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2008-12-04sparc,sparc64: prepare vmlinux.lds.S for unificationSam Ravnborg
This patch makes the two vmlinux.lds.S files identical and serve as documentation for the changes in each file. This mainly add stuffs to sparc32 that is otherwise only used by sparc64 and thus it should have no effect. Build tested only. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Provide oprofile pseudo-NMI on Niagara.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Add performance counter hypervisor calls for sun4v.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Add save_stack_trace_tsk().David S. Miller
And this allows us to indicate HAVE_LATENCYTOP_SUPPORT. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc32: pdev_to_pnode() is used from __devinitAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc32: Don't btfixup cache flush ops for viking multiple times.David S. Miller
Just do it once. Pointed out by Al Viro. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: combine unistd_{32,64}.hStephen Rothwell
This is complicated a little because compat_audit.c wants to see only the 32bit syscall numbers, but is being built in a 64bit compile. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Use NMI oprofile profiling on cheetah and derivative cpus.David S. Miller
We use clock cycle counter, adjusted to HZ. This can be extended to sun4v based processors as well, as they also have a proper overflow interrupt facility for the performance counters. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Add write_pic() helper.David S. Miller
It writes the %pic register, keeping mind of processor bugs. Implement reset_pic() in terms of it. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Block NMIs in critical section of context switch.David S. Miller
In these instructions we load the new thread register, switch the register window, and setup the new frame pointer. All of these must appear atomic, and things will explode if we take a PIL=15 NMI interrupt in the middle of this sequence. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Make special trap return path for TRAP_NMI().David S. Miller
We don't want the rtrap path to try and run softirqs or anything like that when returning from a PIL==15 NMI. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Make %pil level 15 a pseudo-NMI.David S. Miller
So that we can profile code even in a local_irq_disable() section, only write 14 (instead of 15) into the %pil register to disable IRQs. This allows PIL level 15 to serve as a pseudo NMI. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: Include drivers/pcmcia/KconfigDavid S. Miller
Stephen Rothwell pointed out that pcmcia can't be enabled on sparc64. There is an empty non-prompt PCMCIA explicit entry in arch/sparc/Kconfig but that doesn't do anything. 32-bit sparc needs a small hack to make this work, since it doesn't use the generic IRQ layer yes. We have to provide a dummy definition of probe_irq_mask(), since this is used by the yenta socket driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Add interface for registering a performance counter IRQ handler.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Add tsb-ratio sysctl.David S. Miller
Add a sysctl to tweak the RSS limit used to decide when to grow the TSB for an address space. In order to avoid expensive divides and multiplies only simply positive and negative powers of two are supported. The function computed takes the number of TSB translations that will fit at one time in the TSB of a given size, and either adds or subtracts a percentage of entries. This final value is the RSS limit. See tsb_size_to_rss_limit(). Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc,sparc64: unify mm/Sam Ravnborg
- move all sparc64/mm/ files to arch/sparc/mm/ - commonly named files are named _64.c - add files to sparc/mm/Makefile preserving link order - delete now unused sparc64/mm/Makefile - sparc64 now finds mm/ in sparc Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: prepare mm/ for unificationSam Ravnborg
- rename files where sparc64 has similar files to _32.c - Restructure Makefile - Sneak in -Werror as we have for sparc64 Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: unify arch/sparc64/oprofile/Sam Ravnborg
A simple: diff arch/sparc64/oprofile/init.c arch/sparc/oprofile/init.c diff arch/sparc64/oprofile/Makefile arch/sparc/oprofile/Makefile revealed that the directories were equal. So let sparc64 point to the sparc version and drop the sparc64 oprofile dir Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: unify math-emuSam Ravnborg
Move relavent files to sparc/math-emu and adjust path/include accordingly. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: prepare math-emu for unificationSam Ravnborg
Add _32 to filenames to make them 32 bit unique Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: cleanup math-emuSam Ravnborg
- Drop unused assignment from Makefile - Replace EXTRA_CFLAGS with ccflags-y - Delete unused file Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc,sparc64: add BITS to arch MakefileSam Ravnborg
BITS will be used to simplify unified Makefiles Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc,sparc64: unify Kconfig filesSam Ravnborg
Merge all of sparc64 Kconfig to sparc Kconfig. The merge was checked by: - visual inspection in menuconfig - result of allnoconfig, allmodconfig, allyesconfig was checked before and after - result of a number of randconfig was checked before and after scripts/diffconfig was used to check if the config differed before and after The validity of the test was checked by on purpose introducing a few bugs - and they were all caught by first run. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: add "Bus options" to KconfigSam Ravnborg
To align with sparc64 add a "Bus options" menu This has the additiona advantage that all bus options are kept together Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: add menu "Executable file formats"Sam Ravnborg
This is what we use in sparc64 - make sparc equal Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: use Kconfig.hzSam Ravnborg
We already has the proper definition in place in param.h. So use the common Kconfig.hz file Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: drop UNIX98_PTYS from arch KconfigSam Ravnborg
We have it in drivers/char/Kconfig There is no need to ask twice Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: added more config options to the menusSam Ravnborg
moved a few config entries inside a menu so we do not clutter the first screen up with a lot of detailed config options. The structure now remotely resemble the structure for i386 Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: refactor Kconfig a littleSam Ravnborg
Mode declaration of SPARC up in the top to match the structure of sparc64 Kconfig Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc: unify Kconfig.debugSam Ravnborg
Let sparc and sparc64 use the same Kconfig.debug Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Stop using memory barriers for atomics and locks.David S. Miller
The kernel always executes in the TSO memory model now, so none of this stuff is necessary any more. With helpful feedback from Nick Piggin. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Run the kernel always in the TSO memory model.David S. Miller
The fact of the matter is, all UltraSPARC-III and later chips only implement TSO. They don't implement PSO and RMO memory models at all. Only the Ultra-I and Ultra-II family chips implement RMO and they are only helped marginally by using this setting when executing kernel code. The big plus to doing this is that we can eliminate all of the non-Sync memory barriers in the kernel except for the ones used in the optimized memcpy/memset code (these use block load and store operations which have their own memory ordering rules). Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04sparc64: Rework auxio driver to save some text space.David S. Miller
Use common functions instead of inlining and duplicating logic over and over to handle the SBUS vs. EBUS cases. Before: text data bss dec hex filename 715 568 16 1299 513 arch/sparc64/kernel/auxio.o After: text data bss dec hex filename 631 568 16 1215 4bf arch/sparc64/kernel/auxio.o Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
2008-12-04sparc64: Sync FPU state in VIS emulation handler.Hong H. Pham
Copy the FPU state to the task's thread_info->fpregs for the VIS emulation functions to access. Signed-off-by: Hong H. Pham <hong.pham@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03sparc64: Fix VIS emulation bugsJoseph Myers
This patch fixes some bugs in VIS emulation that cause the GCC test failure FAIL: gcc.target/sparc/pdist-3.c execution test for both 32-bit and 64-bit testing on hardware lacking these instructions. The emulation code for the pdist instruction uses RS1(insn) for both source registers rs1 and rs2, which is obviously wrong and leads to the instruction doing nothing (the observed problem), and further inspection of the code shows that RS1 uses a shift of 24 and RD a shift of 25, which clearly cannot both be right; examining SPARC documentation indicates the correct shift for RS1 is 14. This patch fixes the bug if single-stepping over the affected instruction in the debugger, but not if the testcase is run standalone. For that, Wind River has another patch I hope they will send as a followup to this patch submission. Signed-off-by: Joseph Myers <joseph@codesourcery.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03sparc: asm/bitops.h should define __flsRusty Russell
bitops_64.h includes the generic one; pretty sure 32 should too. (Found by using __fls in generic code and breaking sparc defconfig build: thanks Stephen and linux-next!) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03powerpc/83xx: Fix MCU support merge issue in mpc8349emitx.dtsAnton Vorontsov
Just found the merge issue in 442746989d92afc125040e0f29b33602ad94da99 ("powerpc/83xx: Add support for MCU microcontroller in .dts files"): the commit adds the MCU controller node into the DMA node, which is wrong because the MCU sits on the I2C bus. Fix this by moving the MCU node into the I2C controller node. The original patch[1] was OK though. ;-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03sparc64: Fix bug in PTRACE_SETFPREGS64 handling.Chris Torek
From: Chris Torek <chris.torek@windriver.com> >The SPARC64 kernel code for PTRACE_SETFPREGS64 appears to be an exact copy >of that for PTRACE_GETFPREGS64. This means that gdbserver and native >64-bit GDB cannot set floating-point registers. It looks like a simple typo. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03powerpc: Fix dma_map_sg() cache flushing on non coherent platformsBenjamin Herrenschmidt
On PowerPC 4xx or other non cache-coherent platforms, we lost the appropriate cache flushing in dma_map_sg() when merging the 32 and 64-bit DMA code (commit 4fc665b88a79a45bae8bbf3a05563c27c7337c3d, "powerpc: Merge 32 and 64-bit dma code"). This restores it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-02Merge branch 'kvm-updates/2.6.28' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: MMU: avoid creation of unreachable pages in the shadow KVM: ppc: stop leaking host memory on VM exit KVM: MMU: fix sync of ptes addressed at owner pagetable KVM: ia64: Fix: Use correct calling convention for PAL_VPS_RESUME_HANDLER KVM: ia64: Fix incorrect kbuild CFLAGS override KVM: VMX: Fix interrupt loss during race with NMI KVM: s390: Fix problem state handling in guest sigp handler
2008-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix offset calculation in compute_size() rtc: rtc-starfire fixes
2008-12-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Update defconfigs for 2.6.28-rc7 macfb: Do not overflow fb_fix_screeninfo.id
2008-12-02MN10300: Fix application of kernel module relocationsMark Salter
This fixes the MN10300 kernel module linking to match the toolchain. RELA relocs don't use the value at the location being relocated. This has been working because the tools always leave the value at the target location cleared. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-02powerpc: Use physical cpu id when setting the processor affinityKumar Gala
In the CONFIG_SMP case the irq_choose_cpu() code was returning back a logical cpu id not the physical id. We were writing that directly into the HW register. We need to be calling get_hard_smp_processor_id() so irq_choose_cpu() always returns a physical cpu id. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-02m68k: Update defconfigs for 2.6.28-rc7Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2008-12-01frv: fix mmap2 error handlingDavid Howells
Fix the error handling in sys_mmap2(). Currently, if the pgoff check fails, fput() might have to be called (which it isn't), so do the pgoff check first, before fget() is called. Signed-off-by: David Howells <dhowells@redhat.com> Reported-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01spi: fix spi_s3c24xx_gpio num_chipselectBen Dooks
The spi master driver must have num_chipselect set to allow the bus to initialise. Pass this through the platform data. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Fix build for 32-bit SMP configs
2008-12-01Revert "of_platform_driver noise on sparce"Linus Torvalds
This reverts commit e669dae6141ff97d3c7566207f5de3b487dcf837, since it is incomplete, and clashes with fuller patches and the sparc 32/64 unification effort. Requested-by: David Miller <davem@davemloft.net> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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