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alpha: Enable system-call auditing support.
[deliverable/linux.git] / arch / alpha / Kconfig
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1config ALPHA
2 bool
3 default y
4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_AOUT
6 select HAVE_IDE
7 select HAVE_OPROFILE
8 select HAVE_PCSPKR_PLATFORM
9 select HAVE_PERF_EVENTS
10 select HAVE_DMA_ATTRS
11 select VIRT_TO_BUS
12 select GENERIC_IRQ_PROBE
13 select AUTO_IRQ_AFFINITY if SMP
14 select GENERIC_IRQ_SHOW
15 select ARCH_WANT_OPTIONAL_GPIOLIB
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select ARCH_HAVE_NMI_SAFE_CMPXCHG
18 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
19 select AUDIT_ARCH
20 select GENERIC_CLOCKEVENTS
21 select GENERIC_SMP_IDLE_THREAD
22 select GENERIC_STRNCPY_FROM_USER
23 select GENERIC_STRNLEN_USER
24 select HAVE_MOD_ARCH_SPECIFIC
25 select MODULES_USE_ELF_RELA
26 select ODD_RT_SIGACTION
27 select OLD_SIGSUSPEND
28 help
29 The Alpha is a 64-bit general-purpose processor designed and
30 marketed by the Digital Equipment Corporation of blessed memory,
31 now Hewlett-Packard. The Alpha Linux project has a home page at
32 <http://www.alphalinux.org/>.
33
34config 64BIT
35 def_bool y
36
37config MMU
38 bool
39 default y
40
41config RWSEM_GENERIC_SPINLOCK
42 bool
43
44config RWSEM_XCHGADD_ALGORITHM
45 bool
46 default y
47
48config ARCH_HAS_ILOG2_U32
49 bool
50 default n
51
52config ARCH_HAS_ILOG2_U64
53 bool
54 default n
55
56config GENERIC_CALIBRATE_DELAY
57 bool
58 default y
59
60config ZONE_DMA
61 bool
62 default y
63
64config ARCH_DMA_ADDR_T_64BIT
65 def_bool y
66
67config NEED_DMA_MAP_STATE
68 def_bool y
69
70config NEED_SG_DMA_LENGTH
71 def_bool y
72
73config GENERIC_ISA_DMA
74 bool
75 default y
76
77source "init/Kconfig"
78source "kernel/Kconfig.freezer"
79
80config AUDIT_ARCH
81 bool
82
83menu "System setup"
84
85choice
86 prompt "Alpha system type"
87 default ALPHA_GENERIC
88 ---help---
89 This is the system type of your hardware. A "generic" kernel will
90 run on any supported Alpha system. However, if you configure a
91 kernel for your specific system, it will be faster and smaller.
92
93 To find out what type of Alpha system you have, you may want to
94 check out the Linux/Alpha FAQ, accessible on the WWW from
95 <http://www.alphalinux.org/>. In summary:
96
97 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
98 Alpha-XL XL-233, XL-266
99 AlphaBook1 Alpha laptop
100 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
101 Cabriolet AlphaPC64, AlphaPCI64
102 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
103 EB164 EB164 21164 evaluation board
104 EB64+ EB64+ 21064 evaluation board
105 EB66 EB66 21066 evaluation board
106 EB66+ EB66+ 21066 evaluation board
107 Jensen DECpc 150, DEC 2000 models 300, 500
108 LX164 AlphaPC164-LX
109 Lynx AS 2100A
110 Miata Personal Workstation 433/500/600 a/au
111 Marvel AlphaServer ES47 / ES80 / GS1280
112 Mikasa AS 1000
113 Noname AXPpci33, UDB (Multia)
114 Noritake AS 1000A, AS 600A, AS 800
115 PC164 AlphaPC164
116 Rawhide AS 1200, AS 4000, AS 4100
117 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
118 SX164 AlphaPC164-SX
119 Sable AS 2000, AS 2100
120 Shark DS 20L
121 Takara Takara (OEM)
122 Titan AlphaServer ES45 / DS25 / DS15
123 Wildfire AlphaServer GS 40/80/160/320
124
125 If you don't know what to do, choose "generic".
126
127config ALPHA_GENERIC
128 bool "Generic"
129 depends on TTY
130 help
131 A generic kernel will run on all supported Alpha hardware.
132
133config ALPHA_ALCOR
134 bool "Alcor/Alpha-XLT"
135 help
136 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
137 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
138 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
139 controller (256-bit memory bus) and a PCI interface. It also does
140 all the work required to support an external Bcache and to maintain
141 memory coherence when a PCI device DMAs into (or out of) memory.
