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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
Heiko Carstensdbd70fb2008-04-17 07:46:12 +02006config SCHED_MC
7 def_bool y
8 depends on SMP
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010config MMU
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020011 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -070012
Christoph Lameter66701b12007-02-10 01:43:09 -080013config ZONE_DMA
Heiko Carstens118bcd32007-02-21 10:55:12 +010014 def_bool y
15 depends on 64BIT
Christoph Lameter66701b12007-02-10 01:43:09 -080016
Ingo Molnar2b105ff2006-07-03 00:25:02 -070017config LOCKDEP_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020018 def_bool y
Ingo Molnar2b105ff2006-07-03 00:25:02 -070019
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070020config STACKTRACE_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020021 def_bool y
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070022
Heiko Carstensa3afe702008-02-05 16:50:45 +010023config HAVE_LATENCYTOP_SUPPORT
24 def_bool y
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026config RWSEM_GENERIC_SPINLOCK
27 bool
28
29config RWSEM_XCHGADD_ALGORITHM
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020030 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
David Howellsf0d1b0b2006-12-08 02:37:49 -080032config ARCH_HAS_ILOG2_U32
33 bool
34 default n
35
36config ARCH_HAS_ILOG2_U64
37 bool
38 default n
39
Akinobu Mita7e33db42006-03-26 01:39:34 -080040config GENERIC_HWEIGHT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020041 def_bool y
Akinobu Mita7e33db42006-03-26 01:39:34 -080042
Martin Schwidefskydc64bef2006-10-06 16:38:48 +020043config GENERIC_TIME
44 def_bool y
45
Martin Schwidefskyb0206322008-12-25 13:38:36 +010046config GENERIC_TIME_VSYSCALL
47 def_bool y
48
Heiko Carstens5a62b192008-04-17 07:46:25 +020049config GENERIC_CLOCKEVENTS
50 def_bool y
51
Heiko Carstensc0007f12007-04-27 16:01:42 +020052config GENERIC_BUG
53 bool
54 depends on BUG
55 default y
56
Heiko Carstens52499f42010-02-26 22:37:44 +010057config GENERIC_BUG_RELATIVE_POINTERS
58 def_bool y
59
Al Viro23db7642007-02-11 18:15:29 +000060config NO_IOMEM
Al Viro5ea81762007-02-11 15:41:31 +000061 def_bool y
62
Heiko Carstens411f0f32007-05-06 14:49:09 -070063config NO_DMA
64 def_bool y
65
Martin Schwidefskyb6b40c52008-02-05 16:50:42 +010066config GENERIC_LOCKBREAK
67 bool
68 default y
69 depends on SMP && PREEMPT
70
Carsten Otte402b0862008-03-25 18:47:10 +010071config PGSTE
72 bool
73 default y if KVM
74
Martin Schwidefskyc185b782008-12-25 13:39:25 +010075config VIRT_CPU_ACCOUNTING
76 def_bool y
77
Akinobu Mita6a11f752009-03-31 15:23:17 -070078config ARCH_SUPPORTS_DEBUG_PAGEALLOC
79 def_bool y
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081mainmenu "Linux Kernel Configuration"
82
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080083config S390
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020084 def_bool y
Heiko Carstensca9fc752008-12-25 13:38:39 +010085 select USE_GENERIC_SMP_HELPERS if SMP
Heiko Carstensed6bb612009-01-14 14:14:01 +010086 select HAVE_SYSCALL_WRAPPERS
Heiko Carstens5d360a72008-12-25 13:38:56 +010087 select HAVE_FUNCTION_TRACER
Heiko Carstens8b4488f2009-06-12 10:26:45 +020088 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
Heiko Carstensdfd9f7a2009-06-12 10:26:44 +020089 select HAVE_FTRACE_MCOUNT_RECORD
Josh Stone66700002009-08-24 14:43:11 -070090 select HAVE_SYSCALL_TRACEPOINTS
Heiko Carstensdfd9f7a2009-06-12 10:26:44 +020091 select HAVE_DYNAMIC_FTRACE
Heiko Carstens88dbd202009-06-12 10:26:46 +020092 select HAVE_FUNCTION_GRAPH_TRACER
Heiko Carstens952974ac62010-02-12 13:38:40 +010093 select HAVE_REGS_AND_STACK_ACCESS_API
