Version:  2.0.40 2.2.26 2.4.37 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2

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 y
 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 ARCH_SUPPORTS_UPROBES
 62         def_bool y
 63 
 64 config S390
 65         def_bool y
 66         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 67         select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 68         select ARCH_HAS_ELF_RANDOMIZE
 69         select ARCH_HAS_GCOV_PROFILE_ALL
 70         select ARCH_HAS_SG_CHAIN
 71         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 72         select ARCH_INLINE_READ_LOCK
 73         select ARCH_INLINE_READ_LOCK_BH
 74         select ARCH_INLINE_READ_LOCK_IRQ
 75         select ARCH_INLINE_READ_LOCK_IRQSAVE
 76         select ARCH_INLINE_READ_TRYLOCK
 77         select ARCH_INLINE_READ_UNLOCK
 78         select ARCH_INLINE_READ_UNLOCK_BH
 79         select ARCH_INLINE_READ_UNLOCK_IRQ
 80         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
 81         select ARCH_INLINE_SPIN_LOCK
 82         select ARCH_INLINE_SPIN_LOCK_BH
 83         select ARCH_INLINE_SPIN_LOCK_IRQ
 84         select ARCH_INLINE_SPIN_LOCK_IRQSAVE
 85         select ARCH_INLINE_SPIN_TRYLOCK
 86         select ARCH_INLINE_SPIN_TRYLOCK_BH
 87         select ARCH_INLINE_SPIN_UNLOCK
 88         select ARCH_INLINE_SPIN_UNLOCK_BH
 89         select ARCH_INLINE_SPIN_UNLOCK_IRQ
 90         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
 91         select ARCH_INLINE_WRITE_LOCK
 92         select ARCH_INLINE_WRITE_LOCK_BH
 93         select ARCH_INLINE_WRITE_LOCK_IRQ
 94         select ARCH_INLINE_WRITE_LOCK_IRQSAVE
 95         select ARCH_INLINE_WRITE_TRYLOCK
 96         select ARCH_INLINE_WRITE_UNLOCK
 97         select ARCH_INLINE_WRITE_UNLOCK_BH
 98         select ARCH_INLINE_WRITE_UNLOCK_IRQ
 99         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
100         select ARCH_SAVE_PAGE_KEYS if HIBERNATION
101         select ARCH_SUPPORTS_ATOMIC_RMW
102         select ARCH_USE_CMPXCHG_LOCKREF
103         select ARCH_WANT_IPC_PARSE_VERSION
104         select BUILDTIME_EXTABLE_SORT
105         select CLONE_BACKWARDS2
106         select DYNAMIC_FTRACE if FUNCTION_TRACER
107         select GENERIC_CLOCKEVENTS
108         select GENERIC_CPU_DEVICES if !SMP
109         select GENERIC_FIND_FIRST_BIT
110         select GENERIC_SMP_IDLE_THREAD
111         select GENERIC_TIME_VSYSCALL
112         select HAVE_ALIGNED_STRUCT_PAGE if SLUB
113         select HAVE_ARCH_AUDITSYSCALL
114         select HAVE_ARCH_JUMP_LABEL
115         select HAVE_ARCH_SECCOMP_FILTER
116         select HAVE_ARCH_TRACEHOOK
117         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
118         select HAVE_BPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
119         select HAVE_CMPXCHG_DOUBLE
120         select HAVE_CMPXCHG_LOCAL
121         select HAVE_DEBUG_KMEMLEAK
122         select HAVE_DYNAMIC_FTRACE
123         select HAVE_DYNAMIC_FTRACE_WITH_REGS
124         select HAVE_FTRACE_MCOUNT_RECORD
125         select HAVE_FUNCTION_GRAPH_TRACER
126         select HAVE_FUNCTION_TRACER
127         select HAVE_FUTEX_CMPXCHG if FUTEX
128         select HAVE_KERNEL_BZIP2
129         select HAVE_KERNEL_GZIP
130         select HAVE_KERNEL_LZ4
131         select HAVE_KERNEL_LZMA
132         select HAVE_KERNEL_LZO
133         select HAVE_KERNEL_XZ
134         select HAVE_KPROBES
135         select HAVE_KRETPROBES
136         select HAVE_KVM
137         select HAVE_LIVEPATCH
138         select HAVE_MEMBLOCK
139         select HAVE_MEMBLOCK_NODE_MAP
