169 
170 config HAVE_MARCH_Z10_FEATURES
171         def_bool n
172         select HAVE_MARCH_Z9_109_FEATURES
173 
174 config HAVE_MARCH_Z196_FEATURES
175         def_bool n
176         select HAVE_MARCH_Z10_FEATURES
177 
178 config HAVE_MARCH_ZEC12_FEATURES
179         def_bool n
180         select HAVE_MARCH_Z196_FEATURES
181 
182 choice
183         prompt "Processor type"
184         default MARCH_G5
185 
186 config MARCH_G5
187         bool "System/390 model G5 and G6"
188         depends on !64BIT
189         help
190           Select this to build a 31 bit kernel that works
191           on all ESA/390 and z/Architecture machines.
192 
193 config MARCH_Z900
194         bool "IBM zSeries model z800 and z900"
195         select HAVE_MARCH_Z900_FEATURES if 64BIT
196         help
197           Select this to enable optimizations for model z800/z900 (2064 and
198           2066 series). This will enable some optimizations that are not
199           available on older ESA/390 (31 Bit) only CPUs.
200 
201 config MARCH_Z990
202         bool "IBM zSeries model z890 and z990"
203         select HAVE_MARCH_Z990_FEATURES if 64BIT
204         help
205           Select this to enable optimizations for model z890/z990 (2084 and
206           2086 series). The kernel will be slightly faster but will not work
207           on older machines.
208 
209 config MARCH_Z9_109
210         bool "IBM System z9"
211         select HAVE_MARCH_Z9_109_FEATURES if 64BIT
212         help
213           Select this to enable optimizations for IBM System z9 (2094 and
214           2096 series). The kernel will be slightly faster but will not work
215           on older machines.
216 
217 config MARCH_Z10
218         bool "IBM System z10"
219         select HAVE_MARCH_Z10_FEATURES if 64BIT
220         help
221           Select this to enable optimizations for IBM System z10 (2097 and
222           2098 series). The kernel will be slightly faster but will not work
223           on older machines.
224 
225 config MARCH_Z196
226         bool "IBM zEnterprise 114 and 196"
227         select HAVE_MARCH_Z196_FEATURES if 64BIT
228         help
229           Select this to enable optimizations for IBM zEnterprise 114 and 196
230           (2818 and 2817 series). The kernel will be slightly faster but will
231           not work on older machines.
232 
233 config MARCH_ZEC12
234         bool "IBM zBC12 and zEC12"
235         select HAVE_MARCH_ZEC12_FEATURES if 64BIT
236         help
237           Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
238           2827 series). The kernel will be slightly faster but will not work on
239           older machines.
240 
241 endchoice
242 
243 config MARCH_G5_TUNE
244         def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT
245 
246 config MARCH_Z900_TUNE
247         def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
248 
249 config MARCH_Z990_TUNE
250         def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
251 
252 config MARCH_Z9_109_TUNE
253         def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
254 
255 config MARCH_Z10_TUNE
256         def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
257 
258 config MARCH_Z196_TUNE
259         def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
260 
261 config MARCH_ZEC12_TUNE
262         def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
263 
264 choice
265         prompt "Tune code generation"
266         default TUNE_DEFAULT
267         help
268           Cause the compiler to tune (-mtune) the generated code for a machine.
269           This will make the code run faster on the selected machine but
270           somewhat slower on other machines.
271           This option only changes how the compiler emits instructions, not the
272           selection of instructions itself, so the resulting kernel will run on
273           all other machines.
274 
275 config TUNE_DEFAULT
276         bool "Default"
277         help
278           Tune the generated code for the target processor for which the kernel
279           will be compiled.