Heiko Carstens36cd3c92009-04-09 18:48:34 +020094 select HAVE_DEFAULT_NO_SPIN_MUTEXES
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050095 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050096 select HAVE_KPROBES
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080097 select HAVE_KRETPROBES
Christian Borntraeger77b455f2008-03-25 18:47:36 +010098 select HAVE_KVM if 64BIT
Martin Schwidefsky753c4dd2008-10-10 21:33:20 +020099 select HAVE_ARCH_TRACEHOOK
Rusty Russell98a79d62008-12-13 21:19:41 +1030100 select INIT_ALL_POSSIBLE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200101 select HAVE_PERF_EVENTS
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +0100102 select HAVE_KERNEL_GZIP
103 select HAVE_KERNEL_BZIP2
104 select HAVE_KERNEL_LZMA
Heiko Carstenscdf56642010-05-26 23:27:12 +0200105 select HAVE_KERNEL_LZO
Thomas Gleixner6beb0002009-11-09 15:21:34 +0000106 select ARCH_INLINE_SPIN_TRYLOCK
107 select ARCH_INLINE_SPIN_TRYLOCK_BH
108 select ARCH_INLINE_SPIN_LOCK
109 select ARCH_INLINE_SPIN_LOCK_BH
110 select ARCH_INLINE_SPIN_LOCK_IRQ
111 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
112 select ARCH_INLINE_SPIN_UNLOCK
113 select ARCH_INLINE_SPIN_UNLOCK_BH
114 select ARCH_INLINE_SPIN_UNLOCK_IRQ
115 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
116 select ARCH_INLINE_READ_TRYLOCK
117 select ARCH_INLINE_READ_LOCK
118 select ARCH_INLINE_READ_LOCK_BH
119 select ARCH_INLINE_READ_LOCK_IRQ
120 select ARCH_INLINE_READ_LOCK_IRQSAVE
121 select ARCH_INLINE_READ_UNLOCK
122 select ARCH_INLINE_READ_UNLOCK_BH
123 select ARCH_INLINE_READ_UNLOCK_IRQ
124 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
125 select ARCH_INLINE_WRITE_TRYLOCK
126 select ARCH_INLINE_WRITE_LOCK
127 select ARCH_INLINE_WRITE_LOCK_BH
128 select ARCH_INLINE_WRITE_LOCK_IRQ
129 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
130 select ARCH_INLINE_WRITE_UNLOCK
131 select ARCH_INLINE_WRITE_UNLOCK_BH
132 select ARCH_INLINE_WRITE_UNLOCK_IRQ
133 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200135config SCHED_OMIT_FRAME_POINTER
136 bool
137 default y
138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139source "init/Kconfig"
140
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700141source "kernel/Kconfig.freezer"
142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143menu "Base setup"
144
145comment "Processor type and features"
146
Heiko Carstens5a62b192008-04-17 07:46:25 +0200147source "kernel/time/Kconfig"
148
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800149config 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 bool "64 bit kernel"
151 help
152 Select this option if you have a 64 bit IBM zSeries machine
153 and want to use the 64 bit addressing mode.
154
Martin Schwidefskyd9f7a742006-09-28 16:55:39 +0200155config 32BIT
156 bool
157 default y if !64BIT
158
Martin Schwidefsky07606302009-07-07 16:37:13 +0200159config KTIME_SCALAR
160 def_bool 32BIT
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162config SMP
163 bool "Symmetric multi-processing support"
164 ---help---
165 This enables support for systems with more than one CPU. If you have
166 a system with only one CPU, like most personal computers, say N. If
167 you have a system with more than one CPU, say Y.
168
169 If you say N here, the kernel will run on single and multiprocessor
170 machines, but will use only one CPU of a multiprocessor machine. If
171 you say Y here, the kernel will run on many, but not all,
172 singleprocessor machines. On a singleprocessor machine, the kernel
173 will run faster if you say N here.
174
Adrian Bunk03502fa2008-02-03 15:50:21 +0200175 See also the SMP-HOWTO available at
176 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178 Even if you don't know what to do here, say Y.