142
143config ALPHA_XL
144 bool "Alpha-XL"
145 help
146 XL-233 and XL-266-based Alpha systems.
147
148config ALPHA_BOOK1
149 bool "AlphaBook1"
150 help
151 Dec AlphaBook1/Burns Alpha-based laptops.
152
153config ALPHA_AVANTI_CH
154 bool "Avanti"
155
156config ALPHA_CABRIOLET
157 bool "Cabriolet"
158 help
159 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
160 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
161 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
162 Bcache SIMMs. Requires power supply with 3.3V output.
163
164config ALPHA_DP264
165 bool "DP264"
166 help
167 Various 21264 systems with the tsunami core logic chipset.
168 API Networks: 264DP, UP2000(+), CS20;
169 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
170
171config ALPHA_EB164
172 bool "EB164"
173 help
174 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
175 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
176 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
177 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
178 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
179 motherboard. Requires power supply with 3.3V output.
180
181config ALPHA_EB64P_CH
182 bool "EB64+"
183
184config ALPHA_EB66
185 bool "EB66"
186 help
187 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
188 identical to EB64+. Baby PC-AT size. Runs from standard PC power
189 supply. The EB66 schematic was published as a marketing poster
190 advertising the 21066 as "the first microprocessor in the world with
191 embedded PCI".
192
193config ALPHA_EB66P
194 bool "EB66+"
195 help
196 Later variant of the EB66 board.
197
198config ALPHA_EIGER
199 bool "Eiger"
200 help
201 Apparently an obscure OEM single-board computer based on the
202 Typhoon/Tsunami chipset family. Information on it is scanty.
203
204config ALPHA_JENSEN
205 bool "Jensen"
206 help
207 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
208 of the first-generation Alpha systems. A number of these systems
209 seem to be available on the second- hand market. The Jensen is a
210 floor-standing tower system which originally used a 150MHz 21064 It
211 used programmable logic to interface a 486 EISA I/O bridge to the
212 CPU.
213
214config ALPHA_LX164
215 bool "LX164"
216 help
217 A technical overview of this board is available at
218 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
219
220config ALPHA_LYNX
221 bool "Lynx"
222 help
223 AlphaServer 2100A-based systems.
224
225config ALPHA_MARVEL
226 bool "Marvel"
227 help
228 AlphaServer ES47 / ES80 / GS1280 based on EV7.
229
230config ALPHA_MIATA
231 bool "Miata"
232 help
233 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
234 or 600au).
235
236config ALPHA_MIKASA
237 bool "Mikasa"
238 help
239 AlphaServer 1000-based Alpha systems.
240
241config ALPHA_NAUTILUS
242 bool "Nautilus"
243 help
244 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
245
246config ALPHA_NONAME_CH
247 bool "Noname"
248
249config ALPHA_NORITAKE
250 bool "Noritake"
251 help
252 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
253 systems.
254
255config ALPHA_PC164
256 bool "PC164"
257
258config ALPHA_P2K
259 bool "Platform2000"
260
261config ALPHA_RAWHIDE
262 bool "Rawhide"
263 help
264 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
265 See HOWTO at
266 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
267
268config ALPHA_RUFFIAN
269 bool "Ruffian"
270 help
271 Samsung APC164UX. There is a page on known problems and workarounds
272 at <http://www.alphalinux.org/faq/FAQ-11.html>.
273
274config ALPHA_RX164
275 bool "RX164"
276
277config ALPHA_SX164
278 bool "SX164"
279
280config ALPHA_SABLE
281 bool "Sable"
282 help
283 Digital AlphaServer 2000 and 2100-based systems.
284
285config ALPHA_SHARK
286 bool "Shark"
287
288config ALPHA_TAKARA
289 bool "Takara"
290 help
291 Alpha 11164-based OEM single-board computer.
292
293config ALPHA_TITAN
294 bool "Titan"
295 help
296 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
297
298config ALPHA_WILDFIRE
299 bool "Wildfire"
300 help
301 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
302
303endchoice
304
305# clear all implied options (don't want default values for those):
306# Most of these machines have ISA slots; not exactly sure which don't,
307# and this doesn't activate hordes of code, so do it always.
