02 Mar, 2010
1 commit
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...Fix up trivial conflict in arch/arm/mach-mx25/clock.c
01 Mar, 2010
1 commit
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…el/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits)
ftrace: Add function names to dangling } in function graph tracer
tracing: Simplify memory recycle of trace_define_field
tracing: Remove unnecessary variable in print_graph_return
tracing: Fix typo of info text in trace_kprobe.c
tracing: Fix typo in prof_sysexit_enable()
tracing: Remove CONFIG_TRACE_POWER from kernel config
tracing: Fix ftrace_event_call alignment for use with gcc 4.5
ftrace: Remove memory barriers from NMI code when not needed
tracing/kprobes: Add short documentation for HAVE_REGS_AND_STACK_ACCESS_API
s390: Add pt_regs register and stack access API
tracing/kprobes: Make Kconfig dependencies generic
tracing: Unify arch_syscall_addr() implementations
tracing: Add notrace to TRACE_EVENT implementation functions
ftrace: Allow to remove a single function from function graph filter
tracing: Add correct/incorrect to sort keys for branch annotation output
tracing: Simplify test for function_graph tracing start point
tracing: Drop the tr check from the graph tracing path
tracing: Add stack dump to trace_printk if stacktrace option is set
tracing: Use appropriate perl constructs in recordmcount.pl
tracing: optimize recordmcount.pl for offsets-handling
...
28 Feb, 2010
1 commit
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (35 commits)
[S390] time: remove unused code
[S390] zcore: Add prefix registers to dump header
[S390] correct vdso version string
[S390] add support for compressed kernels
[S390] Define new s390 ELF note sections in elf.h
[S390] codepage conversion of kernel parameter line
[S390] seq_file: convert drivers/s390/
[S390] add z9-ec/z10 instruction to kernel disassembler
[S390] dasd: correct offline processing
[S390] dasd: fix refcounting.
[S390] dasd: fix online/offline race
[S390] use kprobes_built_in() in mm/fault code
[S390] bug: use relative pointers in bug table entries
[S390] Cleanup struct _lowcore usage and defines.
[S390] free_initmem: reduce code duplication
[S390] Replace ENOTSUPP usage with EOPNOTSUPP
[S390] spinlock: check virtual cpu running status
[S390] sysinfo: fix SYSIB 3,2,2 structure
[S390] add MACHINE_IS_LPAR flag
[S390] qdio: optimize cache line usage of struct qdio_irq
...
27 Feb, 2010
24 commits
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…deric/random-tracing into tracing/core
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (31 commits)
crypto: aes_generic - Fix checkpatch errors
crypto: fcrypt - Fix checkpatch errors
crypto: ecb - Fix checkpatch errors
crypto: des_generic - Fix checkpatch errors
crypto: deflate - Fix checkpatch errors
crypto: crypto_null - Fix checkpatch errors
crypto: cipher - Fix checkpatch errors
crypto: crc32 - Fix checkpatch errors
crypto: compress - Fix checkpatch errors
crypto: cast6 - Fix checkpatch errors
crypto: cast5 - Fix checkpatch errors
crypto: camellia - Fix checkpatch errors
crypto: authenc - Fix checkpatch errors
crypto: api - Fix checkpatch errors
crypto: anubis - Fix checkpatch errors
crypto: algapi - Fix checkpatch errors
crypto: blowfish - Fix checkpatch errors
crypto: aead - Fix checkpatch errors
crypto: ablkcipher - Fix checkpatch errors
crypto: pcrypt - call the complete function on error
... -
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
The glibc vdso code for s390 uses the version string 2.6.29, the
kernel uses the version string 2.6.26. No wonder the vdso code
is never used. The first kernel version to contain the vdso code
is 2.6.29 which makes this the correct version.Signed-off-by: Martin Schwidefsky
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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
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Move the ebcdic to ascii conversion of the kernel parameter line from
head.S to early.c and convert the assembler code to C.Signed-off-by: Martin Schwidefsky
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Add the instruction of the z9-ec and z10 machines to the kernel disassembler.
