Commit Graph

1901 Commits

Author SHA1 Message Date
Paul Mundt a246f581fc sh: wire up finit_module syscall.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2013-01-14 17:59:03 +09:00
Linus Torvalds 9977d9b379 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull big execve/kernel_thread/fork unification series from Al Viro:
 "All architectures are converted to new model.  Quite a bit of that
  stuff is actually shared with architecture trees; in such cases it's
  literally shared branch pulled by both, not a cherry-pick.

  A lot of ugliness and black magic is gone (-3KLoC total in this one):

   - kernel_thread()/kernel_execve()/sys_execve() redesign.

     We don't do syscalls from kernel anymore for either kernel_thread()
     or kernel_execve():

     kernel_thread() is essentially clone(2) with callback run before we
     return to userland, the callbacks either never return or do
     successful do_execve() before returning.

     kernel_execve() is a wrapper for do_execve() - it doesn't need to
     do transition to user mode anymore.

     As a result kernel_thread() and kernel_execve() are
     arch-independent now - they live in kernel/fork.c and fs/exec.c
     resp.  sys_execve() is also in fs/exec.c and it's completely
     architecture-independent.

   - daemonize() is gone, along with its parts in fs/*.c

   - struct pt_regs * is no longer passed to do_fork/copy_process/
     copy_thread/do_execve/search_binary_handler/->load_binary/do_coredump.

   - sys_fork()/sys_vfork()/sys_clone() unified; some architectures
     still need wrappers (ones with callee-saved registers not saved in
     pt_regs on syscall entry), but the main part of those suckers is in
     kernel/fork.c now."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (113 commits)
  do_coredump(): get rid of pt_regs argument
  print_fatal_signal(): get rid of pt_regs argument
  ptrace_signal(): get rid of unused arguments
  get rid of ptrace_signal_deliver() arguments
  new helper: signal_pt_regs()
  unify default ptrace_signal_deliver
  flagday: kill pt_regs argument of do_fork()
  death to idle_regs()
  don't pass regs to copy_process()
  flagday: don't pass regs to copy_thread()
  bfin: switch to generic vfork, get rid of pointless wrappers
  xtensa: switch to generic clone()
  openrisc: switch to use of generic fork and clone
  unicore32: switch to generic clone(2)
  score: switch to generic fork/vfork/clone
  c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone()
  take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h
  mn10300: switch to generic fork/vfork/clone
  h8300: switch to generic fork/vfork/clone
  tile: switch to generic clone()
  ...

Conflicts:
	arch/microblaze/include/asm/Kbuild
2012-12-12 12:22:13 -08:00
Linus Torvalds 414a6750e5 USB patches for 3.8-rc1
Here's the big set of USB patches for 3.8-rc1.
 
 Lots of USB host driver cleanups in here, and a bit of a reorg of the
 EHCI driver to make it easier for the different EHCI platform drivers to
 all work together nicer, which was a reduction in overall code.  We also
 deleted some unused firmware files, and got rid of the very old
 file_storage usb gadget driver that had been broken for a long time.
 This means we ended up removing way more code than added, always a nice
 thing to see:
 	 310 files changed, 3028 insertions(+), 10754 deletions(-)
 
 Other than that, the usual set of new device ids, driver fixes, gadget
 driver and controller updates and the like.
 
 All of these have been in the linux-next tree for a number of weeks.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg Kroah-Hartman:
 "Here's the big set of USB patches for 3.8-rc1.

  Lots of USB host driver cleanups in here, and a bit of a reorg of the
  EHCI driver to make it easier for the different EHCI platform drivers
  to all work together nicer, which was a reduction in overall code.  We
  also deleted some unused firmware files, and got rid of the very old
  file_storage usb gadget driver that had been broken for a long time.
  This means we ended up removing way more code than added, always a
  nice thing to see:
	 310 files changed, 3028 insertions(+), 10754 deletions(-)

  Other than that, the usual set of new device ids, driver fixes, gadget
  driver and controller updates and the like.