308config ISA
309 bool
310 default y
311 help
312 Find out whether you have ISA slots on your motherboard. ISA is the
313 name of a bus system, i.e. the way the CPU talks to the other stuff
314 inside your box. Other bus systems are PCI, EISA, MicroChannel
315 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
316 newer boards don't support it. If you have ISA, say Y, otherwise N.
317
318config ISA_DMA_API
319 bool
320 default y
321
322config PCI
323 bool
324 depends on !ALPHA_JENSEN
325 select GENERIC_PCI_IOMAP
326 default y
327 help
328 Find out whether you have a PCI motherboard. PCI is the name of a
329 bus system, i.e. the way the CPU talks to the other stuff inside
330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
331 VESA. If you have PCI, say Y, otherwise N.
332
333config PCI_DOMAINS
334 bool
335 default y
336
337config PCI_SYSCALL
338 def_bool PCI
339
340config IOMMU_HELPER
341 def_bool PCI
342
343config ALPHA_NONAME
344 bool
345 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
346 default y
347 help
348 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
349 UDB). This design was produced by Digital's Technical OEM (TOEM)
350 group. It uses the 21066 processor running at 166MHz or 233MHz. It
351 is a baby-AT size, and runs from a standard PC power supply. It has
352 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
353 2 versions, with either PS/2 or large DIN connectors for the
354 keyboard.
355
356config ALPHA_EV4
357 bool
358 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
359 default y if !ALPHA_LYNX
360
361config ALPHA_LCA
362 bool
363 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
364 default y
365
366config ALPHA_APECS
367 bool
368 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
369 default y
370
371config ALPHA_EB64P
372 bool
373 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
374 default y
375 help
376 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
377 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
378 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
379 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
380 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
381 Runs from standard PC power supply.
382
383config ALPHA_EV5
384 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
385 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
386
387config ALPHA_EV4
388 bool
389 default y if ALPHA_LYNX && !ALPHA_EV5
390
391config ALPHA_CIA
392 bool
393 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
394 default y
395
396config ALPHA_EV56
397 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
398 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
399
400config ALPHA_EV56
401 prompt "EV56 CPU (speed >= 333MHz)?"
402 depends on ALPHA_NORITAKE || ALPHA_PRIMO
403
404config ALPHA_EV56
405 prompt "EV56 CPU (speed >= 400MHz)?"
406 depends on ALPHA_RAWHIDE
407
408config ALPHA_PRIMO
409 bool "EV5 CPU daughtercard (model 5/xxx)?"
410 depends on ALPHA_NORITAKE || ALPHA_MIKASA
411 help
412 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
413
414config ALPHA_GAMMA
415 bool "EV5 CPU(s) (model 5/xxx)?"
416 depends on ALPHA_SABLE
417 help
418 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
419
420config ALPHA_GAMMA
421 bool
422 depends on ALPHA_LYNX
423 default y
424
425config ALPHA_T2
426 bool
427 depends on ALPHA_SABLE || ALPHA_LYNX
428 default y
429
430config ALPHA_PYXIS
431 bool
432 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
433 default y
434
435config ALPHA_EV6
436 bool
437 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
438 default y
439
440config ALPHA_TSUNAMI
441 bool
442 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
443 default y
444
445config ALPHA_EV67
446 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
447 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
448 help
449 Is this a machine based on the EV67 core? If in doubt, select N here
450 and the machine will be treated as an EV6.
451
452config ALPHA_MCPCIA
453 bool
454 depends on ALPHA_RAWHIDE
455 default y
456
457config ALPHA_POLARIS
458 bool
459 depends on ALPHA_RX164
460 default y
461
462config ALPHA_IRONGATE
463 bool
464 depends on ALPHA_NAUTILUS
465 default y
466
467config GENERIC_HWEIGHT
468 bool
469 default y if !ALPHA_EV67
470
471config ALPHA_AVANTI
472 bool
473 depends on ALPHA_XL || ALPHA_AVANTI_CH
474 default y
475 help
476 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
477 Alphas. Info at
478 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
479
480config ALPHA_BROKEN_IRQ_MASK
481 bool
482 depends on ALPHA_GENERIC || ALPHA_PC164
483 default y
484
485config VGA_HOSE
486 bool
487 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
488 default y
489 help
490 Support VGA on an arbitrary hose; needed for several platforms
491 which always have multiple hoses, and whose consoles support it.