179
180config NR_CPUS
181 int "Maximum number of CPUs (2-64)"
182 range 2 64
183 depends on SMP
Heiko Carstens057c5cb2008-02-19 15:29:25 +0100184 default "32" if !64BIT
185 default "64" if 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 help
187 This allows you to specify the maximum number of CPUs which this
188 kernel will support. The maximum supported value is 64 and the
189 minimum value which makes sense is 2.
190
191 This is purely to save memory - each supported CPU adds
192 approximately sixteen kilobytes to the kernel image.
193
194config HOTPLUG_CPU
195 bool "Support for hot-pluggable CPUs"
196 depends on SMP
197 select HOTPLUG
198 default n
199 help
200 Say Y here to be able to turn CPUs off and on. CPUs
201 can be controlled through /sys/devices/system/cpu/cpu#.
202 Say N if you want to disable CPU hotplug.
203
204config MATHEMU
205 bool "IEEE FPU emulation"
206 depends on MARCH_G5
207 help
208 This option is required for IEEE compliant floating point arithmetic
209 on older S/390 machines. Say Y unless you know your machine doesn't
210 need this.
211
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800212config COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 bool "Kernel support for 31 bit emulation"
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800214 depends on 64BIT
Martin Schwidefsky63506c42008-07-14 09:58:54 +0200215 select COMPAT_BINFMT_ELF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 help
217 Select this option if you want to enable your system kernel to
218 handle system-calls from ELF binaries for 31 bit ESA. This option
219 (and some other stuff like libraries and such) is needed for
220 executing 31 bit applications. It is safe to say "Y".
221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222config SYSVIPC_COMPAT
223 bool
224 depends on COMPAT && SYSVIPC
225 default y
226
Al Viroe65e1fc2006-09-12 03:04:40 -0400227config AUDIT_ARCH
228 bool
229 default y
230
Gerald Schaeferc1821c22007-02-05 21:18:17 +0100231config S390_EXEC_PROTECT
232 bool "Data execute protection"
Gerald Schaeferc1821c22007-02-05 21:18:17 +0100233 help
234 This option allows to enable a buffer overflow protection for user
235 space programs and it also selects the addressing mode option above.
236 The kernel parameter noexec=on will enable this feature and also
237 switch the addressing modes, default is disabled. Enabling this (via
238 kernel parameter) on machines earlier than IBM System z9-109 EC/BC
239 will reduce system performance.
240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241comment "Code generation options"
242
243choice
244 prompt "Processor type"
245 default MARCH_G5
246
247config MARCH_G5
248 bool "S/390 model G5 and G6"
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800249 depends on !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 help
251 Select this to build a 31 bit kernel that works
252 on all S/390 and zSeries machines.
253
254config MARCH_Z900
255 bool "IBM eServer zSeries model z800 and z900"
256 help
257 Select this to optimize for zSeries machines. This
258 will enable some optimizations that are not available
259 on older 31 bit only CPUs.
260
261config MARCH_Z990
262 bool "IBM eServer zSeries model z890 and z990"
263 help
264 Select this enable optimizations for model z890/z990.
265 This will be slightly faster but does not work on
266 older machines such as the z900.
267
Christian Borntraeger0efa4702006-09-28 16:55:46 +0200268config MARCH_Z9_109
269 bool "IBM System z9"
270 help
271 Select this to enable optimizations for IBM System z9-109, IBM
272 System z9 Enterprise Class (z9 EC), and IBM System z9 Business
273 Class (z9 BC). The kernel will be slightly faster but will not
274 work on older machines such as the z990, z890, z900, and z800.
275
Martin Schwidefskye37f50e2008-12-25 13:39:19 +0100276config MARCH_Z10
277 bool "IBM System z10"
278 help
279 Select this to enable optimizations for IBM System z10. The
280 kernel will be slightly faster but will not work on older
281 machines such as the z990, z890, z900, z800, z9-109, z9-ec
282 and z9-bc.
283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284endchoice
285
286config PACK_STACK
287 bool "Pack kernel stack"
288 help
289 This option enables the compiler option -mkernel-backchain if it
290 is available. If the option is available the compiler supports
291 the new stack layout which dramatically reduces the minimum stack
292 frame size. With an old compiler a non-leaf function needs a
293 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
294 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
295 and 24 byte on 64 bit.