  All of these have been in the linux-next tree for a number of weeks.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'usb-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (228 commits)
  USB: mark uas driver as BROKEN
  xhci: Add Lynx Point LP to list of Intel switchable hosts
  uwb: fix uwb_dev_unlock() missed at an error path in uwb_rc_cmd_async()
  USB: ftdi_sio: Add support for Newport AGILIS motor drivers
  MAINTAINERS: remove drivers/block/ub.c
  USB: chipidea: fix use after free bug
  ezusb: add dependency to USB
  usb: ftdi_sio: fixup BeagleBone A5+ quirk
  USB: cp210x: add Virtenio Preon32 device id
  usb: storage: remove redundant memset() in usb_probe_stor1()
  USB: option: blacklist network interface on Huawei E173
  USB: OHCI: workaround for hardware bug: retired TDs not added to the Done Queue
  USB: add new zte 3g-dongle's pid to option.c
  USB: opticon: switch to generic read implementation
  USB: opticon: refactor reab-urb processing
  USB: opticon: use usb-serial bulk-in urb
  USB: opticon: increase bulk-in size
  USB: opticon: use port as urb context
  USB: opticon: pass port to get_serial_info
  USB: opticon: make private data port specific
  ...
2012-12-11 14:48:20 -08:00
Al Viro afa86fc426 flagday: don't pass regs to copy_thread()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28 23:43:42 -05:00
Al Viro 0ad9513d0f sh: switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28 22:36:47 -05:00
Al Viro f4091322d7 Merge branches 'no-rebases', 'arch-avr32', 'arch-blackfin', 'arch-cris', 'arch-h8300', 'arch-m32r', 'arch-mn10300', 'arch-score', 'arch-sh' and 'arch-powerpc' into for-next 2012-11-28 21:52:07 -05:00
Al Viro 9dc87c7b5b sh64: fix altstack switching on sigreturn
incidentally, declaring a local variable as __user (!) to make
sparse STFU is really sick.  Especially since sparse had been
100% right - it *is* a bug.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28 21:46:11 -05:00
Al Viro 80b249b71e sh: convert to generic sys_execve()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-22 22:31:12 -04:00
Al Viro 7147e21548 sh: switch to generic kernel_thread()/kernel_execve()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-22 22:31:01 -04:00
Florian Fainelli 7518f0763e sh: convert boards to use the OHCI platform driver
This patch makes all SuperH boards using the ohci-sh platform driver to use
the ohci-platform driver instead, which is suitable for use by these boards.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-22 11:26:54 -07:00
Paul Mundt cf7599322a sh: Wire up kcmp syscall.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-10-15 13:54:29 +09:00
Jeff Layton 91a27b2a75 vfs: define struct filename and have getname() return it
getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.

For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.

This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.

Later, we'll add other information to the struct as it becomes
convenient.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-12 20:14:55 -04:00
Linus Torvalds 8213a2f3ee Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull pile 2 of execve and kernel_thread unification work from Al Viro:
 "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for
  several more architectures plus assorted signal fixes and cleanups.

  There'll be more (in particular, real fixes for the alpha
  do_notify_resume() irq mess)..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)
  alpha: don't open-code trace_report_syscall_{enter,exit}
  Uninclude linux/freezer.h
  m32r: trim masks
  avr32: trim masks
  tile: don't bother with SIGTRAP in setup_frame
  microblaze: don't bother with SIGTRAP in setup_rt_frame()
  mn10300: don't bother with SIGTRAP in setup_frame()
  frv: no need to raise SIGTRAP in setup_frame()
  x86: get rid of duplicate code in case of CONFIG_VM86
  unicore32: remove pointless test
  h8300: trim _TIF_WORK_MASK
  parisc: decide whether to go to slow path (tracesys) based on thread flags
  parisc: don't bother looping in do_signal()
  parisc: fix double restarts
  bury the rest of TIF_IRET
  sanitize tsk_is_polling()
  bury _TIF_RESTORE_SIGMASK
  unicore32: unobfuscate _TIF_WORK_MASK
  mips: NOTIFY_RESUME is not needed in TIF masks
  mips: merge the identical "return from syscall" per-ABI code
  ...

