17 Oct, 2007
3 commits
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Introduce architecture dependent kretprobe blacklists to prohibit users
from inserting return probes on the function in which kprobes can be
inserted but kretprobes can not.This patch also removes "__kprobes" mark from "__switch_to" on x86_64 and
registers "__switch_to" to the blacklist on x86-64, because that mark is to
prohibit user from inserting only kretprobe.Signed-off-by: Masami Hiramatsu
Cc: Prasanna S Panchamukhi
Acked-by: Ananth N Mavinakayanahalli
Cc: Anil S Keshavamurthy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We have had complaints where a threaded application is left in a bad state
after one of it's threads is killed when we hit a VM: out_of_memory
condition.Killing just one of the process threads can leave the application in a bad
state, whereas killing the entire process group would allow for the
application to restart, or be otherwise handled, and makes it very obvious
that something has gone wrong.This change allows the entire process group to be taken down, rather
than just the one thread.Signed-off-by: Will Schmidt
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Ian Molton
Cc: Haavard Skinnemoen
Cc: Mikael Starvik
Cc: David Howells
Cc: Andi Kleen
Cc: "Luck, Tony"
Cc: Hirokazu Takata
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Matthew Wilcox
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Richard Curnow
Cc: William Lee Irwin III
Cc: "David S. Miller"
Cc: Chris Zankel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Identical handlers of PTRACE_DETACH go into ptrace_request().
Not touching compat code.
Not touching archs that don't call ptrace_request.Signed-off-by: Alexey Dobriyan
Acked-by: Christoph Hellwig
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Oct, 2007
11 commits
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Run the lockdep_sys_exit hook before returning to user space.
Reviewed-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar -
Make sure parameter list of the pfault token function is eight byte
aligned. Otherwise we can get specification exceptions.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Replace the hardcoded 4096 value with the PAGE_SIZE macro.
Converted a few decimal numbers to readable hex numbers.Use of PAGE_SIZE required a small change to page.h
to allow PAGE_SIZE to be used from assembler/linker scripts.Signed-off-by: Sam Ravnborg
Signed-off-by: Martin Schwidefsky -
Introduce a consistent style in vmlinux.lds.
This style is gradually being introduced for all archs.A few lables were moved inside the section definition so
they are assigned the correct value of gcc decide to align
the content to another address than the one . has.
In the past this has fixed several bugs but for s390 it
will not impact due to all the alignmnet already introduced.Stabs definitions are consolidated in asm-generic/vmlinux.lds.h
This patch also introduce support for DWARF - without knowing
if this makes sense for s390.Signed-off-by: Sam Ravnborg
Signed-off-by: Martin Schwidefsky -
After assigning values to specific registers memset was called. This
may clobber the contents of the used registers.
To solve this extract the two used inline assemblies into small
functions that don't call any functions.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
If we use the CLEAR ipl option, reipl is faster, since then VM can release
the memory, which has been paged out.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
Also removes a bunch of ^L in drivers/s390/cio/cmf.c
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
There is no need to assign "0" to "hops" twice. Remove one assigment.
Signed-off-by: Christian Borntraeger
Signed-off-by: Martin Schwidefsky -
The termination condition of the loop that prints the operands of
an instruction doesn't stop after the maximum of 6 operands.
It continues with the operands of the next instruction format
instead which create really long lines.Signed-off-by: Martin Schwidefsky
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arch/s390/Kconfig tells us that CONFIG_APPLDATA_BASE is bool and hence can
never be built modular. Given this, defining appldata_exit() function is
pointless (and wasteful, actually). Remove all that.Previous patch annotated appldata_offline_cpu() as __cpuexit, but now with the
__exit function appldata_exit() gone, the only callsite that references it is
__cpuinit, so this function can also be __cpuinit, thereby saving space when
HOTPLUG_CPU=n.Signed-off-by: Satyam Sharma
Cc: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Martin Schwidefsky -
appldata_offline_cpu() is only called from __cpuinit-marked hotplug
notifier callback and from the __exit-marked module_exit function,
therefore candidate for __cpuexit.BTW the __exit module_exit function appldata_exit() of this driver fails to
unregister_hotcpu_notifier() the notifier_block that was registered by
appldata_init() during module startup. This will lead to oops if hotplug
notification comes after module has been unloaded. Let's fix this by
unregistering the notifier appropriately (before appldata_offline_cpu()'ing
the CPUs).Signed-off-by: Satyam Sharma
Cc: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Martin Schwidefsky
11 Oct, 2007
5 commits
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There are currently several SHA implementations that all define their own
initialization vectors and size values. Since this values are idential
move them to a header file under include/crypto.Signed-off-by: Jan Glauber
Signed-off-by: Herbert Xu -
Loading the crypto algorithm by the alias instead of by module directly
has the advantage that all possible implementations of this algorithm
are loaded automatically and the crypto API can choose the best one
depending on its priority.Additionally it ensures that the generic implementation as well as the
HW driver (if available) is loaded in case the HW driver needs the
generic version as fallback in corner cases.Also remove the probe for sha1 in padlock's init code.