492
493
494config ALPHA_QEMU
495 bool "Run under QEMU emulation"
496 depends on !ALPHA_GENERIC
497 ---help---
498 Assume the presence of special features supported by QEMU PALcode
499 that reduce the overhead of system emulation.
500
501 Generic kernels will auto-detect QEMU. But when building a
502 system-specific kernel, the assumption is that we want to
503 elimiate as many runtime tests as possible.
504
505 If unsure, say N.
506
507
508config ALPHA_SRM
509 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
510 depends on TTY
511 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
512 ---help---
513 There are two different types of booting firmware on Alphas: SRM,
514 which is command line driven, and ARC, which uses menus and arrow
515 keys. Details about the Linux/Alpha booting process are contained in
516 the Linux/Alpha FAQ, accessible on the WWW from
517 <http://www.alphalinux.org/>.
518
519 The usual way to load Linux on an Alpha machine is to use MILO
520 (a bootloader that lets you pass command line parameters to the
521 kernel just like lilo does for the x86 architecture) which can be
522 loaded either from ARC or can be installed directly as a permanent
523 firmware replacement from floppy (which requires changing a certain
524 jumper on the motherboard). If you want to do either of these, say N
525 here. If MILO doesn't work on your system (true for Jensen
526 motherboards), you can bypass it altogether and boot Linux directly
527 from an SRM console; say Y here in order to do that. Note that you
528 won't be able to boot from an IDE disk using SRM.
529
530 If unsure, say N.
531
532config EISA
533 bool
534 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
535 default y
536
537config ARCH_MAY_HAVE_PC_FDC
538 def_bool y
539
540config SMP
541 bool "Symmetric multi-processing support"
542 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
543 ---help---
544 This enables support for systems with more than one CPU. If you have
545 a system with only one CPU, like most personal computers, say N. If
546 you have a system with more than one CPU, say Y.
547
548 If you say N here, the kernel will run on single and multiprocessor
549 machines, but will use only one CPU of a multiprocessor machine. If
550 you say Y here, the kernel will run on many, but not all,
551 singleprocessor machines. On a singleprocessor machine, the kernel
552 will run faster if you say N here.
553
554 See also the SMP-HOWTO available at
555 <http://www.tldp.org/docs.html#howto>.
556
557 If you don't know what to do here, say N.
558
559config HAVE_DEC_LOCK
560 bool
561 depends on SMP
562 default y
563
564config NR_CPUS
565 int "Maximum number of CPUs (2-32)"
566 range 2 32
567 depends on SMP
568 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
569 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
570 help
571 MARVEL support can handle a maximum of 32 CPUs, all the others
572 with working support have a maximum of 4 CPUs.
573
574config ARCH_DISCONTIGMEM_ENABLE
575 bool "Discontiguous Memory Support"
576 help
577 Say Y to support efficient handling of discontiguous physical memory,
578 for architectures which are either NUMA (Non-Uniform Memory Access)
579 or have huge holes in the physical address space for other reasons.
580 See <file:Documentation/vm/numa> for more.
581
582source "mm/Kconfig"
583
584config NUMA
585 bool "NUMA Support (EXPERIMENTAL)"
586 depends on DISCONTIGMEM && BROKEN
587 help
588 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
589 Access). This option is for configuring high-end multiprocessor
590 server machines. If in doubt, say N.
591
592config ALPHA_WTINT
593 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
594 default y if ALPHA_QEMU
595 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
596 default n if !ALPHA_SRM && !ALPHA_GENERIC
597 default y if SMP
598 ---help---
599 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
600 to sleep until the next interrupt. This may reduce the power
601 consumed, and the heat produced by the computer. However, it has
602 the side effect of making the cycle counter unreliable as a timing
603 device across the sleep.
604
605 For emulation under QEMU, definitely say Y here, as we have other
606 mechanisms for measuring time than the cycle counter.