Conflicts:
	arch/arm/include/asm/thread_info.h
2012-10-12 10:49:08 +09:00
Andi Kleen 666e81fdca sections: fix section conflicts in arch/sh
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-06 03:04:40 +09:00
Richard Weinberger 3cffdc8c3a Uninclude linux/freezer.h
This include is no longer needed.
(seems to be a leftover from try_to_freeze())

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01 09:58:18 -04:00
Al Viro 5e071e2b4b sh: Fix up TIF_NOTIFY_RESUME sans TIF_SIGPENDING handling.
As Al notes, we missed a TIF_NOTIFY_RESUME check which caused any
handlers without TIF_SIGPENDING also set to skip the notification:

	Looks like while it is in the relevant masks *and* checked in
	do_notify_resume() both on 32bit and 64bit variants since commit
	ab99c733ae ("sh: Make syscall tracer
	use tracehook notifiers, add TIF_NOTIFY_RESUME.") they are
	actually *not* reached without simulataneous SIGPENDING, since
	the actual glue in the callers had not been updated back then and
	still checks for _TIF_SIGPENDING alone when deciding whether to
	hit do_notify_resume() or not.

Reported-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-09-18 17:04:37 +09:00
Phil Edworthy d0b464d670 sh: sh7269: Fix LCD pinmux
There are two ports that can output the LCD data, therefore
they have to use separate pimux identifiers so we can select
the one we want to use.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-08-09 13:16:55 +09:00
Linus Torvalds 587a9e1f95 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Make sys_atomic_cmpxchg_32 work on classic m68k
  m68k/apollo: Rename "timer" to "apollo_timer"
  zorro: Remove unused zorro_bus.devices
  m68k: Remove never used asm/shm.h
  m68k/sun3: Remove unselectable code in prom_init()
  m68k: Use asm-generic version of <asm/sections.h>
  m68k: Replace m68k-specific _[se]bss by generic __bss_{start,stop}
  mtd/uclinux: Use generic __bss_stop instead of _ebss
  m68knommu: Allow ColdFire CPUs to use unaligned accesses
  m68k: Remove five unused headers
  m68k: CPU32 does not support unaligned accesses
  m68k: Introduce config option CPU_HAS_NO_UNALIGNED
  m68k: delay, muldi3 - Use CONFIG_CPU_HAS_NO_MULDIV64
  m68k: Move CPU_HAS_* config options
  m68k: Remove duplicate FPU config option
  m68knommu: Clean up printing of sections
  m68k: Use asm-generic version of <asm/types.h>
  m68k: Use Kbuild logic to import asm-generic headers
2012-08-03 10:52:41 -07:00
Guennadi Liakhovetski 08298f0612 sh: explicitly include sh_dma.h in setup-sh7722.c
setup-sh7722.c defines several objects, whose types are defined in
sh_dma.h, so, it has to be included explicitly.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-08-02 15:37:26 +09:00
Kuninori Morimoto 8a87776dee sh: sh7724: fixup renesas_usbhs clock settings
8cc88a55b0
(sh: sh7724: use runtime PM implementation) broke sh7724 clocks.

renesas_usbhs needs HWBLK_USB0/1 clock on sh7724

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-08-01 17:14:40 +09:00
Shimoda, Yoshihiro b9ccfda293 sh: modify the sh_dmae_slave_config for RSPI in setup-sh7757
Modify the sh7757_dmae1_slave to add paramters of RSPI's slave_id.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-07-26 14:16:09 +09:00
Linus Torvalds c511dc1fb6 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine update from Vinod Koul:
 "This time we have a new dmaengine driver from the tegra folks.  Also
  we have Guennadi's cleanup of sh drivers which incudes a library for
  sh drivers.  And the usual odd fixes in bunch of drivers and some nice
  cleanup of dw_dmac from Andy."

