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2011-12-27[S390] topology: get rid of ifdefsHeiko Carstens1-1/+2
Remove all ifdefs from topology code and also only compile it for the CONFIG_SCHED_BOOK case. The new code selects SCHED_MC if SCHED_BOOK is selected. SCHED_MC without SCHED_BOOK is not possible anymore. Furthermore various sysfs attributes are not available anymore for the !SCHED_BOOK case. In particular all attributes that correspond to CPU polarization. But since all real world kernels have SCHED_BOOK selected anyway this doesn't matter too much. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-10-30[S390] kdump backend codeMichael Holzheu1-0/+1
This patch provides the architecture specific part of the s390 kdump support. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-26[S390] irq: merge irq.c and s390_ext.cHeiko Carstens1-4/+4
Merge irq.c and s390_ext.c into irq.c. That way all external interrupt related functions are together. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-04jump label: Add s390 supportJan Glauber1-1/+1
Implement the architecture backend for jump label support on s390. For a shared kernel booted from a NSS silently disable jump labels because the NSS is read-only. Therefore jump labels will be disabled in a shared kernel and can't be activated. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> LKML-Reference: <6935d2c41ce111e1719176ed4bbd3dbe4de80855.1300299760.git.jbaron@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2010-02-26[S390] add support for compressed kernelsMartin Schwidefsky1-0/+1
Add the "bzImage" compile target and the necessary code to generate compressed kernel images. The old style uncompressed "image" target is preserved, a simple make will build them both. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-02-26[S390] smp: always reboot on cpu 0Heiko Carstens1-0/+2
Always reboot on logical cpu 0. This makes sure that the IPL cpu is always the same and usually avoids strange numbering schemes between physical and logical cpus. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07[S390] ftrace: build ftrace.o when CONFIG_FTRACE_SYSCALLS is set for s390Aristeu Rozanski1-0/+1
Trying to build a s390x kernel with CONFIG_FTRACE_SYSCALLS will fail because ftrace.o is not built/linked. Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] hibernation: merge files and move to kernel/Heiko Carstens1-1/+1
Merge the nearly empty C files and move everything from power/ to kernel/. That way the files are easier to handle. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] improve mcount codeMartin Schwidefsky1-1/+1
Move the 64 bit mount code from mcount.S into mcount64.S and avoid code duplication. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-12[S390] ftrace: add function graph tracer supportHeiko Carstens1-4/+2
Function graph tracer support for s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-12[S390] ftrace: add dynamic ftrace supportHeiko Carstens1-0/+5
Dynamic ftrace support for s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-12[S390] add mini sclp driverHeiko Carstens1-1/+1
This adds a mini sclp device driver for very early use. The primary and probably only use will be to emit a message to the console if the cpu doesn't provide the minimum required capabilities to run the kernel. After printing the message a disabled wait will be loaded and the machine stops operating. Printing the message is also part of this patch. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-03-26[S390] split/move machine check handler codeHeiko Carstens1-1/+1
Split machine check handler code and move it to cio and kernel code where it belongs to. No functional change. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-03-26[S390] move sysinfo.c from drivers/s390 to arch/s390/kernelHeiko Carstens1-1/+3
All in sysinfo.c is core kernel code and not driver code. So move it to arch/s390/kernel. Also includes some small cleanups. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert cpu related printks to pr_xxx macros.Martin Schwidefsky1-2/+2
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] Remove config options.Martin Schwidefsky1-2/+1
On s390 we always want to run with precise cputime accounting. Remove the config options VIRT_TIMER and VIRT_CPU_ACCOUNTING. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] ftrace: function tracer backend for s390Heiko Carstens1-0/+6
This implements just the basic function tracer (_mcount) backend for s390. The dynamic variant will come later. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] introduce vdso on s390Martin Schwidefsky1-1/+6
Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for CLOCK_REALTIME/CLOCK_MONOTONIC. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-07-14[S390] Move memory detection code to own file.Heiko Carstens1-1/+1
Move memory detection code to own file and also simplify it. Also add an interface which can be called at any time to get the current memory layout. This interface is needed by our kernel internal system dumper. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Cc: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-07-14[S390] Introduce user_regset accessors for s390Martin Schwidefsky1-1/+6
Add the user_regset definitions for normal and compat processes, replace the dump_regs core dump cruft with the generic CORE_DUMP_USER_REGSET and replace binfmt_elf32.c with the generic compat_binfmt_elf.c implementation. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-04-30[S390] remove -traditionalMathieu Desnoyers1-2/+0
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-04-18Merge branch 'semaphore' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Remove DEBUG_SEMAPHORE from Kconfig Improve semaphore documentation Simplify semaphore implementation Add down_timeout and change ACPI to use it Introduce down_killable() Generic semaphore implementation Add semaphore.h to kernel_lock.c Fix quota.h includes
2008-04-17Generic semaphore implementationMatthew Wilcox1-1/+1
Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-17[S390] cpu topology support for s390.Heiko Carstens1-1/+1
Add s390 backend so we can give the scheduler some hints about the cpu topology. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-03-05[S390] Get rid of memcpy gcc warning workaround.Heiko Carstens1-0/+5
Compile smp.o with -Wno-nonnull so gcc stops warning about memcpy being used with a null parameter. Also remove the workaround code and use a char * cast instead of a void * cast to do computations. Cc: Bastian Blank <bastian@waldi.eu.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Remove TOPDIR from MakefileWANG Cong1-4/+0
This patch removes TOPDIR from arch/s390/kernel/Makefile. Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-08-22[S390] vmur: fix diag14 exceptions with addresses > 2GB.Michael Holzheu1-1/+1
There are several s390 diagnose calls, which must be executed below the 2GB memory boundary. In order to enforce this, those diagnoses must be compiled into the kernel. Currently diag 14 can be called within the vmur kernel module from addresses above 2GB. This leads to specification exceptions. This patch moves diag10, diag14 and diag210 into the new diag.c file. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] Improved oops output.Martin Schwidefsky1-1/+1
This patch adds two improvements to the oops output. First it adds an additional line after the PSW which decodes the different fields of it. Second a disassembler is added that decodes the instructions surrounding the faulting PSW. The output of a test oops now looks like this: kernel BUG at init/main.c:419 illegal operation: 0001 [#1] CPU: 0 Not tainted Process swapper (pid: 0, task: 0000000000464968, ksp: 00000000004be000) Krnl PSW : 0700000180000000 00000000000120b6 (rest_init+0x36/0x38) R:0 T:1 IO:1 EX:1 Key:0 M:0 W:0 P:0 AS:0 CC:0 PM:0 EA:3 Krnl GPRS: 0000000000000003 00000000004ba017 0000000000000022 0000000000000001 000000000003a5f6 0000000000000000 00000000004be6a8 0000000000000000 0000000000000000 00000000004b8200 0000000000003a50 0000000000008000 0000000000516368 000000000033d008 00000000000120b2 00000000004bdee0 Krnl Code: 00000000000120a6: e3e0f0980024 stg %r14,152(%r15) 00000000000120ac: c0e500014296 brasl %r14,3a5d8 00000000000120b2: a7f40001 brc 15,120b4 >00000000000120b6: 0707 bcr 0,%r7 00000000000120b8: eb7ff0500024 stmg %r7,%r15,80(%r15) 00000000000120be: c0d000195825 larl %r13,33d108 00000000000120c4: a7f13f00 tmll %r15,16128 00000000000120c8: a7840001 brc 8,120ca Call Trace: ([<00000000000120b2>] rest_init+0x32/0x38) [<00000000004be614>] start_kernel+0x37c/0x410 [<0000000000012020>] _ehead+0x20/0x80 Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-02-05[S390] Convert memory detection into C code.Heiko Carstens1-1/+1
Hopefully this will make it more maintainable and less error prone. Code makes use of search_exception_tables(). Since it calls this function before the kernel exeception table is sorted, there is an early call to sort_main_extable(). This way it's easy to use the already present infrastructure of fixup sections. Also this would allows to easily convert the rest of head[31|64].S into C code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-02-05[S390] Move init_irq_proc to the other irq related functions.Heiko Carstens1-1/+1