Quote from Herbert:
The probe is actually pointless since we can always probe when
the algorithm is actually used which does not lead to dead-locks
like this.Signed-off-by: Sebastian Siewior
Signed-off-by: Herbert Xu -
Loading the crypto algorithm by the alias instead of by module directly
has the advantage that all possible implementations of this algorithm
are loaded automatically and the crypto API can choose the best one
depending on its priority.Additionally it ensures that the generic implementation as well as the
HW driver (if available) is loaded in case the HW driver needs the
generic version as fallback in corner cases.Signed-off-by: Sebastian Siewior
Signed-off-by: Herbert Xu -
This patch makes most of the generic device layer network
namespace safe. This patch makes dev_base_head a
network namespace variable, and then it picks up
a few associated variables. The functions:
dev_getbyhwaddr
dev_getfirsthwbytype
dev_get_by_flags
dev_get_by_name
__dev_get_by_name
dev_get_by_index
__dev_get_by_index
dev_ioctl
dev_ethtool
dev_load
wireless_process_ioctlwere modified to take a network namespace argument, and
deal with it.vlan_ioctl_set and brioctl_set were modified so their
hooks will receive a network namespace argument.So basically anthing in the core of the network stack that was
affected to by the change of dev_base was modified to handle
multiple network namespaces. The rest of the network stack was
simply modified to explicitly use &init_net the initial network
namespace. This can be fixed when those components of the network
stack are modified to handle multiple network namespaces.For now the ifindex generator is left global.
Fundametally ifindex numbers are per namespace, or else
we will have corner case problems with migration when
we get that far.At the same time there are assumptions in the network stack
that the ifindex of a network device won't change. Making
the ifindex number global seems a good compromise until
the network stack can cope with ifindex changes when
you change namespaces, and the like.Signed-off-by: Eric W. Biederman
Signed-off-by: David S. Miller -
As noted by Christoph Hellwig, pktgen was the only user so
it can now be removed.[ Add missing cases caught by Adrian Bunk. -DaveM ]
Signed-off-by: Robert Olsson
Signed-off-by: David S. Miller
22 Aug, 2007
4 commits
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Placing a kprobe on "bc" instruction (s390/s390x) can cause an oops.
The instruction length is encoded into the first two bits of the s390
instruction. Kprobe is incorrectly computing the instruction length.
The instruction length is used for determining what type of "fix-up" is
needed for conditional branch instruction. The problem can bee seen by
placing a kprobe on a "bc" instruction that will not branch. The
results is that Kprobe incorrectly computes the new instruction
pointer (psw.addr) after single stepping the instruction. The problem
is corrected with this patch.Signed-off-by: David Wilder
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
hypfs removes the whole hypfs directory tree and creates a new one, when a
process triggers an update by writing to the "update" attribute. When removing
and creating files, it is necessary to lock the inode of the parent directory
where the files live. Currently hypfs does not lock the parent inode, which
can lead to inode corruption. This patch:
* Introduces correct locking
* Fixes i_nlink reference counting for inodes, when creating directories
* Adds info printk, when hypfs filesystem has been mountedSigned-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
The instruction table for b2 opcodes was missing an opfrag value
for the cpya instruction. All instructions specified after cpya
were not considered by the disassembler. The fix is simple and
obvious - add the opfrag field to the cpya instruction.Signed-off-by: Christian Borntraeger
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
