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2007-07-20mm: Remove slab destructors from kmem_cache_create().Paul Mundt
Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-19define new percpu interface for shared dataFenghua Yu
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 <fenghua.yu@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Christoph Lameter <clameter@sgi.com> Cc: <linux-arch@vger.kernel.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19mm: fault feedback #2Nick Piggin
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 <npiggin@suse.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Still apparently needs some ARM and PPC loving - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17PTRACE_POKEDATA consolidationAlexey Dobriyan
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 <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17PTRACE_PEEKDATA consolidationAlexey Dobriyan
Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata() function. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Report that kernel is tainted if there was an OOPSPavel Emelianov
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 <xemul@openvz.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Added parisc patch from Matthew Wilson -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (68 commits) sh: sh-rtc support for SH7709. sh: Revert __xdiv64_32 size change. sh: Update r7785rp defconfig. sh: Export div symbols for GCC 4.2 and ST GCC. sh: fix race in parallel out-of-tree build sh: Kill off dead mach.c for hp6xx. sh: hd64461.h cleanup and added comments. sh: Update the alignment when 4K stacks are used. sh: Add a .bss.page_aligned section for 4K stacks. sh: Don't let SH-4A clobber SH-4 CFLAGS. sh: Add parport stub for SuperIO ports. sh: Drop -Wa,-dsp for DSP tuning. sh: Update dreamcast defconfig. fb: pvr2fb: A few more __devinit annotations for PCI. fb: pvr2fb: Fix up section mismatch warnings. sh: Select IPR-IRQ for SH7091. sh: Correct __xdiv64_32/div64_32 return value size. sh: Fix timer-tmu build for SH-3. sh: Add cpu and mach links to CLEAN_FILES. sh: Preliminary support for the SH-X3 CPU. ...
2007-07-16generic bug: use show_regs() instead of dump_stack()Heiko Carstens
The current generic bug implementation has a call to dump_stack() in case a WARN_ON(whatever) gets hit. Since report_bug(), which calls dump_stack(), gets called from an exception handler we can do better: just pass the pt_regs structure to report_bug() and pass it to show_regs() in case of a warning. This will give more debug informations like register contents, etc... In addition this avoids some pointless lines that dump_stack() emits, since it includes a stack backtrace of the exception handler which is of no interest in case of a warning. E.g. on s390 the following lines are currently always present in a stack backtrace if dump_stack() gets called from report_bug(): [<000000000001517a>] show_trace+0x92/0xe8) [<0000000000015270>] show_stack+0xa0/0xd0 [<00000000000152ce>] dump_stack+0x2e/0x3c [<0000000000195450>] report_bug+0x98/0xf8 [<0000000000016cc8>] illegal_op+0x1fc/0x21c [<00000000000227d6>] sysc_return+0x0/0x10 Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andi Kleen <ak@suse.de> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16sh: sh-rtc support for SH7709.Kristoffer Ericson
Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-13sh: Revert __xdiv64_32 size change.Paul Mundt
It's only __div64_32 that needs the fix, __xdiv64_32 behaves as expected with the original size. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-13sh: Update r7785rp defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-13sh: Export div symbols for GCC 4.2 and ST GCC.Paul Mundt
GCC 4.2 can emit integer variants of the FP division routines, so these need to be exported in order to keep the modules happy. 4.1.x versions of the ST compiler have these things backported, and so also generate these symbols (whereas vanilla gcc 4.1.x does not), so handle the __GNUC_STM_RELEASE__ case to accomodate updated versions of the 4.1.x toolchain. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-12sh: fix race in parallel out-of-tree buildErik Johansson
Depending on which of the three dependencies for archprepare (in arch/sh/Makefile) get built first, the directory include/asm-sh may or may not exist when the maketools target is built. If the directory does not exist, awk will fail to generate machtypes.h. This patch fixes this by creating the directory before awk is executed. Signed-off-by: Erik Johansson <erik.johansson@motorola.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-12sh: Kill off dead mach.c for hp6xx.Kristoffer Ericson
Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-12sh: Update the alignment when 4K stacks are used.Robert P. J. Day
Use the newly added .bss.page_aligned section for aligning the stacks rather than THREAD_SIZE. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-12sh: Add a .bss.page_aligned section for 4K stacks.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-12sh: Don't let SH-4A clobber SH-4 CFLAGS.Paul Mundt
Older compilers don't support the -m4a{,nofpu} flags, which has the side-effect of allowing FP operations to be emitted. Switch this to incremental tuning, so we at least have -m4-nofpu as a fallback for the gcc3 toolchains. Without this, certain modules emit references to __udivsi3_i4 and __sdivsi3_i4. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-07sh: Drop -Wa,-dsp for DSP tuning.Paul Mundt
We already hand off the proper ISA variant with the dsp specifier appended, so we don't need to explicitly set -dsp. This causes some confusion with certain toolchains that are restricted to -dsp family opcodes artificially. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-07sh: Update dreamcast defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-07sh: Select IPR-IRQ for SH7091.Paul Mundt
Fixes a compile failure for the Dreamcast. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-06sh: Correct __xdiv64_32/div64_32 return value size.Paul Mundt
These should be returning a uint32_t, whereas they were erroneously returning a u64 before. As the register sizes are 32-bits, this doesn't really make a lot of sense. Reported-by: Katsuya MATSUBARA <matsu@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-06sh: Add cpu and mach links to CLEAN_FILES.Paul Mundt
These weren't being cleaned up, so add them to the CLEAN_FILES. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-20Merge branch 'x3'Paul Mundt
2007-06-20sh: Preliminary support for the SH-X3 CPU.Paul Mundt
This adds basic support for UP SH-X3. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-20sh: Hook up hard_smp_processor_id() for INTC2 block.Paul Mundt
We need to know the CPU ID in order to calculate the mask and ack registers effectively. Stub this in for UP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-20sh: Update se7722 defconfig.Paul Mundt