296
297 Say Y if you are unsure.
298
299config SMALL_STACK
Heiko Carstens7f5a8ba2008-10-28 11:10:21 +0100300 bool "Use 8kb for kernel stack instead of 16kb"
301 depends on PACK_STACK && 64BIT && !LOCKDEP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 help
303 If you say Y here and the compiler supports the -mkernel-backchain
Heiko Carstens7f5a8ba2008-10-28 11:10:21 +0100304 option the kernel will use a smaller kernel stack size. The reduced
305 size is 8kb instead of 16kb. This allows to run more threads on a
306 system and reduces the pressure on the memory management for higher
307 order page allocations.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
309 Say N if you are unsure.
310
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311config CHECK_STACK
312 bool "Detect kernel stack overflow"
313 help
314 This option enables the compiler option -mstack-guard and
315 -mstack-size if they are available. If the compiler supports them
316 it will emit additional code to each function prolog to trigger
317 an illegal operation if the kernel stack is about to overflow.
318
319 Say N if you are unsure.
320
321config STACK_GUARD
322 int "Size of the guard area (128-1024)"
323 range 128 1024
324 depends on CHECK_STACK
325 default "256"
326 help
327 This allows you to specify the size of the guard area at the lower
328 end of the kernel stack. If the kernel stack points into the guard
329 area on function entry an illegal operation is triggered. The size
330 needs to be a power of 2. Please keep in mind that the size of an
331 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
332 The minimum size for the stack guard should be 256 for 31 bit and
333 512 for 64 bit.
334
335config WARN_STACK
336 bool "Emit compiler warnings for function with broken stack usage"
337 help
338 This option enables the compiler options -mwarn-framesize and
339 -mwarn-dynamicstack. If the compiler supports these options it
340 will generate warnings for function which either use alloca or
Frederik Schwarzer025dfda2008-10-16 19:02:37 +0200341 create a stack frame bigger than CONFIG_WARN_STACK_SIZE.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
343 Say N if you are unsure.
344
345config WARN_STACK_SIZE
346 int "Maximum frame size considered safe (128-2048)"
347 range 128 2048
348 depends on WARN_STACK
Heiko Carstensc5a37252008-07-17 17:16:44 +0200349 default "2048"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 help
351 This allows you to specify the maximum frame size a function may
352 have without the compiler complaining about it.
353
Heiko Carstens39b742f2006-12-08 15:56:10 +0100354config ARCH_POPULATES_NODE_MAP
355 def_bool y
356
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200357comment "Kernel preemption"
358
359source "kernel/Kconfig.preempt"
360
Heiko Carstens17f34582008-04-30 13:38:47 +0200361config ARCH_SPARSEMEM_ENABLE
362 def_bool y
363 select SPARSEMEM_VMEMMAP_ENABLE
364 select SPARSEMEM_VMEMMAP
Heiko Carstens148f1672008-06-10 10:03:18 +0200365 select SPARSEMEM_STATIC if !64BIT
Heiko Carstens17f34582008-04-30 13:38:47 +0200366
367config ARCH_SPARSEMEM_DEFAULT
368 def_bool y
369
Hans-Joachim Picht97195d62008-05-30 10:03:24 +0200370config ARCH_SELECT_MEMORY_MODEL
371 def_bool y
372
Heiko Carstens421c1752008-07-14 09:59:18 +0200373config ARCH_ENABLE_MEMORY_HOTPLUG
374 def_bool y
375 depends on SPARSEMEM
376
Gerald Schaefer7e9238f2008-08-01 16:39:16 +0200377config ARCH_ENABLE_MEMORY_HOTREMOVE
378 def_bool y
379
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +0200380config ARCH_HIBERNATION_POSSIBLE
381 def_bool y if 64BIT
382
Dave Hansen3f22ab22005-06-23 00:07:43 -0700383source "mm/Kconfig"
384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385comment "I/O subsystem configuration"
386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387config QDIO
388 tristate "QDIO support"
389 ---help---
Frank Pavlic8129ee12006-01-06 00:19:20 -0800390 This driver provides the Queued Direct I/O base support for
Ursula Braunefca13b2008-04-17 07:46:19 +0200391 IBM System z.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
393 To compile this driver as a module, choose M here: the
394 module will be called qdio.
395
396 If unsure, say Y.
397
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200398config CHSC_SCH
399 tristate "Support for CHSC subchannels"
400 help
401 This driver allows usage of CHSC subchannels. A CHSC subchannel
402 is usually present on LPAR only.