140         select HAVE_MEMBLOCK_PHYS_MAP
141         select HAVE_MOD_ARCH_SPECIFIC
142         select HAVE_OPROFILE
143         select HAVE_PERF_EVENTS
144         select HAVE_REGS_AND_STACK_ACCESS_API
145         select HAVE_SYSCALL_TRACEPOINTS
146         select HAVE_VIRT_CPU_ACCOUNTING
147         select MODULES_USE_ELF_RELA
148         select NO_BOOTMEM
149         select OLD_SIGACTION
150         select OLD_SIGSUSPEND3
151         select SYSCTL_EXCEPTION_TRACE
152         select TTY
153         select VIRT_CPU_ACCOUNTING
154         select VIRT_TO_BUS
155 
156 config SCHED_OMIT_FRAME_POINTER
157         def_bool y
158 
159 config PGTABLE_LEVELS
160         int
161         default 4 if 64BIT
162         default 2
163 
164 source "init/Kconfig"
165 
166 source "kernel/Kconfig.freezer"
167 
168 source "kernel/livepatch/Kconfig"
169 
170 menu "Processor type and features"
171 
172 config HAVE_MARCH_Z900_FEATURES
173         def_bool n
174 
175 config HAVE_MARCH_Z990_FEATURES
176         def_bool n
177         select HAVE_MARCH_Z900_FEATURES
178 
179 config HAVE_MARCH_Z9_109_FEATURES
180         def_bool n
181         select HAVE_MARCH_Z990_FEATURES
182 
183 config HAVE_MARCH_Z10_FEATURES
184         def_bool n
185         select HAVE_MARCH_Z9_109_FEATURES
186 
187 config HAVE_MARCH_Z196_FEATURES
188         def_bool n
189         select HAVE_MARCH_Z10_FEATURES
190 
191 config HAVE_MARCH_ZEC12_FEATURES
192         def_bool n
193         select HAVE_MARCH_Z196_FEATURES
194 
195 config HAVE_MARCH_Z13_FEATURES
196         def_bool n
197         select HAVE_MARCH_ZEC12_FEATURES
198 
199 choice
200         prompt "Processor type"
201         default MARCH_Z900
202 
203 config MARCH_Z900
204         bool "IBM zSeries model z800 and z900"
205         select HAVE_MARCH_Z900_FEATURES
206         help
207           Select this to enable optimizations for model z800/z900 (2064 and
208           2066 series). This will enable some optimizations that are not
209           available on older ESA/390 (31 Bit) only CPUs.
210 
211 config MARCH_Z990
212         bool "IBM zSeries model z890 and z990"
213         select HAVE_MARCH_Z990_FEATURES
214         help
215           Select this to enable optimizations for model z890/z990 (2084 and
216           2086 series). The kernel will be slightly faster but will not work
217           on older machines.
218 
219 config MARCH_Z9_109
220         bool "IBM System z9"
221         select HAVE_MARCH_Z9_109_FEATURES
222         help
223           Select this to enable optimizations for IBM System z9 (2094 and
224           2096 series). The kernel will be slightly faster but will not work
225           on older machines.
226 
227 config MARCH_Z10
228         bool "IBM System z10"
229         select HAVE_MARCH_Z10_FEATURES
230         help
231           Select this to enable optimizations for IBM System z10 (2097 and
232           2098 series). The kernel will be slightly faster but will not work
233           on older machines.
234 
235 config MARCH_Z196
236         bool "IBM zEnterprise 114 and 196"
237         select HAVE_MARCH_Z196_FEATURES
238         help
239           Select this to enable optimizations for IBM zEnterprise 114 and 196
240           (2818 and 2817 series). The kernel will be slightly faster but will
241           not work on older machines.
242 
243 config MARCH_ZEC12
244         bool "IBM zBC12 and zEC12"
245         select HAVE_MARCH_ZEC12_FEATURES
246         help
247           Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
248           2827 series). The kernel will be slightly faster but will not work on
249           older machines.