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
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
10 Aug, 2007
2 commits
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0437e109e1841607f2988891eaa36c531c6aa6ac removes the migration
cost init code. Remove the s390 leftovers as well.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
30 Jul, 2007
1 commit
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Remove fs.h from mm.h. For this,
1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
2) Add back fs.h or less bloated headers (err.h) to files that need it.As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
rebuilt down to 3444 (-12.3%).Cross-compile tested without regressions on my two usual configs and (sigh):
alpha arm-mx1ads mips-bigsur powerpc-ebony
alpha-allnoconfig arm-neponset mips-capcella powerpc-g5
alpha-defconfig arm-netwinder mips-cobalt powerpc-holly
alpha-up arm-netx mips-db1000 powerpc-iseries
arm arm-ns9xxx mips-db1100 powerpc-linkstation
arm-assabet arm-omap_h2_1610 mips-db1200 powerpc-lite5200
arm-at91rm9200dk arm-onearm mips-db1500 powerpc-maple
arm-at91rm9200ek arm-picotux200 mips-db1550 powerpc-mpc7448_hpc2
arm-at91sam9260ek arm-pleb mips-ddb5477 powerpc-mpc8272_ads
arm-at91sam9261ek arm-pnx4008 mips-decstation powerpc-mpc8313_rdb
arm-at91sam9263ek arm-pxa255-idp mips-e55 powerpc-mpc832x_mds
arm-at91sam9rlek arm-realview mips-emma2rh powerpc-mpc832x_rdb
arm-ateb9200 arm-realview-smp mips-excite powerpc-mpc834x_itx
arm-badge4 arm-rpc mips-fulong powerpc-mpc834x_itxgp
arm-carmeva arm-s3c2410 mips-ip22 powerpc-mpc834x_mds
arm-cerfcube arm-shannon mips-ip27 powerpc-mpc836x_mds
arm-clps7500 arm-shark mips-ip32 powerpc-mpc8540_ads
arm-collie arm-simpad mips-jazz powerpc-mpc8544_ds
arm-corgi arm-spitz mips-jmr3927 powerpc-mpc8560_ads
arm-csb337 arm-trizeps4 mips-malta powerpc-mpc8568mds
arm-csb637 arm-versatile mips-mipssim powerpc-mpc85xx_cds
arm-ebsa110 i386 mips-mpc30x powerpc-mpc8641_hpcn
arm-edb7211 i386-allnoconfig mips-msp71xx powerpc-mpc866_ads
arm-em_x270 i386-defconfig mips-ocelot powerpc-mpc885_ads
arm-ep93xx i386-up mips-pb1100 powerpc-pasemi
arm-footbridge ia64 mips-pb1500 powerpc-pmac32
arm-fortunet ia64-allnoconfig mips-pb1550 powerpc-ppc64
arm-h3600 ia64-bigsur mips-pnx8550-jbs powerpc-prpmc2800
arm-h7201 ia64-defconfig mips-pnx8550-stb810 powerpc-ps3
arm-h7202 ia64-gensparse mips-qemu powerpc-pseries
arm-hackkit ia64-sim mips-rbhma4200 powerpc-up
arm-integrator ia64-sn2 mips-rbhma4500 s390
arm-iop13xx ia64-tiger mips-rm200 s390-allnoconfig
arm-iop32x ia64-up mips-sb1250-swarm s390-defconfig
arm-iop33x ia64-zx1 mips-sead s390-up
arm-ixp2000 m68k mips-tb0219 sparc
arm-ixp23xx m68k-amiga mips-tb0226 sparc-allnoconfig
arm-ixp4xx m68k-apollo mips-tb0287 sparc-defconfig
arm-jornada720 m68k-atari mips-workpad sparc-up
arm-kafa m68k-bvme6000 mips-wrppmc sparc64
arm-kb9202 m68k-hp300 mips-yosemite sparc64-allnoconfig
arm-ks8695 m68k-mac parisc sparc64-defconfig
arm-lart m68k-mvme147 parisc-allnoconfig sparc64-up
arm-lpd270 m68k-mvme16x parisc-defconfig um-x86_64
arm-lpd7a400 m68k-q40 parisc-up x86_64
arm-lpd7a404 m68k-sun3 powerpc x86_64-allnoconfig
arm-lubbock m68k-sun3x powerpc-cell x86_64-defconfig
arm-lusl7200 mips powerpc-celleb x86_64-up
arm-mainstone mips-atlas powerpc-chrp32Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds
27 Jul, 2007
5 commits
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If a machine check is pending and the external or I/O interrupt handler
returns to userspace io_mcck_pending is going to call s390_handle_mcck.
Before this happens a call to TRACE_IRQS_ON was already made since we
know that we are going back to userspace and hence interrupts will be
enabled. So there was an indication that interrupts are enabled while
in reality they are still disabled.
s390_handle_mcck will do a local_irq_save/restore pair and confuse
lockdep which later complains about inconsistent irq tracing.
To solve this just call trace_hardirqs_off before calling
s390_handle_mcck and trace_hardirqs_on afterwards.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
This patch implements support of fallocate system call on s390(x)
platform. A wrapper is added to address the issue which s390 ABI has with
the arguments of this system call.Signed-off-by: Martin Schwidefsky
-
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
There is no need to disable bottom halves when holding call_lock. Also
this could imply that it is legal to call smp_call_function* from
bh context, which it is not.
Also test if func will be executed locally before disabling
and aterwards enabling interrupts again. It's not necessary to disable
and enable interrupts each time __smp_call_function_map gets called.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
smp_call_function_single now has the same semantics as s390's
smp_call_function_on. Therefore convert to the *single variant
and get rid of some architecture specific code.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
20 Jul, 2007
3 commits
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This changes the s390 linker script to use the asm-generic NOTES macro so that
ELF note sections with SHF_ALLOC set are linked into the kernel image along
with other read-only data. The PT_NOTE also points to their location.This paves the way for putting useful build-time information into ELF notes
that can be found easily later in a kernel memory dump.Signed-off-by: Roland McGrath
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
per cpu data section contains two types of data. One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus. In the current kernel, these two sets are
not clearely separated out. This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end. Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.This patch:
Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.Signed-off-by: Fenghua Yu
Acked-by: Suresh Siddha
Cc: Rusty Russell
Cc: Christoph Lameter
Cc:
Cc: "Luck, Tony"
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch completes Linus's wish that the fault return codes be made into
bit flags, which I agree makes everything nicer. This requires requires
all handle_mm_fault callers to be modified (possibly the modifications
should go further and do things like fault accounting in handle_mm_fault --
however that would be for another patch).[akpm@linux-foundation.org: fix alpha build]
[akpm@linux-foundation.org: fix s390 build]
[akpm@linux-foundation.org: fix sparc build]
[akpm@linux-foundation.org: fix sparc64 build]
[akpm@linux-foundation.org: fix ia64 build]
Signed-off-by: Nick Piggin
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Ian Molton
Cc: Bryan Wu
Cc: Mikael Starvik
Cc: David Howells
Cc: Yoshinori Sato
Cc: "Luck, Tony"
Cc: Hirokazu Takata
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Greg Ungerer
Cc: Matthew Wilcox
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Richard Curnow
Cc: William Lee Irwin III
Cc: "David S. Miller"
Cc: Jeff Dike
Cc: Paolo 'Blaisorblade' Giarrusso
Cc: Miles Bader
Cc: Chris Zankel
Acked-by: Kyle McMartin
Acked-by: Haavard Skinnemoen
Acked-by: Ralf Baechle
Acked-by: Andi Kleen
Signed-off-by: Andrew Morton
[ Still apparently needs some ARM and PPC loving - Linus ]
Signed-off-by: Linus Torvalds
18 Jul, 2007
4 commits
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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] Fix broken logic, SIGA flags must be bitwise ORed
[S390] cio: Dont print trailing \0 in modalias_show().
[S390] Simplify stack trace.
[S390] z/VM unit record device driver
[S390] vmcp cleanup
[S390] qdio: output queue stall on FCP and network devices
[S390] Fix disassembly of RX_URRD, SI_URD & PC-relative instructions.
[S390] Update default configuration. -
Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata()
function.AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless
return EPERM.Signed-off-by: Alexey Dobriyan
Cc: Christoph Hellwig
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()
function.Signed-off-by: Alexey Dobriyan
Cc: Christoph Hellwig
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the kernel OOPSed or BUGed then it probably should be considered as
tainted. Thus, all subsequent OOPSes and SysRq dumps will report the
tainted kernel. This saves a lot of time explaining oddities in the
calltraces.Signed-off-by: Pavel Emelianov
Acked-by: Randy Dunlap
Cc:
Signed-off-by: Andrew Morton
[ Added parisc patch from Matthew Wilson -Linus ]
Signed-off-by: Linus Torvalds
17 Jul, 2007
2 commits
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sparse gives us a few of these:
stacktrace.c:69:38: warning: incorrect type in argument 2
(different signedness)
stacktrace.c:69:38: expected unsigned int *skipJust get rid of the 'skip' argument since it is contained in the
struct stack_trace that gets passed anyway.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
z/VM Unit record character device driver to access VM reader, punch,
and printer.Signed-off-by: Frank Munzert
Signed-off-by: Martin Schwidefsky
