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2008-12-26sparc: unify module.cSam Ravnborg
o Copy module_64.c to module.c o Add all sparc specific bits to module.c o delete module_32.c o update Makefile Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26sparc64: prepare module_64.c for unificationSam Ravnborg
o Introduce a helper function o Combine sparc64 specific case values o add ifdef's around sparc64 code snippets Note: The ifdef around the BUG_ON is highly questionable but for now the safe approach was taken Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26sparc64: use bit neutral Elf symbolsSam Ravnborg
To prepare for unification use the bit neutral versions of the Elf types defined by asm/module.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26sparc: unify module.hSam Ravnborg
Use some preprocessor magic in combination with the newly introduced CONFIG_BITS to unify module.h. A few additional symbols are added as they are needed in a follow-up patch Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26sparc: introduce CONFIG_BITSSam Ravnborg
CONFIG_BITS is set to 32 for sparc32 and 64 for sparc64. This allow us to use this symbol in for example header files to ease unification of sparc32 and sparc64. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26sparc: fix hardirq.h removal falloutSam Ravnborg
When hardirq.h are removed from asm-generic/local.h a few bits fails to build. Fix these upfront. Reported by Alexey Dobriyan. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26irq: simplify for_each_irq_desc() usageKOSAKI Motohiro
Impact: cleanup all for_each_irq_desc() usage point have !desc check. then its check can move into for_each_irq_desc() macro. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branches 'timers/clocksource', 'timers/hpet', 'timers/hrtimers', ↵Ingo Molnar
'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/rtc' into timers/core
2008-12-25Merge branches 'irq/sparseirq', 'irq/genirq' and 'irq/urgent'; commit ↵Ingo Molnar
'v2.6.28' into irq/core
2008-12-25x86, sparseirq: clean up Kconfig entryIngo Molnar
Impact: improve help text Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branches 'core/debugobjects', 'core/iommu', 'core/locking', ↵Ingo Molnar
'core/printk', 'core/rcu', 'core/resources', 'core/softirq' and 'core/stacktrace' into core/core
2008-12-25Merge commit 'v2.6.28' into core/coreIngo Molnar
2008-12-25Merge branch 'sched/urgent'; commit 'v2.6.28' into sched/coreIngo Molnar
2008-12-25[S390] convert cpu related printks to pr_xxx macros.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert dcssblk and extmem printks messages to pr_xxx macros.Hongjie Yang
Signed-off-by: Hongjie Yang <hongjie@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert s390 debug feature printks to pr_xxx macros.Michael Holzheu
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert appldata printks to pr_xxx macros.Gerald Schaefer
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert setup printks to pr_xxx macros.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert hypfs printks to pr_xxx macros.Michael Holzheu
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert time printks to pr_xxx macros.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert cpacf printks to pr_xxx macros.Jan Glauber
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert cpcmd printks to pr_xxx macros.Christian Borntraeger
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] s390: Remove redundant testJulia Lawall
The loop above the modified code only terminates when rc is a valid pointer. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; expression E; position p1,p2; @@ if (x@p1 == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( x@p2 == NULL | x@p2 != NULL ) // another path to the test that is not through p1? @s exists@ local idexpression r.x; position r.p1,r.p2; @@ ... when != x@p1 ( x@p2 == NULL | x@p2 != NULL ) @fix depends on !s@ position r.p1,r.p2; expression x,E; statement S1,S2; @@ ( - if ((x@p2 != NULL) || ...) S1 | - if ((x@p2 == NULL) && ...) S1 | - BUG_ON(x@p2 == NULL); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] s390/setup: set default preferred console device "ttyS"Hendrik Brueckner
This patch sets the default console device for s390. The console= kernel parameter can be still used to switch the preferred console to some other device. In that case, console messages are also printed on the default console device (ttyS0). Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] panic_stack leak in smp_alloc_lowcoreMartin Schwidefsky
Fix freeing of the panic_stack if the allocation of async_stack failed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] clear_table inline assembly contraintsMartin Schwidefsky
Tell the compile that the clear_table inline assembly writes to the memory referenced by *s. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] Remove config options.Martin Schwidefsky
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] cpu topology: remove dead codeHeiko Carstens
Interrupts haven't been implemented. So remove the dead code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] cpu topology: introduce kernel parameterHeiko Carstens
Introduce a topology=[on|off] kernel parameter which allows to switch cpu topology on/off. Default will be off, since it looks like that for some workloards this doesn't behave very well (on s390). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] add new machine types to setup_hwcaps.Martin Schwidefsky
Add the machine types for z9-bc, z10-ec and z10-bc to the elf_platform detection in setup_hwcaps. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] Remove initial kernel stack backchain initialization.Heiko Carstens
Early init code clears the backchain of the initial kernel stack frame. This is not necessary since it is pre initialized with zeros. Plus it was broken on 64 bit since it cleared only four of eight bytes. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] s390: use the new byteorder headersHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] Add processor type march=z10 and a processor type safety check.Martin Schwidefsky
This patch adds the code generation option for IBM System z10 and adds a check in head[31,64].S to prevents the execution of a kernel compiled for a new processor type on an old machine. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] remove warnings with functions ending in BUGMartin Schwidefsky
Functions which end in a BUG() statement and skip the return statement cause compile warnings on s390, e.g.: mm/bootmem.c: In function 'mark_bootmem': mm/bootmem.c:321: warning: control reaches end of non-void function To avoid the warning add an endless loop to the BUG() macro. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] mark disabled_wait as noreturn functionHeiko Carstens
disabled_wait() won't return, so add an __attribute__((noreturn)). This will remove a false positive finding which our internal code checker reports. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] cio: update sac valuesPeter Oberparleiter
Values for the sac field have changed - update code accordingly. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] remove ptrace warning on 31 bit.Martin Schwidefsky
A kernel compile on 31 bit gives the following warnings in ptrace.c: arch/s390/kernel/ptrace.c: In function 'peek_user': arch/s390/kernel/ptrace.c:207: warning: unused variable 'dummy' arch/s390/kernel/ptrace.c: In function 'poke_user': arch/s390/kernel/ptrace.c:315: warning: unused variable 'dummy' Getting rid of the dummy variables removes the warnings. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] ftrace: function tracer backend for s390Heiko Carstens
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] service level interface.Martin Schwidefsky
Add a new proc interface /proc/service_levels that allows any code to report a relevant service level, e.g. the microcode level of devices, the service level of the hypervisor, etc. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] qdio: rework debug feature loggingJan Glauber
- make qdio_trace a per device view - remove s390dbf exceptions - remove CONFIG_QDIO_DEBUG, not needed anymore if we check for the level before calling sprintf - use snprintf for dbf entries - add start markers to see if the dbf view wrapped - add a global error view for all queues Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] qdio: fix qeth port count detectionJan Glauber
qeth needs to get the port count information before qdio has allocated a page for the chsc operation. Extend qdio_get_ssqd_desc() to store the data in the specified structure. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] zcrypt: Use of Thin InterruptsFelix Beck
When the machine supports AP adapter interrupts polling will be switched off at module initialization and the driver will work in interrupt mode. Signed-off-by: Felix Beck <felix.beck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] Move stfle to header file.Heiko Carstens
stfle will be needed by the ap_bus module to figure out wether the AP queue adapter interruption facility is installed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert s390 to generic IPI infrastructureHeiko Carstens
Since etr/stp don't need the old smp_call_function semantics anymore we can convert s390 to the generic IPI infrastructure. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] serialize stp/etr workMartin Schwidefsky
The work function dispatched with schedule_work() can be run twice on different cpus because run_workqueue clears the WORK_STRUCT_PENDING bit and then executes the function. Another cpu can call schedule_work() again and run the work function a second time before the first call is completed. This patch serialized the etr and stp work function with a mutex. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] convert etr/stp to stop_machine interfaceHeiko Carstens
This converts the etr and stp code to the new stop_machine interface which allows to synchronize all cpus without allocating any memory. This way we get rid of the only reason why we haven't converted s390 to the generic IPI interface yet. 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 Schwidefsky
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>
2008-12-25[S390] arch_setup_additional_pages argumentsMartin Schwidefsky
arch_setup_additional_pages currently gets two arguments, the binary format descripton and an indication if the process uses an executable stack or not. The second argument is not used by anybody, it could be removed without replacement. What actually does make sense is to pass an indication if the process uses the elf interpreter or not. The glibc code will not use anything from the vdso if the process does not use the dynamic linker, so for statically linked binaries the architecture backend can choose not to map the vdso. Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] cpu topology: dont destroy cpu sets on topology changeHeiko Carstens
Call rebuild_sched_domains instead of arch_reinit_sched_domains if cpu topology changes. This leaves cpu sets alone which otherwise would be destroyed. If and how it makes sense to define cpu sets on a virtualized architecture is another question. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] audit: get s390 ret_from_fork in sync with other architecturesAl Viro
On s390 we have ret_from_fork jump not to the "do all work we normally do on return from syscall" as on x86, ppc, etc., but to the "do all such work except audit". Historical reasons - the codepath triggered when we have AUDIT process flag set is separated from the normall one and they converge at sysc_return, which is the common part of post-syscall work. And does not include calling audit_syscall_exit() - that's done in the end of sysc_tracesys path, just before that path jumps to sysc_return. IOW, the child returning from fork()/clone()/vfork() doesn't call audit_syscall_exit() at all, so no matter what we do with its audit context, we are not going to see the audit entry. The fix is simple: have ret_from_fork go to the point just past the call of sys_.... in the 'we have AUDIT flag set' path. There we have (64bit variant; for 31bit the situation is the same): sysc_tracenogo: tm __TI_flags+7(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT) jz sysc_return la %r2,SP_PTREGS(%r15) # load pt_regs larl %r14,sysc_return # return point is sysc_return jg do_syscall_trace_exit which is precisely what we need - check the flag, bugger off to sysc_return if not set, otherwise call do_syscall_trace_exit() and bugger off to sysc_return. r9 has just been properly set by ret_from_fork itself, so we are fine. Tested on s390x, seems to work fine. WARNING: it's been about 16 years since my last contact with 3X0 assembler[1], so additional review would be very welcome. I don't think I've managed to screw it up, but... [1] that *was* in another country and besides, the box is dead... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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