403 The driver creates a device /dev/chsc, which may be used to
404 obtain I/O configuration information about the machine and
405 to issue asynchronous chsc commands (DANGEROUS).
406 You will usually only want to use this interface on a special
407 LPAR designated for system management.
408
409 To compile this driver as a module, choose M here: the
410 module will be called chsc_sch.
411
412 If unsure, say N.
413
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414comment "Misc"
415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416config IPL
417 bool "Builtin IPL record support"
418 help
419 If you want to use the produced kernel to IPL directly from a
420 device, you have to merge a bootsector specific to the device
421 into the first bytes of the kernel. You will have to select the
422 IPL device.
423
424choice
425 prompt "IPL method generated into head.S"
426 depends on IPL
Heiko Carstens46e79512008-10-28 11:10:20 +0100427 default IPL_VM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 help
429 Select "tape" if you want to IPL the image from a Tape.
430
431 Select "vm_reader" if you are running under VM/ESA and want
432 to IPL the image from the emulated card reader.
433
434config IPL_TAPE
435 bool "tape"
436
437config IPL_VM
438 bool "vm_reader"
439
440endchoice
441
442source "fs/Kconfig.binfmt"
443
Heiko Carstens684de392008-03-05 12:37:14 +0100444config FORCE_MAX_ZONEORDER
445 int
446 default "9"
447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448config PFAULT
449 bool "Pseudo page fault support"
450 help
451 Select this option, if you want to use PFAULT pseudo page fault
452 handling under VM. If running native or in LPAR, this option
453 has no effect. If your VM does not support PFAULT, PAGEEX
454 pseudo page fault handling will be used.
455 Note that VM 4.2 supports PFAULT but has a bug in its
456 implementation that causes some problems.
457 Everybody who wants to run Linux under VM != VM4.2 should select
458 this option.
459
460config SHARED_KERNEL
461 bool "VM shared kernel support"
462 help
463 Select this option, if you want to share the text segment of the
464 Linux kernel between different VM guests. This reduces memory
465 usage with lots of guests but greatly increases kernel size.
Heiko Carstens9c9c1762007-03-05 23:35:45 +0100466 Also if a kernel was IPL'ed from a shared segment the kexec system
467 call will not work.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 You should only select this option if you know what you are
469 doing and want to exploit this feature.
470
471config CMM
472 tristate "Cooperative memory management"
473 help
474 Select this option, if you want to enable the kernel interface
475 to reduce the memory size of the system. This is accomplished
476 by allocating pages of memory and put them "on hold". This only
477 makes sense for a system running under VM where the unused pages
478 will be reused by VM for other guest systems. The interface
479 allows an external monitor to balance memory of many systems.
480 Everybody who wants to run Linux under VM should select this
481 option.
482
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483config CMM_IUCV
484 bool "IUCV special message interface to cooperative memory management"
485 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
486 help
487 Select this option to enable the special message interface to
488 the cooperative memory management.
489
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490config APPLDATA_BASE
491 bool "Linux - VM Monitor Stream, base infrastructure"
Martin Schwidefskyc185b782008-12-25 13:39:25 +0100492 depends on PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 help
494 This provides a kernel interface for creating and updating z/VM APPLDATA
495 monitor records. The monitor records are updated at certain time
496 intervals, once the timer is started.
497 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
498 i.e. enables or disables monitoring on the Linux side.
499 A custom interval value (in seconds) can be written to
500 /proc/appldata/interval.
501
502 Defaults are 60 seconds interval and timer off.
503 The /proc entries can also be read from, showing the current settings.
504
505config APPLDATA_MEM
506 tristate "Monitor memory management statistics"
Al Viro62fb2ba2006-12-13 00:34:59 -0800507 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 help
509 This provides memory management related data to the Linux - VM Monitor
510 Stream, like paging/swapping rate, memory utilisation, etc.
511 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
512 APPLDATA monitor record, i.e. enables or disables monitoring this record
513 on the z/VM side.
514
515 Default is disabled.
516 The /proc entry can also be read from, showing the current settings.
517
518 This can also be compiled as a module, which will be called
519 appldata_mem.o.
