1. 17 5月, 2010 4 次提交
  2. 25 4月, 2010 1 次提交
    • A
      KVM: PPC: Add helpers to call FPU instructions · 963cf3dc
      Alexander Graf 提交于
      To emulate paired single instructions, we need to be able to call FPU
      operations from within the kernel. Since we don't want gcc to spill
      arbitrary FPU code everywhere, we tell it to use a soft fpu.
      
      Since we know we can really call the FPU in safe areas, let's also add
      some calls that we can later use to actually execute real world FPU
      operations on the host's FPU.
      Signed-off-by: NAlexander Graf <agraf@suse.de>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      963cf3dc
  3. 03 4月, 2010 1 次提交
    • F
      perf: Always build the powerpc perf_arch_fetch_caller_regs version · 6e03bb5a
      Frederic Weisbecker 提交于
      Now that software events use perf_arch_fetch_caller_regs() too, we
      need the powerpc version to be always built.
      
      Fixes the following build error:
      
      	(.text+0x3210): undefined reference to `perf_arch_fetch_caller_regs'
      	(.text+0x3324): undefined reference to `perf_arch_fetch_caller_regs'
      	(.text+0x33bc): undefined reference to `perf_arch_fetch_caller_regs'
      	(.text+0x33ec): undefined reference to `perf_arch_fetch_caller_regs'
      	(.text+0xd4a0): undefined reference to `perf_arch_fetch_caller_regs'
      	arch/powerpc/kernel/built-in.o:(.text+0xd528): more undefined references to `perf_arch_fetch_caller_regs' follow
      	make[1]: *** [.tmp_vmlinux1] Error 1
      	make: *** [sub-make] Error 2
      Reported-by: NMichael Ellerman <michael@ellerman.id.au>
      Reported-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      6e03bb5a
  4. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  5. 19 3月, 2010 3 次提交
  6. 18 3月, 2010 1 次提交
    • P
      powerpc/perf_events: Fix call-graph recording, add perf_arch_fetch_caller_regs · 9eff26ea
      Paul Mackerras 提交于
      This implements a powerpc version of perf_arch_fetch_caller_regs
      to get correct call-graphs.
      
      It's implemented in assembly because that way we can be sure there isn't
      a stack frame for perf_arch_fetch_caller_regs.  If it was in C, gcc might
      or might not create a stack frame for it, which would affect the number
      of levels we have to skip.
      
      With this, we see results from perf record -e lock:lock_acquire like
      this:
      
       # Samples: 24878
       #
       # Overhead         Command      Shared Object  Symbol
       # ........  ..............  .................  ......
       #
          14.99%            perf  [kernel.kallsyms]  [k] ._raw_spin_lock
                            |
                            --- ._raw_spin_lock
                               |
                               |--25.00%-- .alloc_fd
                               |          (nil)
                               |          |
                               |          |--50.00%-- .anon_inode_getfd
                               |          |          .sys_perf_event_open
                               |          |          syscall_exit
                               |          |          syscall
                               |          |          create_counter
                               |          |          __cmd_record
                               |          |          run_builtin
                               |          |          main
                               |          |          0xfd2e704
                               |          |          0xfd2e8c0
                               |          |          (nil)
      
      ... etc.
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: anton@samba.org
      Cc: linuxppc-dev@ozlabs.org
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      LKML-Reference: <20100318050513.GA6575@drongo>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      9eff26ea
  7. 17 3月, 2010 1 次提交
  8. 13 3月, 2010 4 次提交
    • F
      dma-mapping: powerpc: use generic pci_set_dma_mask and pci_set_consistent_dma_mask · 6e6c70e6
      FUJITA Tomonori 提交于
      This converts powerpc to use the generic pci_set_dma_mask and
      pci_set_consistent_dma_mask (drivers/pci/pci.c).
      
      The generic pci_set_dma_mask does what powerpc's pci_set_dma_mask does.
      