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-12-04[S390] Reset infrastructure for re-IPL.Heiko Carstens1-1/+1
In case of re-IPL and diag308 doesn't work we have to reset all devices manually and wait synchronously that each reset finished. This patch adds the necessary infrastucture and the first exploiter of it. Subsystems that need to add a function that needs to be called at re-IPL may register/unregister this function via struct reset_call { struct reset_call *next; void (*fn)(void); }; void register_reset_call(struct reset_call *reset); void unregister_reset_call(struct reset_call *reset); When the registered function get called the context is: - all cpus beside the current one are stopped - all machine checks and interrupts are disabled - prefixing is disabled - a default machine check handler is available for use The registered functions may not take any locks are sleep. For the common I/O layer part of this patch: Introduce a reset_call css_reset that does the following: - clear all subchannels - perform a rchp on all channel paths and wait for the resulting machine checks This replaces the calls to clear_all_subchannels() and cio_reset_channel_paths() for kexec and ccw reipl. reipl_ccw_dev() now uses reipl_find_schid() to determine the subchannel id for a given device id. Also remove cio_reset_channel_paths() and friends since they are not needed anymore. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] ipl/dump on panic.Michael Holzheu1-1/+1
It is now possible to specify a ccw/fcp dump device which is used to automatically create a system dump in case of a kernel panic. The dump device can be configured under /sys/firmware/dump. In addition it is now possible to specify a ccw/fcp device which is used for the next reboot of Linux. The reipl device can be configured under /sys/firmware/reipl. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] add kprobes support.Michael Grundy1-0/+1
Signed-off-by: Michael Grundy <grundym@us.ibm.com> Signed-off-by: David Wilder <dwilder@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-11[PATCH] syscall classes hookup for ppc and s390Al Viro1-1/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-07-10[PATCH] s390: remove BINFMT_ELF32 config optionHeiko Carstens1-2/+2
Remove BINFMT_ELF32 config option. Support should be always compiled in if CONFIG_COMPAT is set. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03[PATCH] lockdep: stacktrace subsystem, s390 supportHeiko Carstens1-0/+1
stacktrace interface for s390 as needed by lock validator. [clg@fr.ibm.com: build fix] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] sanitize building of fs/compat_ioctl.cChristoph Hellwig1-2/+1
Now that all these entries in the arch ioctl32.c files are gone [1], we can build fs/compat_ioctl.c as a normal object and kill tons of cruft. We need a special do_ioctl32_pointer handler for s390 so the compat_ptr call is done. This is not needed but harmless on all other architectures. Also remove some superflous includes in fs/compat_ioctl.c Tested on ppc64. [1] parisc still had it's PPP handler left, which is not fully correct for ppp and besides that ppp uses the generic SIOCPRIV ioctl so it'd kick in for all netdevice users. We can introduce a proper handler in one of the next patch series by adding a compat_ioctl method to struct net_device but for now let's just kill it - parisc doesn't compile in mainline anyway and I don't want this to block this patchset. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06[PATCH] s390: cleanup KconfigMartin Schwidefsky1-10/+5
Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X, ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by S390, 64BIT and COMPAT. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] s390: merge common parts of head.S and head64.SHeiko Carstens1-3/+1
Merge common parts of head.S and head64.S into head.S and move architecture specific parts to head31.S and head64.S respectively. Saves us ~500 lines of duplicated assembly code. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17[PATCH] s390: diag 0x308 reiplVolker Sameske1-1/+1
Add code to support the re-IPL method using diagnose 0x308. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] kexec: s390 supportHeiko Carstens1-0/+10
Add kexec support for s390 architecture. From: Milton Miller <miltonm@bga.com> - Fix passing of first argument to relocate_kernel assembly. - Fix Kconfig description. - Remove wrong comment and comments that describe obvious things. - Allow only KEXEC_TYPE_DEFAULT as image type -> dump not supported. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+31
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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