520
521config APPLDATA_OS
522 tristate "Monitor OS statistics"
523 depends on APPLDATA_BASE
524 help
525 This provides OS related data to the Linux - VM Monitor Stream, like
526 CPU utilisation, etc.
527 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
528 APPLDATA monitor record, i.e. enables or disables monitoring this record
529 on the z/VM side.
530
531 Default is disabled.
532 This can also be compiled as a module, which will be called
533 appldata_os.o.
534
535config APPLDATA_NET_SUM
536 tristate "Monitor overall network statistics"
Sachin Sant70193af2009-03-26 15:24:00 +0100537 depends on APPLDATA_BASE && NET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 help
539 This provides network related data to the Linux - VM Monitor Stream,
540 currently there is only a total sum of network I/O statistics, no
541 per-interface data.
542 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
543 APPLDATA monitor record, i.e. enables or disables monitoring this record
544 on the z/VM side.
545
546 Default is disabled.
547 This can also be compiled as a module, which will be called
548 appldata_net_sum.o.
549
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200550source kernel/Kconfig.hz
551
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700552config S390_HYPFS_FS
553 bool "s390 hypervisor file system support"
554 select SYS_HYPERVISOR
555 default y
556 help
557 This is a virtual file system intended to provide accounting
558 information in an s390 hypervisor environment.
559
Heiko Carstenscf13f0e2005-06-25 14:58:11 -0700560config KEXEC
Heiko Carstens07d43ce2006-09-20 15:59:29 +0200561 bool "kexec system call"
Heiko Carstenscf13f0e2005-06-25 14:58:11 -0700562 help
563 kexec is a system call that implements the ability to shutdown your
564 current kernel, and to start another kernel. It is like a reboot
565 but is independent of hardware/microcode support.
566
Michael Holzheu411ed322007-04-27 16:01:49 +0200567config ZFCPDUMP
Michael Holzheu59f2e692009-03-26 15:24:46 +0100568 bool "zfcpdump support"
Michael Holzheu411ed322007-04-27 16:01:49 +0200569 select SMP
570 default n
571 help
572 Select this option if you want to build an zfcpdump enabled kernel.
Dirk Hohndele4031492007-10-30 13:37:19 -0700573 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
Michael Holzheu411ed322007-04-27 16:01:49 +0200574
Carsten Ottefa587742008-03-25 18:47:44 +0100575config S390_GUEST
Christian Borntraeger20766c02008-08-29 13:30:56 +0200576bool "s390 guest support for KVM (EXPERIMENTAL)"
Carsten Ottefa587742008-03-25 18:47:44 +0100577 depends on 64BIT && EXPERIMENTAL
578 select VIRTIO
579 select VIRTIO_RING
Christian Borntraegerfaeba8302008-06-20 15:24:18 +0200580 select VIRTIO_CONSOLE
Carsten Ottefa587742008-03-25 18:47:44 +0100581 help
Christian Borntraeger20766c02008-08-29 13:30:56 +0200582 Select this option if you want to run the kernel as a guest under
583 the KVM hypervisor. This will add detection for KVM as well as a
584 virtio transport. If KVM is detected, the virtio console will be
585 the default console.
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200586
587config SECCOMP
588 bool "Enable seccomp to safely compute untrusted bytecode"
589 depends on PROC_FS
590 default y
591 help
592 This kernel feature is useful for number crunching applications
593 that may need to compute untrusted bytecode during their
594 execution. By using pipes or other transports made available to
595 the process as file descriptors supporting the read/write
596 syscalls, it's possible to isolate those applications in
597 their own address space using seccomp. Once seccomp is
598 enabled via /proc/<pid>/seccomp, it cannot be disabled
599 and the task is only allowed to execute a few safe syscalls
600 defined by each seccomp mode.
601
602 If unsure, say Y.
603
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604endmenu
605
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +0200606menu "Power Management"
607
608source "kernel/power/Kconfig"
609
610endmenu
611
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700612source "net/Kconfig"
613
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614config PCMCIA
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200615 def_bool n
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200617config CCW
618 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200620source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
622source "fs/Kconfig"
623
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624source "arch/s390/Kconfig.debug"
625
626source "security/Kconfig"
627
628source "crypto/Kconfig"
629
630source "lib/Kconfig"
Christian Borntraeger77b455f2008-03-25 18:47:36 +0100631
632source "arch/s390/kvm/Kconfig"