      Unlike powerpc's pci_set_consistent_dma_mask, the gneric
      pci_set_consistent_dma_mask sets only coherent_dma_mask.  It doesn't work
      for powerpc?  pci_set_consistent_dma_mask API should set only
      coherent_dma_mask?
      Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
      Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
      Cc: Greg KH <greg@kroah.com>
      Cc: Kay Sievers <kay.sievers@vrfy.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      6e6c70e6
    • C
      Add generic sys_olduname() · 5cacdb4a
      Christoph Hellwig 提交于
      Add generic implementations of the old and really old uname system calls.
      Note that sh only implements sys_olduname but not sys_oldolduname, but I'm
      not going to bother with another ifdef for that special case.
      
      m32r implemented an old uname but never wired it up, so kill it, too.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      5cacdb4a
    • C
      improve sys_newuname() for compat architectures · e28cbf22
      Christoph Hellwig 提交于
      On an architecture that supports 32-bit compat we need to override the
      reported machine in uname with the 32-bit value.  Instead of doing this
      separately in every architecture introduce a COMPAT_UTS_MACHINE define in
      <asm/compat.h> and apply it directly in sys_newuname().
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e28cbf22
    • C
      Add generic sys_ipc wrapper · baed7fc9
      Christoph Hellwig 提交于
      Add a generic implementation of the ipc demultiplexer syscall.  Except for
      s390 and sparc64 all implementations of the sys_ipc are nearly identical.
      
      There are slight differences in the types of the parameters, where mips
      and powerpc as the only 64-bit architectures with sys_ipc use unsigned
      long for the "third" argument as it gets casted to a pointer later, while
      it traditionally is an "int" like most other paramters.  frv goes even
      further and uses unsigned long for all parameters execept for "ptr" which
      is a pointer type everywhere.  The change from int to unsigned long for
      "third" and back to "int" for the others on frv should be fine due to the
      in-register calling conventions for syscalls (we already had a similar
      issue with the generic sys_ptrace), but I'd prefer to have the arch
      maintainers looks over this in details.
      
      Except for that h8300, m68k and m68knommu lack an impplementation of the
      semtimedop sub call which this patch adds, and various architectures have
      gets used - at least on i386 it seems superflous as the compat code on
      x86-64 and ia64 doesn't even bother to implement it.
      
      [akpm@linux-foundation.org: add sys_ipc to sys_ni.c]
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Reviewed-by: NH. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Acked-by: NJesper Nilsson <jesper.nilsson@axis.com>
      Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Acked-by: NDavid Howells <dhowells@redhat.com>
      Acked-by: NKyle McMartin <kyle@mcmartin.ca>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      baed7fc9
  9. 11 3月, 2010 1 次提交
    • P
      perf, ppc: Fix compile error due to new cpu notifiers · 85cfabbc
      Peter Zijlstra 提交于
      Fix:
      
        arch/powerpc/kernel/perf_event.c:1334: error: 'power_pmu_notifier' undeclared (first use in this function)
        arch/powerpc/kernel/perf_event.c:1334: error: (Each undeclared identifier is reported only once
        arch/powerpc/kernel/perf_event.c:1334: error: for each function it appears in.)
        arch/powerpc/kernel/perf_event.c:1334: error: implicit declaration of function 'power_pmu_notifier'
        arch/powerpc/kernel/perf_event.c:1334: error: implicit declaration of function 'register_cpu_notifier'
      
      Due to commit 3f6da390 (perf: Rework and fix the arch CPU-hotplug hooks).
      Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
      LKML-Reference: <new-submission>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      85cfabbc
  10. 10 3月, 2010 2 次提交
  11. 09 3月, 2010 4 次提交
  12. 08 3月, 2010 1 次提交
  13. 05 3月, 2010 2 次提交
  14. 01 3月, 2010 4 次提交
    • A
      KVM: PPC: Keep SRR1 flags around in shadow_msr · f7adbba1
      Alexander Graf 提交于
      SRR1 stores more information that just the MSR value. It also stores
      valuable information about the type of interrupt we received, for
      example whether the storage interrupt we just got was because of a
      missing htab entry or not.
      
      We use that information to speed up the exit path.
      
      Now if we get preempted before we can interpret the shadow_msr values,
      we get into vcpu_put which then calls the MSR handler, which then sets
      all the SRR1 information bits in shadow_msr to 0. Great.
      
      So let's preserve the SRR1 specific bits in shadow_msr whenever we set
      the MSR. They don't hurt.
      Signed-off-by: NAlexander Graf <agraf@suse.de>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      f7adbba1
    • A
      KVM: PPC: Export __giveup_vsx · fbad5f1d
      Alexander Graf 提交于
      We need to explicitly only giveup VSX in KVM, so let's export that
      specific function to module space.
      Signed-off-by: NAlexander Graf <agraf@suse.de>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      fbad5f1d
    • A
      KVM: PPC: Call SLB patching code in interrupt safe manner · 021ec9c6
      Alexander Graf 提交于
      Currently we're racy when doing the transition from IR=1 to IR=0, from
      the module memory entry code to the real mode SLB switching code.
      
      To work around that I took a look at the RTAS entry code which is faced
      with a similar problem and did the same thing:
      
        A small helper in linear mapped memory that does mtmsr with IR=0 and
        then RFIs info the actual handler.
      
      Thanks to that trick we can safely take page faults in the entry code
      and only need to be really wary of what to do as of the SLB switching
      part.
      Signed-off-by: NAlexander Graf <agraf@suse.de>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      021ec9c6
    • A
      KVM: PPC: Use PACA backed shadow vcpu · 7e57cba0
      Alexander Graf 提交于
      We're being horribly racy right now. All the entry and exit code hijacks
      random fields from the PACA that could easily be used by different code in
      case we get interrupted, for example by a #MC or even page fault.
      
      After discussing this with Ben, we figured it's best to reserve some more
      space in the PACA and just shove off some vcpu state to there.
      
      That way we can drastically improve the readability of the code, make it
      less racy and less complex.
      Signed-off-by: NAlexander Graf <agraf@suse.de>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      7e57cba0
  15. 26 2月, 2010 1 次提交
  16. 24 2月, 2010 1 次提交
  17. 23 2月, 2010 2 次提交
  18. 19 2月, 2010 3 次提交
  19. 18 2月, 2010 1 次提交
  20. 17 2月, 2010 2 次提交
    • D
      powerpc/booke: Add support for advanced debug registers · 3bffb652
      Dave Kleikamp 提交于
      powerpc/booke: Add support for advanced debug registers
      
      From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
      
      Based on patches originally written by Torez Smith.
      
      This patch defines context switch and trap related functionality
      for BookE specific Debug Registers. It adds support to ptrace()
      for setting and getting BookE related Debug Registers
      Signed-off-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com>
      Cc: Torez Smith  <lnxtorez@linux.vnet.ibm.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: David Gibson <dwg@au1.ibm.com>
      Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Sergio Durigan Junior <sergiodj@br.ibm.com>
      Cc: Thiago Jung Bauermann <bauerman@br.ibm.com>
      Cc: linuxppc-dev list <Linuxppc-dev@ozlabs.org>
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3bffb652
    • D
      powerpc: Extended ptrace interface · 3162d92d
      Dave Kleikamp 提交于
      powerpc: Extended ptrace interface
      
      From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
      
      Based on patches originally written by Torez Smith.
      
      Add a new extended ptrace interface so that user-space has a single
      interface for powerpc, without having to know the specific layout
      of the debug registers.
      
      Implement:
      PPC_PTRACE_GETHWDEBUGINFO
      PPC_PTRACE_SETHWDEBUG
      PPC_PTRACE_DELHWDEBUG
      Signed-off-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com>
      Acked-by: NDavid Gibson <dwg@au1.ibm.com>
      Cc: Torez Smith  <lnxtorez@linux.vnet.ibm.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Sergio Durigan Junior <sergiodj@br.ibm.com>
      Cc: Thiago Jung Bauermann <bauerman@br.ibm.com>
      Cc: linuxppc-dev list <Linuxppc-dev@ozlabs.org>
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3162d92d