607
608 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
609 MILO, sleep mode is not supported so you might as well say N here.
610
611 For SMP systems we cannot use the cycle counter for timing anyway,
612 so you might as well say Y here.
613
614 If unsure, say N.
615
616config NODES_SHIFT
617 int
618 default "7"
619 depends on NEED_MULTIPLE_NODES
620
621# LARGE_VMALLOC is racy, if you *really* need it then fix it first
622config ALPHA_LARGE_VMALLOC
623 bool
624 ---help---
625 Process creation and other aspects of virtual memory management can
626 be streamlined if we restrict the kernel to one PGD for all vmalloc
627 allocations. This equates to about 8GB.
628
629 Under normal circumstances, this is so far and above what is needed
630 as to be laughable. However, there are certain applications (such
631 as benchmark-grade in-kernel web serving) that can make use of as
632 much vmalloc space as is available.
633
634 Say N unless you know you need gobs and gobs of vmalloc space.
635
636config VERBOSE_MCHECK
637 bool "Verbose Machine Checks"
638
639config VERBOSE_MCHECK_ON
640 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
641 depends on VERBOSE_MCHECK
642 default 1
643 ---help---
644 This option allows the default printing mode to be set, and then
645 possibly overridden by a boot command argument.
646
647 For example, if one wanted the option of printing verbose
648 machine checks, but wanted the default to be as if verbose
649 machine check printing was turned off, then one would choose
650 the printing mode to be 0. Then, upon reboot, one could add
651 the boot command line "verbose_mcheck=1" to get the normal
652 verbose machine check printing, or "verbose_mcheck=2" to get
653 the maximum information available.
654
655 Take the default (1) unless you want more control or more info.
656
657choice
658 prompt "Timer interrupt frequency (HZ)?"
659 default HZ_128 if ALPHA_QEMU
660 default HZ_1200 if ALPHA_RAWHIDE
661 default HZ_1024
662 ---help---
663 The frequency at which timer interrupts occur. A high frequency
664 minimizes latency, whereas a low frequency minimizes overhead of
665 process accounting. The later effect is especially significant
666 when being run under QEMU.
667
668 Note that some Alpha hardware cannot change the interrupt frequency
669 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
670
671 config HZ_32
672 bool "32 Hz"
673 config HZ_64
674 bool "64 Hz"
675 config HZ_128
676 bool "128 Hz"
677 config HZ_256
678 bool "256 Hz"
679 config HZ_1024
680 bool "1024 Hz"
681 config HZ_1200
682 bool "1200 Hz"
683endchoice
684
685config HZ
686 int
687 default 32 if HZ_32
688 default 64 if HZ_64
689 default 128 if HZ_128
690 default 256 if HZ_256
691 default 1200 if HZ_1200
692 default 1024
693
694source "drivers/pci/Kconfig"
695source "drivers/eisa/Kconfig"
696
697source "drivers/pcmcia/Kconfig"
698
699config SRM_ENV
700 tristate "SRM environment through procfs"
701 depends on PROC_FS
702 ---help---
703 If you enable this option, a subdirectory inside /proc called
704 /proc/srm_environment will give you access to the all important
705 SRM environment variables (those which have a name) and also
706 to all others (by their internal number).
707
708 SRM is something like a BIOS for Alpha machines. There are some
709 other such BIOSes, like AlphaBIOS, which this driver cannot
710 support (hey, that's not SRM!).
711
712 Despite the fact that this driver doesn't work on all Alphas (but
713 only on those which have SRM as their firmware), it's save to
714 build it even if your particular machine doesn't know about SRM
715 (or if you intend to compile a generic kernel). It will simply
716 not create those subdirectory in /proc (and give you some warning,
717 of course).
718
719 This driver is also available as a module and will be called
720 srm_env then.
721
722source "fs/Kconfig.binfmt"
723
724endmenu
725
726source "net/Kconfig"
727
728source "drivers/Kconfig"
729
730source "fs/Kconfig"
731
732source "arch/alpha/Kconfig.debug"
733
734# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
735# but we also need it if VGA_HOSE is set
736config DUMMY_CONSOLE
737 bool
738 depends on VGA_HOSE
739 default y
740
741source "security/Kconfig"
742
743source "crypto/Kconfig"
744
745source "lib/Kconfig"
746
Linux kernel - Deliverables
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