280 
281 config TUNE_G5
282         bool "System/390 model G5 and G6"
283 
284 config TUNE_Z900
285         bool "IBM zSeries model z800 and z900"
286 
287 config TUNE_Z990
288         bool "IBM zSeries model z890 and z990"
289 
290 config TUNE_Z9_109
291         bool "IBM System z9"
292 
293 config TUNE_Z10
294         bool "IBM System z10"
295 
296 config TUNE_Z196
297         bool "IBM zEnterprise 114 and 196"
298 
299 config TUNE_ZEC12
300         bool "IBM zBC12 and zEC12"
301 
302 endchoice
303 
304 config 64BIT
305         def_bool y
306         prompt "64 bit kernel"
307         help
308           Select this option if you have an IBM z/Architecture machine
309           and want to use the 64 bit addressing mode.
310 
311 config 32BIT
312         def_bool y if !64BIT
313 
314 config COMPAT
315         def_bool y
316         prompt "Kernel support for 31 bit emulation"
317         depends on 64BIT
318         select COMPAT_BINFMT_ELF if BINFMT_ELF
319         select ARCH_WANT_OLD_COMPAT_IPC
320         select COMPAT_OLD_SIGACTION
321         help
322           Select this option if you want to enable your system kernel to
323           handle system-calls from ELF binaries for 31 bit ESA.  This option
324           (and some other stuff like libraries and such) is needed for
325           executing 31 bit applications.  It is safe to say "Y".
326 
327 config SYSVIPC_COMPAT
328         def_bool y if COMPAT && SYSVIPC
329 
330 config KEYS_COMPAT
331         def_bool y if COMPAT && KEYS
332 
333 config SMP
334         def_bool y
335         prompt "Symmetric multi-processing support"
336         ---help---
337           This enables support for systems with more than one CPU. If you have
338           a system with only one CPU, like most personal computers, say N. If
339           you have a system with more than one CPU, say Y.
340 
341           If you say N here, the kernel will run on uni- and multiprocessor
342           machines, but will use only one CPU of a multiprocessor machine. If
343           you say Y here, the kernel will run on many, but not all,
344           uniprocessor machines. On a uniprocessor machine, the kernel
345           will run faster if you say N here.
346 
347           See also the SMP-HOWTO available at
348           <http://www.tldp.org/docs.html#howto>.
349 
350           Even if you don't know what to do here, say Y.
351 
352 config NR_CPUS
353         int "Maximum number of CPUs (2-256)"
354         range 2 256
355         depends on SMP
356         default "32" if !64BIT
357         default "64" if 64BIT
358         help
359           This allows you to specify the maximum number of CPUs which this
360           kernel will support. The maximum supported value is 256 and the
361           minimum value which makes sense is 2.
362 
363           This is purely to save memory - each supported CPU adds
364           approximately sixteen kilobytes to the kernel image.
365 
366 config HOTPLUG_CPU
367         def_bool y
368         prompt "Support for hot-pluggable CPUs"
369         depends on SMP
370         help
371           Say Y here to be able to turn CPUs off and on. CPUs
372           can be controlled through /sys/devices/system/cpu/cpu#.
373           Say N if you want to disable CPU hotplug.
374 
375 config SCHED_MC
376         def_bool n
377 
378 config SCHED_BOOK
379         def_bool y
380         prompt "Book scheduler support"
381         depends on SMP
382         select SCHED_MC
383         help
384           Book scheduler support improves the CPU scheduler's decision making
385           when dealing with machines that have several books.
386 
387 source kernel/Kconfig.preempt
388 
389 config MATHEMU
390         def_bool y
391         prompt "IEEE FPU emulation"
392         depends on MARCH_G5
393         help
394           This option is required for IEEE compliant floating point arithmetic
395           on older ESA/390 machines. Say Y unless you know your machine doesn't
396           need this.
397 
398 source kernel/Kconfig.hz
399 
400 endmenu
401 
402 menu "Memory setup"
403 
404 config ARCH_SPARSEMEM_ENABLE
405         def_bool y
406         select SPARSEMEM_VMEMMAP_ENABLE
407         select SPARSEMEM_VMEMMAP
408         select SPARSEMEM_STATIC if !64BIT
409 
410 config ARCH_SPARSEMEM_DEFAULT
411         def_bool y
412 
413 config ARCH_SELECT_MEMORY_MODEL
414         def_bool y
415 
416 config ARCH_ENABLE_MEMORY_HOTPLUG
417         def_bool y if SPARSEMEM
418 
419 config ARCH_ENABLE_MEMORY_HOTREMOVE
420         def_bool y
421 
422 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
423         def_bool y
424         depends on 64BIT
425 
426 config FORCE_MAX_ZONEORDER
427         int
428         default "9"
429 
430 source "mm/Kconfig"
431 
432 config PACK_STACK
433         def_bool y
434         prompt "Pack kernel stack"
435         help
436           This option enables the compiler option -mkernel-backchain if it
437           is available. If the option is available the compiler supports
438           the new stack layout which dramatically reduces the minimum stack
439           frame size. With an old compiler a non-leaf function needs a
440           minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
441           -mkernel-backchain the minimum size drops to 16 byte on 31 bit
442           and 24 byte on 64 bit.
443 
444           Say Y if you are unsure.
445 
446 config CHECK_STACK
447         def_bool y
448         prompt "Detect kernel stack overflow"
449         help
450           This option enables the compiler option -mstack-guard and
451           -mstack-size if they are available. If the compiler supports them
452           it will emit additional code to each function prolog to trigger
453           an illegal operation if the kernel stack is about to overflow.
454 
455           Say N if you are unsure.
456 
457 config STACK_GUARD
458         int "Size of the guard area (128-1024)"
459         range 128 1024
460         depends on CHECK_STACK
461         default "256"
462         help
463           This allows you to specify the size of the guard area at the lower
464           end of the kernel stack. If the kernel stack points into the guard
465           area on function entry an illegal operation is triggered. The size
466           needs to be a power of 2. Please keep in mind that the size of an
467           interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
468           The minimum size for the stack guard should be 256 for 31 bit and
469           512 for 64 bit.
470 
471 config WARN_DYNAMIC_STACK
472         def_bool n
473         prompt "Emit compiler warnings for function with dynamic stack usage"
474         help
475           This option enables the compiler option -mwarn-dynamicstack. If the
476           compiler supports this options generates warnings for functions
477           that dynamically allocate stack space using alloca.
478 
479           Say N if you are unsure.
480 
481 endmenu
482 
483 menu "I/O subsystem"
484 
485 config QDIO
486         def_tristate y
487         prompt "QDIO support"
488         ---help---
489           This driver provides the Queued Direct I/O base support for
490           IBM System z.
491 
492           To compile this driver as a module, choose M here: the
493           module will be called qdio.
494 
495           If unsure, say Y.
496 
497 menuconfig PCI
498         bool "PCI support"
499         default n
500         depends on 64BIT
501         select PCI_MSI
502         help
503           Enable PCI support.
504 
505 if PCI
506 
507 config PCI_NR_FUNCTIONS
508         int "Maximum number of PCI functions (1-4096)"
509         range 1 4096
510         default "64"
511         help
512           This allows you to specify the maximum number of PCI functions which
513           this kernel will support.
514 
515 config PCI_NR_MSI
516         int "Maximum number of MSI interrupts (64-32768)"
517         range 64 32768
518         default "256"
519         help
520           This defines the number of virtual interrupts the kernel will
521           provide for MSI interrupts. If you configure your system to have
522           too few drivers will fail to allocate MSI interrupts for all
523           PCI devices.
524 
525 source "drivers/pci/Kconfig"
526 source "drivers/pci/pcie/Kconfig"
527 source "drivers/pci/hotplug/Kconfig"
528 
529 endif   # PCI
530 
531 config PCI_DOMAINS
532         def_bool PCI
533 
534 config HAS_IOMEM
535         def_bool PCI
536 
537 config IOMMU_HELPER
538         def_bool PCI
539 
540 config HAS_DMA
541         def_bool PCI
542         select HAVE_DMA_API_DEBUG
543 
544 config NEED_SG_DMA_LENGTH
545         def_bool PCI
546 
547 config HAVE_DMA_ATTRS
548         def_bool PCI
549 
550 config NEED_DMA_MAP_STATE
551         def_bool PCI
552 
553 config CHSC_SCH
554         def_tristate m
555         prompt "Support for CHSC subchannels"
556         help
557           This driver allows usage of CHSC subchannels. A CHSC subchannel
558           is usually present on LPAR only.
559           The driver creates a device /dev/chsc, which may be used to
560           obtain I/O configuration information about the machine and
561           to issue asynchronous chsc commands (DANGEROUS).
562           You will usually only want to use this interface on a special
563           LPAR designated for system management.
564 
565           To compile this driver as a module, choose M here: the
566           module will be called chsc_sch.
567 
568           If unsure, say N.
569 
570 config SCM_BUS
571         def_bool y
572         depends on 64BIT
573         prompt "SCM bus driver"
574         help
575           Bus driver for Storage Class Memory.
576 
577 config EADM_SCH
578         def_tristate m
579         prompt "Support for EADM subchannels"
580         depends on SCM_BUS
581         help
582           This driver allows usage of EADM subchannels. EADM subchannels act
583           as a communication vehicle for SCM increments.
584 
585           To compile this driver as a module, choose M here: the
586           module will be called eadm_sch.
587 
588 endmenu
589 
590 menu "Dump support"
591 
592 config CRASH_DUMP
593         bool "kernel crash dumps"
594         depends on 64BIT && SMP
595         select KEXEC
596         help
597           Generate crash dump after being started by kexec.
598           Crash dump kernels are loaded in the main kernel with kexec-tools
599           into a specially reserved region and then later executed after
600           a crash by kdump/kexec.
601           Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
602           This option also enables s390 zfcpdump.
603           See also <file:Documentation/s390/zfcpdump.txt>
604 
605 endmenu
606 
607 menu "Executable file formats / Emulations"
608 
609 source "fs/Kconfig.binfmt"
610 
611 config SECCOMP
612         def_bool y
613         prompt "Enable seccomp to safely compute untrusted bytecode"
614         depends on PROC_FS
615         help
616           This kernel feature is useful for number crunching applications
617           that may need to compute untrusted bytecode during their
618           execution. By using pipes or other transports made available to
619           the process as file descriptors supporting the read/write
620           syscalls, it's possible to isolate those applications in
621           their own address space using seccomp. Once seccomp is
622           enabled via /proc/<pid>/seccomp, it cannot be disabled
623           and the task is only allowed to execute a few safe syscalls
624           defined by each seccomp mode.
625 
626           If unsure, say Y.
627 
628 endmenu
629 
630 menu "Power Management"
631 
632 config ARCH_HIBERNATION_POSSIBLE
633         def_bool y if 64BIT
634 
635 source "kernel/power/Kconfig"
636 
637 endmenu
638 
639 source "net/Kconfig"
640 
641 config PCMCIA
642         def_bool n
643 
644 config CCW
645         def_bool y
646 
647 source "drivers/Kconfig"
648 
649 source "fs/Kconfig"
650 
651 source "arch/s390/Kconfig.debug"
652 
653 source "security/Kconfig"
654 
655 source "crypto/Kconfig"
656 
657 source "lib/Kconfig"
658 
659 menu "Virtualization"
660 
661 config PFAULT
662         def_bool y
663         prompt "Pseudo page fault support"
664         help
665           Select this option, if you want to use PFAULT pseudo page fault
666           handling under VM. If running native or in LPAR, this option
667           has no effect. If your VM does not support PFAULT, PAGEEX
668           pseudo page fault handling will be used.
669           Note that VM 4.2 supports PFAULT but has a bug in its
670           implementation that causes some problems.
671           Everybody who wants to run Linux under VM != VM4.2 should select
672           this option.
673 
674 config SHARED_KERNEL
675         bool "VM shared kernel support"
676         depends on !JUMP_LABEL
677         help
678           Select this option, if you want to share the text segment of the
679           Linux kernel between different VM guests. This reduces memory
680           usage with lots of guests but greatly increases kernel size.
681           Also if a kernel was IPL'ed from a shared segment the kexec system
682           call will not work.
683           You should only select this option if you know what you are
684           doing and want to exploit this feature.
685 
686 config CMM
687         def_tristate n
688         prompt "Cooperative memory management"
689         help
690           Select this option, if you want to enable the kernel interface
691           to reduce the memory size of the system. This is accomplished
692           by allocating pages of memory and put them "on hold". This only
693           makes sense for a system running under VM where the unused pages
694           will be reused by VM for other guest systems. The interface
695           allows an external monitor to balance memory of many systems.
696           Everybody who wants to run Linux under VM should select this
697           option.
698 
699 config CMM_IUCV
700         def_bool y
701         prompt "IUCV special message interface to cooperative memory management"
702         depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
703         help
704           Select this option to enable the special message interface to
705           the cooperative memory management.
706 
707 config APPLDATA_BASE
708         def_bool n
709         prompt "Linux - VM Monitor Stream, base infrastructure"
710         depends on PROC_FS
711         help
712           This provides a kernel interface for creating and updating z/VM APPLDATA
713           monitor records. The monitor records are updated at certain time
714           intervals, once the timer is started.
715           Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
716           i.e. enables or disables monitoring on the Linux side.
717           A custom interval value (in seconds) can be written to
718           /proc/appldata/interval.
719 
720           Defaults are 60 seconds interval and timer off.
721           The /proc entries can also be read from, showing the current settings.
722 
723 config APPLDATA_MEM
724         def_tristate m
725         prompt "Monitor memory management statistics"
726         depends on APPLDATA_BASE && VM_EVENT_COUNTERS
727         help
728           This provides memory management related data to the Linux - VM Monitor
729           Stream, like paging/swapping rate, memory utilisation, etc.
730           Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
731           APPLDATA monitor record, i.e. enables or disables monitoring this record
732           on the z/VM side.
733 
734           Default is disabled.
735           The /proc entry can also be read from, showing the current settings.
736 
737           This can also be compiled as a module, which will be called
738           appldata_mem.o.
739 
740 config APPLDATA_OS
741         def_tristate m
742         prompt "Monitor OS statistics"
743         depends on APPLDATA_BASE
744         help
745           This provides OS related data to the Linux - VM Monitor Stream, like
746           CPU utilisation, etc.
747           Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
748           APPLDATA monitor record, i.e. enables or disables monitoring this record
749           on the z/VM side.
750 
751           Default is disabled.
752           This can also be compiled as a module, which will be called
753           appldata_os.o.
754 
755 config APPLDATA_NET_SUM
756         def_tristate m
757         prompt "Monitor overall network statistics"
758         depends on APPLDATA_BASE && NET
759         help
760           This provides network related data to the Linux - VM Monitor Stream,
761           currently there is only a total sum of network I/O statistics, no
762           per-interface data.
763           Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
764           APPLDATA monitor record, i.e. enables or disables monitoring this record
765           on the z/VM side.
766 
767           Default is disabled.
768           This can also be compiled as a module, which will be called
769           appldata_net_sum.o.
770 
771 config S390_HYPFS_FS
772         def_bool y
773         prompt "s390 hypervisor file system support"
774         select SYS_HYPERVISOR
775         help
776           This is a virtual file system intended to provide accounting
777           information in an s390 hypervisor environment.
778 
779 source "arch/s390/kvm/Kconfig"
780 
781 config S390_GUEST
782         def_bool y
783         prompt "s390 support for virtio devices"
784         depends on 64BIT
785         select TTY
786         select VIRTUALIZATION
787         select VIRTIO
788         select VIRTIO_CONSOLE
789         help
790           Enabling this option adds support for virtio based paravirtual device
791           drivers on s390.
792 
793           Select this option if you want to run the kernel as a guest under
794           the KVM hypervisor.
795 
796 endmenu

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