Add the missing "ptff" instruction of z9-109 and the missing "sqd" of g5.
Remove useless comments with instruction examples from format table.Signed-off-by: Martin Schwidefsky
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Use kprobes_built_in() to avoid ifdefs like most other architectures do.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Reduces the size of the bug table entries by 50% on 64bit kernels.
Saves around 30kb on a defconfig kernel.
s390 version of b93a531e "allow bug table entries to use relative
pointers (and use it on x86-64)".Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Use asm offsets to make sure the offset defines to struct _lowcore and
its layout don't get out of sync.
Also add a BUILD_BUG_ON() which checks that the size of the structure
is sane.
And while being at it change those sites which use odd casts to access
the current lowcore. These should use S390_lowcore instead.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
free_initmem() and free_initrd_mem() are nearly identical. So make them
call a common function.
Also fixes a bug: if the initrd wouldn't start on a page boundary also
memory after the initrd would be initialized with the poison value.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
ENOTSUPP is not supposed to leak to userspace so lets just use
EOPNOTSUPP everywhere.
Doesn't fix a bug, but makes future reviews easier.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
This patch introduces a new function that checks the running status
of a cpu in a hypervisor. This status is not virtualized, so the check
is only correct if running in an LPAR. On acquiring a spinlock, if the
cpu holding the lock is scheduled by the hypervisor, we do a busy wait
on the lock. If it is not scheduled, we yield over to that cpu.Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky -
The size of the field that contains the description block count is
only four bits instead of eight bits.
The first four bits are reserved but this might change and break.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Introduce the MACHINE_IS_LPAR flag for code that should only be
executed if Linux is running in an LPAR.Signed-off-by: Martin Schwidefsky
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Remove a memset hack that relied on the internal layout of the
qdio_irq struct and move the per device statistics data into an own
cache line to avoid cache line bashing between the inbound and the
outbound queue tasklets. Also reduce the number of allocated queues
from 32 to 4 which is the current maximum. That saves a cache line
in struct qdio_irq.Signed-off-by: Jan Glauber
Signed-off-by: Martin Schwidefsky -
Rename signal_processor* functions to sigp*.
Add raw variants of each version, so we can get rid of the hacks played
in smp code which establish temporary cpu logical mappings so they could
call the sigp functions.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
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
Signed-off-by: Martin Schwidefsky -
Rename __LC_RESTART_PSW to __LC_RST_NEW_PSW, add a define for the
missing 32 bit variant and the missing old PSWs.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Remove support to be able to dump 31 bit systems with a 64 bit dumper.
This is mostly useless since no distro ships 31 bit kernels together
with a 64 bit dumper.
We also get rid of a bit of hacky code.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Drop support to compile the kernel with gcc versions older than 3.3.3.
This allows us to use the "Q" inline assembly contraint on some more
inline assemblies without duplicating a lot of complex code (e.g. __xchg
and __cmpxchg). The distinction for older gcc versions can be removed
which saves a few lines and simplifies the code.Reviewed-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Some parts of cio do not shift PAGE_DEFAULT_KEY correctly and end up
with an incorrect key in their data structures.
Since the default key is zero this doesn't really matter. However if
somebody would use key-controlled protection for debugging purposes
it would be quite helpful if all of this would work as expected.Also remove a stale declaration.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
To fetch a pending channel report word (crw) we use a kernel
thread which triggers stcrw and sleeps on a semaphore. The s390
machine check handler uses crw_handle_channel_report to handle
one crw if needed.This patch replaces the semaphore with a waitqueue (to block the
kernel thread) and an atomic_t (to count the number of pending
requests).By this we achieve the ability to force this thread to check for
a pending crw (independent on when it is triggered by the machine
check handler) and wait for this action to finish.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Same as on x86 and sparc, besides the fact that enabling the option
will just emit compile time warnings instead of errors.