Fix up conflicts in drivers/mmc/host/sh_mmcif.c

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits)
  dmaengine: Cleanup logging messages
  mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
  dma: sh: provide a migration path for slave drivers to stop using .private
  dma: sh: use an integer slave ID to improve API compatibility
  dmaengine: shdma: prepare to stop using struct dma_chan::private
  sh: remove unused DMA device pointer from SIU platform data
  ASoC: siu: don't use DMA device for channel filtering
  dmaengine: shdma: (cosmetic) simplify a static function
  dmaengine: at_hdmac: add a few const qualifiers
  dw_dmac: use 'u32' for LLI structure members, not dma_addr_t
  dw_dmac: mark dwc_dump_lli inline
  dma: mxs-dma: Export missing symbols from mxs-dma.c
  dma: shdma: convert to the shdma base library
  ASoC: fsi: prepare for conversion to the shdma base library
  usb: renesas_usbhs: prepare for conversion to the shdma base library
  ASoC: siu: prepare for conversion to the shdma base library
  serial: sh-sci: prepare for conversion to the shdma base library
  mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
  mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
  dma: shdma: prepare for conversion to the shdma base library
  ...
2012-07-24 17:12:54 -07:00
Linus Torvalds 47b170af84 SuperH updates for 3.6-rc1 merge window
- Migration off of old-style dynamic IRQ API.
 
 - irqdomain and generic irq chip propagation.
 
 - div4/6 clock consolidation, another step towards co-existing
   with the common struct clk infrastructure.
 
 - Extensive PFC rework
   - Decoupling GPIO from pin state.
   - Initial pinctrl support to facilitate incremental migration
     off of legacy pinmux.
   - gpiolib support made optional, and made pinctrl-backed.
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Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh

Pull SuperH updates from Paul Mundt:

 - Migration off of old-style dynamic IRQ API.

 - irqdomain and generic irq chip propagation.

 - div4/6 clock consolidation, another step towards co-existing with the
   common struct clk infrastructure.

 - Extensive PFC rework
   - Decoupling GPIO from pin state.
   - Initial pinctrl support to facilitate incremental migration off of
     legacy pinmux.
   - gpiolib support made optional, and made pinctrl-backed.

* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (38 commits)
  sh: pfc: pin config get/set support.
  sh: pfc: Prefer DRV_NAME over KBUILD_MODNAME.
  sh: pfc: pinctrl legacy group support.
  sh: pfc: Ignore pinmux GPIOs with invalid enum IDs.
  sh: pfc: Export pinctrl binding init symbol.
  sh: pfc: Error out on pinctrl init resolution failure.
  sh: pfc: Make pr_fmt consistent across pfc drivers.
  sh: pfc: pinctrl legacy function support.
  sh: pfc: Rudimentary pinctrl-backed GPIO support.
  sh: pfc: Dumb GPIO stringification.
  sh: pfc: Shuffle PFC support core.
  sh: pfc: Verify pin type encoding size at build time.
  sh: pfc: Kill off unused pinmux bias flags.
  sh: pfc: Make gpio chip support optional where possible.
  sh: pfc: Split out gpio chip support.
  sh64: Fix up section mismatch warnings.
  sh64: Attempt to make reserved insn trap handler resemble C.
  sh: Consolidate die definitions for trap handlers.
  sh64: Kill off old exception debugging helpers.
  sh64: Use generic unaligned access control/counters.
  ...
2012-07-23 19:05:53 -07:00
Paul Mundt 9ff561fdf7 Merge branch 'common/pinctrl' into sh-latest 2012-07-20 16:42:59 +09:00
Guennadi Liakhovetski 1e7f07b539 sh: remove unused DMA device pointer from SIU platform data
The SIU ALSA driver is not using the DMA device pointer for DMA channel
filtering any more, it can be now removed.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-20 11:23:44 +05:30
Paul Mundt 64941d8930 sh: Fix up se7721 GPIOLIB=y build warnings.
Presently the SH7720/21 serial code uses asm/gpio.h to get at the CPU
GPIO port definitions, but in the case of GPIOLIB=y this also includes
references to generic GPIOLIB routines that we don't have any function
declarations for, tripping up on -Werror=implicit-function-declaration
with newer gcc versions:

  CC      arch/sh/kernel/cpu/sh3/serial-sh7720.o
In file included from include/linux/sh_pfc.h:14:0,
                 from arch/sh/include/asm/gpio.h:23,
                 from arch/sh/kernel/cpu/sh3/serial-sh7720.c:5:
include/asm-generic/gpio.h: In function 'gpio_get_value_cansleep':
include/asm-generic/gpio.h:220:2: error: implicit declaration of function '__gpio_get_value' [-Werror=implicit-function-declaration]
include/asm-generic/gpio.h: In function 'gpio_set_value_cansleep':
include/asm-generic/gpio.h:226:2: error: implicit declaration of function '__gpio_set_value' [-Werror=implicit-function-declaration]
In file included from arch/sh/include/asm/gpio.h:23:0,
                 from arch/sh/kernel/cpu/sh3/serial-sh7720.c:5:
include/linux/sh_pfc.h: At top level:
include/linux/sh_pfc.h:121:19: error: field 'chip' has incomplete type

Switch to using the cpu/ version for the port definitions explicitly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-07-02 15:06:22 +09:00
Nobuhiro Iwamatsu ad3337cb38 sh: Convert sh_clk_mstp32_register to sh_clk_mstp_register
sh_clk_mstp32_register is deprecated. This convert to sh_clk_mstp_register.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-28 16:45:34 +09:00
Geert Uytterhoeven 363737d664 mtd/uclinux: Use generic __bss_stop instead of _ebss
The standard (see BSS_SECTION() in <asm-generic/vmlinux.lds.h> and
<asm-generic/sections.h>) symbol for the end of BSS is __bss_stop.
This allows to remove all local declarations that have been added to
several architectures just to please CONFIG_MTD_UCLINUX.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2012-06-27 09:59:43 +02:00
Paul Mundt 0375a73c6f sh64: Attempt to make reserved insn trap handler resemble C.
This has been long overdue. No functional changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-14 14:46:36 +09:00
Paul Mundt 5f857bce21 sh: Consolidate die definitions for trap handlers.
This kills off the _64 versions and consolidates on the more robust _32
versions instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-14 14:18:51 +09:00
Paul Mundt 37c9ee0161 sh64: Kill off old exception debugging helpers.
There's not much here that we can't get at through alternate means (aside
from the TLB contents, but that doesn't belong here anyways). Most of
this information is already provided by the sh32 routines, which we'll
consolidate on next.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-14 14:12:18 +09:00
Paul Mundt db218b3d55 sh64: Use generic unaligned access control/counters.
This switches over from the special-casing that sh64 had and to the model
that's being employed for sh32.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-14 14:05:24 +09:00
Paul Mundt af68d8f06d Merge branch 'sh/genirq' into sh-latest 2012-06-13 12:12:52 +09:00
Paul Mundt f21efd4536 Merge branch 'sh/multi-unwinders' into sh-latest 2012-06-13 12:12:14 +09:00
Paul Mundt 380622e9ff Merge branches 'sh/urgent', 'sh/core', 'sh/clockevents', 'sh/asm-generic' and 'sh/trivial' into sh-fixes-for-linus 2012-06-13 12:01:33 +09:00
Paul Mundt cba8df4be3 sh: use the new generic strnlen_user() function
This discards both the _32 and _64 versions in favour of the consolidated
generic one.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-13 10:28:37 +09:00
Paul Mundt 0e100e11bd sh: switch to generic strncpy_from_user().
This kills off the special sh32/64 versions and adopts the generic
version. It should be possible to optimize this for SH-4A unaligned
loads, but this is a corner case that can be supported incrementally.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-13 10:28:16 +09:00
Al Viro efee984c27 new helper: signal_delivered()
Does block_sigmask() + tracehook_signal_handler();  called when
sigframe has been successfully built.  All architectures converted
to it; block_sigmask() itself is gone now (merged into this one).

I'm still not too happy with the signature, but that's a separate
story (IMO we need a structure that would contain signal number +
siginfo + k_sigaction, so that get_signal_to_deliver() would fill one,
signal_delivered(), handle_signal() and probably setup...frame() -
take one).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:52 -04:00
Al Viro 77097ae503 most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set
Only 3 out of 63 do not.  Renamed the current variant to __set_current_blocked(),
added set_current_blocked() that will exclude unblockable signals, switched
open-coded instances to it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:51 -04:00
Al Viro a610d6e672 pull clearing RESTORE_SIGMASK into block_sigmask()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:49 -04:00
Al Viro 5754f412a3 sh64: failure to build sigframe != signal without handler
it's actually "send me SIGSEGV"...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:49 -04:00
Al Viro b7f9a11a6c new helper: sigmask_to_save()
replace boilerplate "should we use ->saved_sigmask or ->blocked?"
with calls of obvious inlined helper...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:48 -04:00
Al Viro 51a7b448d4 new helper: restore_saved_sigmask()
first fruits of ..._restore_sigmask() helpers: now we can take
boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK
and restore the blocked mask from ->saved_mask" into a common
helper.  Open-coded instances switched...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:47 -04:00
Linus Torvalds fb21affa49 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull second pile of signal handling patches from Al Viro:
 "This one is just task_work_add() series + remaining prereqs for it.

  There probably will be another pull request from that tree this
  cycle - at least for helpers, to get them out of the way for per-arch
  fixes remaining in the tree."

Fix trivial conflict in kernel/irq/manage.c: the merge of Andrew's pile
had brought in commit 97fd75b7b8 ("kernel/irq/manage.c: use the
pr_foo() infrastructure to prefix printks") which changed one of the
pr_err() calls that this merge moves around.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  keys: kill task_struct->replacement_session_keyring
  keys: kill the dummy key_replace_session_keyring()
  keys: change keyctl_session_to_parent() to use task_work_add()
  genirq: reimplement exit_irq_thread() hook via task_work_add()
  task_work_add: generic process-context callbacks
  avr32: missed _TIF_NOTIFY_RESUME on one of do_notify_resume callers
  parisc: need to check NOTIFY_RESUME when exiting from syscall
  move key_repace_session_keyring() into tracehook_notify_resume()
  TIF_NOTIFY_RESUME is defined on all targets now
2012-05-31 18:47:30 -07:00
Anton Vorontsov 1198c8b9af sh: use clear_tasks_mm_cpumask()
Checking for process->mm is not enough because process' main thread may
exit or detach its mm via use_mm(), but other threads may still have a
valid mm.

To fix this we would need to use find_lock_task_mm(), which would walk up
all threads and returns an appropriate task (with task lock held).

clear_tasks_mm_cpumask() has the issue fixed, so let's use it.

Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-31 17:49:30 -07:00
Paul Mundt 3a9485da96 sh64: Fix up fallout from generic init_task conversion.
In the generic init_task migration sh64 silently lost its
fake_swapper_regs definition, resulting in link errors.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-24 15:07:47 +09:00
Paul Mundt 4945326499 sh64: Convert to unwinder API.
This switches over to use the sh unwinder API which brings it all in line
with the general sh routines (which we shuffle around at the same time),
and lets us kill off more sh64-specific cruft.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-24 15:03:46 +09:00
Paul Mundt 76b3866245 sh: Kill off now unused arch_probe_nr_irqs().
Now that legacy pre-allocation is done away with, we can just use the
generic stub in kernel/softirq.c.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-24 13:59:35 +09:00
Paul Mundt 936c163ab2 sh: arch/sh/kernel/process.c needs asm/fpu.h for unlazy_fpu().
Linus tried to fix up sh fallout from the x86 fpu state cleanup merge and
failed. Add the missing include to get it building again.

  CC      arch/sh/kernel/process.o
arch/sh/kernel/process.c: In function 'arch_dup_task_struct':
arch/sh/kernel/process.c:23:2: error: implicit declaration of function 'unlazy_fpu'

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-24 13:03:20 +09:00
Al Viro a42c6ded82 move key_repace_session_keyring() into tracehook_notify_resume()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-23 22:09:20 -04:00