Hook up the multi-node stuff for the SE7722. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-20sh: Fix up cf-enabler dependency for SE boards.Paul Mundt
This was using CONFIG_SH_SOLUTION_ENGINE, where we really wanted CONFIG_SOLUTION_ENGINE. While we're at it, move the whole CF enabler mess somewhere better suited. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-19sh: Handle -ERESTART_RESTARTBLOCK for restartable syscalls.Paul Mundt
The current implementation only handles -ERESTARTNOHAND, whereas we also need to handle -ERESTART_RESTARTBLOCK in the handle_signal() case for restartable system calls. As noted by Carl: This fixes the LTP test nanosleep03 - the current kernel causes -ERESTART_RESTARTBLOCK to reach user space rather than the correct -EINTR. Reported-by: Carl Shaw <shaw.carl@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-18sh: Check oops_may_print() in unhandled fault.Paul Mundt
Only print out pgd/pte data in the oops path if oops_may_print() holds true. Follows the i386 implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-18sh: oops_enter()/oops_exit() in die().Paul Mundt
As Russell helpfully pointed out on linux-arch: http://marc.info/?l=linux-arch&m=118208089204630&w=2 We were missing the oops_enter/exit() in the sh die() implementation. As we do support lockdep, it's beneficial to add these calls so lockdep properly disables itself in the die() case. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-18sh: Fix restartable syscall arg5 clobbering.Kaz Kojima
We use R0 as the 5th argument of syscall. When the syscall restarts after signal handling, we should restore the old value of R0. The attached patch does it. Without this patch, I've experienced random failures in the situation which signals are issued frequently. Signed-off-by: Kaz Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-15sh: Update SH-2/SH-2A defconfigs.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-15sh: rework ipr codeMagnus Damm
This patch reworks the ipr code by grouping the offset array together with the ipr_data structure in a new data structure called ipr_desc. This new structure also contains the name of the controller in struct irq_chip. The idea behind putting struct irq_chip in there is that we can use offsetof() to locate the base addresses in the irq_chip callbacks. This strategy has much in common with the recently merged intc2 code. One logic change has been made - the original ipr code enabled the interrupts by default but with this patch they are all disabled by default. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-15sh: Only support PMB for SH-X cores.Paul Mundt
We don't have a PMB for SH-X2 or later, so only enable it for the few CPUs that support it. Fixes up the boot for SH4AL-DSP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-15sh: rework intc2 codeMagnus Damm
The shared intc2 code currently contains cpu-specific #ifdefs. This is a tad unclean and it prevents us from using the shared code to drive board-specific irqs on the se7780 board. This patch reworks the intc2 code by moving the base addresses of the intc2 registers into struct intc2_desc. This new structure also contains the name of the controller in struct irq_chip. The idea behind putting struct irq_chip in there is that we can use offsetof() to locate the base addresses in the irq_chip callbacks. One logic change has been made - the original shared intc2 code enabled the interrupts by default but with this patch they are all disabled by default. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Fix up the math-emu build.Paul Mundt
math-emu wasn't converted for the trap_no/errno_code changes, get it building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Kill off broken dma page ops.Paul Mundt
There's no point in keeping these around, they've been broken for some time, and the dmaenging/async_tx framework provides a far more reasonable interface. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Fixup misaligned data for sh2 lockdep.Paul Mundt
lockdep/irqflags tracing on SH-2 ends up with a misaligned branch, fix it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Tidy up dependencies for SH-2 build.Paul Mundt
SH-2 can presently get in to some pretty bogus states, so we tidy up the dependencies a bit and get it all building again. This gets us a bit closer to a functional allyesconfig and allmodconfig, though there are still a few things to fix up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Provide a defconfig for R7780MP.Yoshihiro Shimoda
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Kill off dead SH7604 support.Paul Mundt
This was added during 2.5.x, but was never moved along. This can easily be resurrected if someone has one they wish to work with, but it's not worth keeping around in its current form. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: memory hot-add for sparsemem users support.Paul Mundt
This enables simple hotplug support for sparsemem users. Presently this only permits memory being added in to node 0 on ZONE_NORMAL. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Fix up cpu to node mapping in sysfs.Paul Mundt
Currently cpu_to_node() is always 0 in the UP case, though we do want to have the CPU association linked in under sysfs even in the cases where we're only on a single CPU. Fix this up, so we have the cpu0 link on all of the available nodes that don't already have a CPU link of their own. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Fix the SH7722 flatmem build.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Make NUMA depend on sparsemem.Paul Mundt
The only platforms that are supporting NUMA are doing so via sparsemem, so update the dependency. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: URAM node support for SH7722.Paul Mundt
This adds the URAM block on SH7722 as a separate node. Sparsemem is required for this, or it can simply be disabled by explicitly selecting a flatmem model. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Support for multiple nodes.Paul Mundt
This adds basic support for multiple nodes on SH machines. This is primarily useful for boards with many different memory blocks that are otherwise unused (SH7722/SH7785 URAM and so forth). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Use asm/sections.h for linker section symbols.Paul Mundt
Kill off a bunch of externs, and use sections.h instead.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Fix up max_zone_pfns[] with multiple nodes.Paul Mundt
Currently using multiple nodes tramples the ZONE_NORMAL max low pfn, tidy up the logic a bit to get it all working as expected. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Wire up mempolicy syscalls.Paul Mundt
Wire up mbind and get/set_mempolicy() in their reserved places. Signed-off-by: Paul Mundt <lethal@linux-sh.org>