250 
251 config MARCH_Z13
252         bool "IBM z13"
253         select HAVE_MARCH_Z13_FEATURES
254         help
255           Select this to enable optimizations for IBM z13 (2964 series).
256           The kernel will be slightly faster but will not work on older
257           machines.
258 
259 endchoice
260 
261 config MARCH_Z900_TUNE
262         def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
263 
264 config MARCH_Z990_TUNE
265         def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
266 
267 config MARCH_Z9_109_TUNE
268         def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
269 
270 config MARCH_Z10_TUNE
271         def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
272 
273 config MARCH_Z196_TUNE
274         def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
275 
276 config MARCH_ZEC12_TUNE
277         def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
278 
279 config MARCH_Z13_TUNE
280         def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
281 
282 choice
283         prompt "Tune code generation"
284         default TUNE_DEFAULT
285         help
286           Cause the compiler to tune (-mtune) the generated code for a machine.
287           This will make the code run faster on the selected machine but
288           somewhat slower on other machines.
289           This option only changes how the compiler emits instructions, not the
290           selection of instructions itself, so the resulting kernel will run on
291           all other machines.
292 
293 config TUNE_DEFAULT
294         bool "Default"
295         help
296           Tune the generated code for the target processor for which the kernel
297           will be compiled.
298 
299 config TUNE_Z900
300         bool "IBM zSeries model z800 and z900"
301 
302 config TUNE_Z990
303         bool "IBM zSeries model z890 and z990"
304 
305 config TUNE_Z9_109
306         bool "IBM System z9"
307 
308 config TUNE_Z10
309         bool "IBM System z10"
310 
311 config TUNE_Z196
312         bool "IBM zEnterprise 114 and 196"
313 
314 config TUNE_ZEC12
315         bool "IBM zBC12 and zEC12"
316 
317 config TUNE_Z13
318         bool "IBM z13"
319 
320 endchoice
321 
322 config 64BIT
323         def_bool y
324 
325 config COMPAT
326         def_bool y
327         prompt "Kernel support for 31 bit emulation"
328         select COMPAT_BINFMT_ELF if BINFMT_ELF
329         select ARCH_WANT_OLD_COMPAT_IPC
330         select COMPAT_OLD_SIGACTION
331         depends on MULTIUSER
332         help
333           Select this option if you want to enable your system kernel to
334           handle system-calls from ELF binaries for 31 bit ESA.  This option
335           (and some other stuff like libraries and such) is needed for
336           executing 31 bit applications.  It is safe to say "Y".
337 
338 config SYSVIPC_COMPAT
339         def_bool y if COMPAT && SYSVIPC
340 
341 config KEYS_COMPAT
342         def_bool y if COMPAT && KEYS
343 
344 config SMP
345         def_bool y
346         prompt "Symmetric multi-processing support"
347         ---help---
348           This enables support for systems with more than one CPU. If you have
349           a system with only one CPU, like most personal computers, say N. If
350           you have a system with more than one CPU, say Y.
351 
352           If you say N here, the kernel will run on uni- and multiprocessor
353           machines, but will use only one CPU of a multiprocessor machine. If
354           you say Y here, the kernel will run on many, but not all,
355           uniprocessor machines. On a uniprocessor machine, the kernel
356           will run faster if you say N here.
357 
358           See also the SMP-HOWTO available at
359           <http://www.tldp.org/docs.html#howto>.
360 
361           Even if you don't know what to do here, say Y.
362 
363 config NR_CPUS
364         int "Maximum number of CPUs (2-512)"
365         range 2 512
366         depends on SMP
367         default "64"
368         help
369           This allows you to specify the maximum number of CPUs which this
370           kernel will support. The maximum supported value is 512 and the
371           minimum value which makes sense is 2.
372 
373           This is purely to save memory - each supported CPU adds
374           approximately sixteen kilobytes to the kernel image.
375 
376 config HOTPLUG_CPU
377         def_bool y
378         prompt "Support for hot-pluggable CPUs"
379         depends on SMP
380         help
381           Say Y here to be able to turn CPUs off and on. CPUs
382           can be controlled through /sys/devices/system/cpu/cpu#.
383           Say N if you want to disable CPU hotplug.
384 
385 config SCHED_SMT
386         def_bool n
387 
388 config SCHED_MC
389         def_bool n
390 
391 config SCHED_BOOK
392         def_bool n
393 
394 config SCHED_TOPOLOGY
395         def_bool y
396         prompt "Topology scheduler support"
397         depends on SMP
398         select SCHED_SMT
399         select SCHED_MC
400         select SCHED_BOOK
401         help
402           Topology scheduler support improves the CPU scheduler's decision
403           making when dealing with machines that have multi-threading,
404           multiple cores or multiple books.
405 
406 source kernel/Kconfig.preempt
407 
408 source kernel/Kconfig.hz
409 
410 endmenu
411 
412 menu "Memory setup"
413 
414 config ARCH_SPARSEMEM_ENABLE
415         def_bool y
416         select SPARSEMEM_VMEMMAP_ENABLE
417         select SPARSEMEM_VMEMMAP
418 
419 config ARCH_SPARSEMEM_DEFAULT
420         def_bool y
421 
422 config ARCH_SELECT_MEMORY_MODEL
423         def_bool y
424 
425 config ARCH_ENABLE_MEMORY_HOTPLUG
426         def_bool y if SPARSEMEM
427 
428 config ARCH_ENABLE_MEMORY_HOTREMOVE
429         def_bool y
430 
431 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
432         def_bool y
433 
434 config FORCE_MAX_ZONEORDER
435         int
436         default "9"
437 
438 source "mm/Kconfig"
439 
440 config PACK_STACK
441         def_bool y
442         prompt "Pack kernel stack"
443         help
444           This option enables the compiler option -mkernel-backchain if it
445           is available. If the option is available the compiler supports
446           the new stack layout which dramatically reduces the minimum stack
447           frame size. With an old compiler a non-leaf function needs a
448           minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
449           -mkernel-backchain the minimum size drops to 16 byte on 31 bit
450           and 24 byte on 64 bit.
451 
452           Say Y if you are unsure.
453 
454 config CHECK_STACK
455         def_bool y
456         prompt "Detect kernel stack overflow"
457         help
458           This option enables the compiler option -mstack-guard and
459           -mstack-size if they are available. If the compiler supports them
460           it will emit additional code to each function prolog to trigger
461           an illegal operation if the kernel stack is about to overflow.
462 
463           Say N if you are unsure.
464 
465 config STACK_GUARD
466         int "Size of the guard area (128-1024)"
467         range 128 1024
468         depends on CHECK_STACK
469         default "256"
470         help
471           This allows you to specify the size of the guard area at the lower
472           end of the kernel stack. If the kernel stack points into the guard
473           area on function entry an illegal operation is triggered. The size
474           needs to be a power of 2. Please keep in mind that the size of an
475           interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
476           The minimum size for the stack guard should be 256 for 31 bit and
477           512 for 64 bit.
478 
479 config WARN_DYNAMIC_STACK
480         def_bool n
481         prompt "Emit compiler warnings for function with dynamic stack usage"
482         help
483           This option enables the compiler option -mwarn-dynamicstack. If the
484           compiler supports this options generates warnings for functions
485           that dynamically allocate stack space using alloca.
486 
487           Say N if you are unsure.
488 
489 endmenu
490 
491 menu "I/O subsystem"
492 
493 config QDIO
494         def_tristate y
495         prompt "QDIO support"
496         ---help---
497           This driver provides the Queued Direct I/O base support for
498           IBM System z.
499 
500           To compile this driver as a module, choose M here: the
501           module will be called qdio.
502 
503           If unsure, say Y.
504 
505 menuconfig PCI
506         bool "PCI support"
507         select HAVE_DMA_ATTRS
508         select PCI_MSI
509         help
510           Enable PCI support.
511 
512 if PCI
513 
514 config PCI_NR_FUNCTIONS
515         int "Maximum number of PCI functions (1-4096)"
516         range 1 4096
517         default "64"
518         help
519           This allows you to specify the maximum number of PCI functions which
520           this kernel will support.
521 
522 config PCI_NR_MSI
523         int "Maximum number of MSI interrupts (64-32768)"
524         range 64 32768
525         default "256"
526         help
527           This defines the number of virtual interrupts the kernel will
528           provide for MSI interrupts. If you configure your system to have
529           too few drivers will fail to allocate MSI interrupts for all
530           PCI devices.
531 
532 source "drivers/pci/Kconfig"
533 source "drivers/pci/pcie/Kconfig"
534 source "drivers/pci/hotplug/Kconfig"
535 
536 endif   # PCI
537 
538 config PCI_DOMAINS
539         def_bool PCI
540 
541 config HAS_IOMEM
542         def_bool PCI
543 
544 config IOMMU_HELPER
545         def_bool PCI
546 
547 config HAS_DMA
548         def_bool PCI
549         select HAVE_DMA_API_DEBUG
550 
551 config NEED_SG_DMA_LENGTH
552         def_bool PCI
553 
554 config NEED_DMA_MAP_STATE
555         def_bool PCI
556 
557 config CHSC_SCH
558         def_tristate m
559         prompt "Support for CHSC subchannels"
560         help
561           This driver allows usage of CHSC subchannels. A CHSC subchannel
562           is usually present on LPAR only.
563           The driver creates a device /dev/chsc, which may be used to
564           obtain I/O configuration information about the machine and
565           to issue asynchronous chsc commands (DANGEROUS).
566           You will usually only want to use this interface on a special
567           LPAR designated for system management.
568 
569           To compile this driver as a module, choose M here: the
570           module will be called chsc_sch.
571 
572           If unsure, say N.
573 
574 config SCM_BUS
575         def_bool y
576         prompt "SCM bus driver"
577         help
578           Bus driver for Storage Class Memory.
579 
580 config EADM_SCH
581         def_tristate m
582         prompt "Support for EADM subchannels"
583         depends on SCM_BUS
584         help
585           This driver allows usage of EADM subchannels. EADM subchannels act
586           as a communication vehicle for SCM increments.
587 
588           To compile this driver as a module, choose M here: the
589           module will be called eadm_sch.
590 
591 endmenu
592 
593 menu "Dump support"
594 
595 config CRASH_DUMP
596         bool "kernel crash dumps"
597         depends on SMP
598         select KEXEC
599         help
600           Generate crash dump after being started by kexec.
601           Crash dump kernels are loaded in the main kernel with kexec-tools
602           into a specially reserved region and then later executed after
603           a crash by kdump/kexec.
604           Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
605           This option also enables s390 zfcpdump.
606           See also <file:Documentation/s390/zfcpdump.txt>
607 
608 endmenu
609 
610 menu "Executable file formats / Emulations"
611 
612 source "fs/Kconfig.binfmt"
613 
614 config SECCOMP
615         def_bool y
616         prompt "Enable seccomp to safely compute untrusted bytecode"
617         depends on PROC_FS
618         help
619           This kernel feature is useful for number crunching applications
620           that may need to compute untrusted bytecode during their
621           execution. By using pipes or other transports made available to
622           the process as file descriptors supporting the read/write
623           syscalls, it's possible to isolate those applications in
624           their own address space using seccomp. Once seccomp is
625           enabled via /proc/<pid>/seccomp, it cannot be disabled
626           and the task is only allowed to execute a few safe syscalls
627           defined by each seccomp mode.
628 
629           If unsure, say Y.
630 
631 endmenu
632 
633 menu "Power Management"
634 
635 config ARCH_HIBERNATION_POSSIBLE
636         def_bool y
637 
638 source "kernel/power/Kconfig"
639 
640 endmenu
641 
642 source "net/Kconfig"
643 
644 config PCMCIA
645         def_bool n
646 
647 config CCW
648         def_bool y
649 
650 source "drivers/Kconfig"
651 
652 source "fs/Kconfig"
653 
654 source "arch/s390/Kconfig.debug"
655 
656 source "security/Kconfig"
657 
658 source "crypto/Kconfig"
659 
660 source "lib/Kconfig"
661 
662 menu "Virtualization"
663 
664 config PFAULT
665         def_bool y
666         prompt "Pseudo page fault support"
667         help
668           Select this option, if you want to use PFAULT pseudo page fault
669           handling under VM. If running native or in LPAR, this option
670           has no effect. If your VM does not support PFAULT, PAGEEX
671           pseudo page fault handling will be used.
672           Note that VM 4.2 supports PFAULT but has a bug in its
673           implementation that causes some problems.
674           Everybody who wants to run Linux under VM != VM4.2 should select
675           this option.
676 
677 config SHARED_KERNEL
678         bool "VM shared kernel support"
679         depends on !JUMP_LABEL
680         help
681           Select this option, if you want to share the text segment of the
682           Linux kernel between different VM guests. This reduces memory
683           usage with lots of guests but greatly increases kernel size.
684           Also if a kernel was IPL'ed from a shared segment the kexec system
685           call will not work.
686           You should only select this option if you know what you are
687           doing and want to exploit this feature.
688 
689 config CMM
690         def_tristate n
691         prompt "Cooperative memory management"
692         help
693           Select this option, if you want to enable the kernel interface
694           to reduce the memory size of the system. This is accomplished
695           by allocating pages of memory and put them "on hold". This only
696           makes sense for a system running under VM where the unused pages
697           will be reused by VM for other guest systems. The interface
698           allows an external monitor to balance memory of many systems.
699           Everybody who wants to run Linux under VM should select this
700           option.
701 
702 config CMM_IUCV
703         def_bool y
704         prompt "IUCV special message interface to cooperative memory management"
705         depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
706         help
707           Select this option to enable the special message interface to
708           the cooperative memory management.
709 
710 config APPLDATA_BASE
711         def_bool n
712         prompt "Linux - VM Monitor Stream, base infrastructure"
713         depends on PROC_FS
714         help
715           This provides a kernel interface for creating and updating z/VM APPLDATA
716           monitor records. The monitor records are updated at certain time
717           intervals, once the timer is started.
718           Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
719           i.e. enables or disables monitoring on the Linux side.
720           A custom interval value (in seconds) can be written to
721           /proc/appldata/interval.
722 
723           Defaults are 60 seconds interval and timer off.
724           The /proc entries can also be read from, showing the current settings.
725 
726 config APPLDATA_MEM
727         def_tristate m
728         prompt "Monitor memory management statistics"
729         depends on APPLDATA_BASE && VM_EVENT_COUNTERS
730         help
731           This provides memory management related data to the Linux - VM Monitor
732           Stream, like paging/swapping rate, memory utilisation, etc.
733           Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
734           APPLDATA monitor record, i.e. enables or disables monitoring this record
735           on the z/VM side.
736 
737           Default is disabled.
738           The /proc entry can also be read from, showing the current settings.
739 
740           This can also be compiled as a module, which will be called
741           appldata_mem.o.
742 
743 config APPLDATA_OS
744         def_tristate m
745         prompt "Monitor OS statistics"
746         depends on APPLDATA_BASE
747         help
748           This provides OS related data to the Linux - VM Monitor Stream, like
749           CPU utilisation, etc.
750           Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
751           APPLDATA monitor record, i.e. enables or disables monitoring this record
752           on the z/VM side.
753 
754           Default is disabled.
755           This can also be compiled as a module, which will be called
756           appldata_os.o.
757 
758 config APPLDATA_NET_SUM
759         def_tristate m
760         prompt "Monitor overall network statistics"
761         depends on APPLDATA_BASE && NET
762         help
763           This provides network related data to the Linux - VM Monitor Stream,
764           currently there is only a total sum of network I/O statistics, no
765           per-interface data.
766           Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
767           APPLDATA monitor record, i.e. enables or disables monitoring this record
768           on the z/VM side.
769 
770           Default is disabled.
771           This can also be compiled as a module, which will be called
772           appldata_net_sum.o.
773 
774 config S390_HYPFS_FS
775         def_bool y
776         prompt "s390 hypervisor file system support"
777         select SYS_HYPERVISOR
778         help
779           This is a virtual file system intended to provide accounting
780           information in an s390 hypervisor environment.
781 
782 source "arch/s390/kvm/Kconfig"
783 
784 config S390_GUEST
785         def_bool y
786         prompt "s390 support for virtio devices"
787         select TTY
788         select VIRTUALIZATION
789         select VIRTIO
790         select VIRTIO_CONSOLE
791         help
792           Enabling this option adds support for virtio based paravirtual device
793           drivers on s390.
794 
795           Select this option if you want to run the kernel as a guest under
796           the KVM hypervisor.
797 
798 endmenu

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