Keeps allyesconfig kernels compiling.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
21 Feb, 2010
1 commit
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On VIVT ARM, when we have multiple shared mappings of the same file
in the same MM, we need to ensure that we have coherency across all
copies. We do this via make_coherent() by making the pages
uncacheable.This used to work fine, until we allowed highmem with highpte - we
now have a page table which is mapped as required, and is not available
for modification via update_mmu_cache().Ralf Beache suggested getting rid of the PTE value passed to
update_mmu_cache():On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
to construct a pointer to the pte again. Passing a pte_t * is much
more elegant. Maybe we might even replace the pte argument with the
pte_t?Ben Herrenschmidt would also like the pte pointer for PowerPC:
Passing the ptep in there is exactly what I want. I want that
-instead- of the PTE value, because I have issue on some ppc cases,
for I$/D$ coherency, where set_pte_at() may decide to mask out the
_PAGE_EXEC.So, pass in the mapped page table pointer into update_mmu_cache(), and
remove the PTE value, updating all implementations and call sites to
suit.Includes a fix from Stephen Rothwell:
sparc: fix fallout from update_mmu_cache API change
Signed-off-by: Stephen Rothwell
Acked-by: Benjamin Herrenschmidt
Signed-off-by: Russell King
17 Feb, 2010
2 commits
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This API is needed for the kprobe-based event tracer.
Signed-off-by: Heiko Carstens
Reviewed-by: Masami Hiramatsu
Cc: Martin Schwidefsky
LKML-Reference:
Signed-off-by: Frederic Weisbecker -
Most implementations of arch_syscall_addr() are the same, so create a
default version in common code and move the one piece that differs (the
syscall table) to asm/syscall.h. New arch ports don't have to waste
time copying & pasting this simple function.The s390/sparc versions need to be different, so document why.
Signed-off-by: Mike Frysinger
Acked-by: David S. Miller
Acked-by: Paul Mundt
Acked-by: Heiko Carstens
Cc: Steven Rostedt
LKML-Reference:
Signed-off-by: Frederic Weisbecker
09 Feb, 2010
1 commit
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Offsets and sizes are wrong for 32 bit.
Got broken with 866ba284 "[S390] cleanup lowcore.h".Reported-by: Mahesh Salgaonkar
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
27 Jan, 2010
3 commits
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If irq flags tracing is enabled the TRACE_IRQS_ON macros expands to
a function call which clobbers registers %r0-%r5. The macro is used
in the code path for single stepped system calls. The argument
registers %r2-%r6 need to be restored from the stack before the system
call function is called.Cc: stable@kernel.org
Signed-off-by: Martin Schwidefsky -
Use set_current_state instead of a direct assignment to set the
task state of the current process.Signed-off-by: Martin Schwidefsky
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Add missing types.h include. Otherwise would cause build breakages on
hw breakpoint support, because of undefined BITS_PER_LONG.
Also fix up the copyright line and remove the superfluous __KERNEL__
ifdef.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
25 Jan, 2010
1 commit
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kvm_handle_sie_intercept uses a jump table to get the intercept handler
for a SIE intercept. Static code analysis revealed a potential problem:
the intercept_funcs jump table was defined to contain (0x48 >> 2) entries,
but we only checked for code > 0x48 which would cause an off-by-one
array overflow if code == 0x48.Use the compiler and ARRAY_SIZE to automatically set the limits.
Cc: stable@kernel.org
Signed-off-by: Christian Borntraeger
Signed-off-by: Marcelo Tosatti
14 Jan, 2010
5 commits
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sys_recvmmsg is reachable via sys_socketcall. So unwire it again since
there is no point in having two entry points for it.
Also put it to the ignore list so we don't get reminded anymore in order
to wire it up.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
This one will trap, generates shorter code and emits better debug data
than the generic version.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Finally move it to the place where it belongs to and make get rid of
it for !CONFIG_SMP.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Remove pointless qualifier.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky