linux.git/arch/sh/kernel/process_32.c, branch v2.6.32

sh: Use internal watchdog timer to perform reset

2009-08-24T07:20:44+00:00

This patches will trigger a reboot using the watchdog
timer instead of double fault.  Unlike the previous
method, this one actually works in 32 bit mode.

Reset should also be cleaner.

Signed-off-by: Jon Frosdick 
Signed-off-by: Carl Shaw 
Signed-off-by: Paul Mundt

sh: Mark __switch_to() as __notrace_funcgraph

2009-07-11T01:08:06+00:00

Annotate __switch_to() so that the function graph tracer does not try to
trace it. Use __notrace_funcgraph, as opposed to notrace, so that other
tracers can continue to trace __switch_to().

The reason that we don't want to trace __switch_to() with the function
graph tracer is because of how the return address stack in task_struct
is implemented. When we enter __switch_to we store the real return
address on prev's ret_stack. When we return from __switch_to() we've
patched the return address on the kernel stack to be
return_to_handler. Calling return_to_handler we do,

       -> ftrace_return_to_handler()
       	  -> ftrace_pop_return_ftrace()

Which tries to pop the real return address from current->ret_stack. The
problem being that we stored the return address on prev->ret_stack, but
current now points to next, and next->ret_stack doesn't contain the
correct return address (and is possibly even empty).

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

2009-06-18T21:07:35+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (56 commits)
  sh: Fix declaration of __kernel_sigreturn and __kernel_rt_sigreturn
  sh: Enable soc-camera in ap325rxa/migor/se7724 defconfigs.
  sh: remove stray markers.
  sh: defconfig updates.
  sh: pci: Initial PCI-Express support for SH7786 Urquell board.
  sh: Generic HAVE_PERF_COUNTER support.
  SH: convert migor to soc-camera as platform-device
  SH: convert ap325rxa to soc-camera as platform-device
  soc-camera: unify i2c camera device platform data
  sh: add platform data for r8a66597-hcd in setup-sh7723
  sh: add platform data for r8a66597-hcd in setup-sh7366
  sh: x3proto: add platform data for r8a66597-hcd
  sh: highlander: add platform data for r8a66597-hcd
  sh: sh7785lcr: add platform data for r8a66597-hcd
  sh: turn off irqs when disabling CMT/TMU timers
  sh: use kzalloc() for cpg clocks
  sh: unbreak WARN_ON()
  sh: Use generic atomic64_t implementation.
  sh: Revised clock function in highlander
  sh: Update r7780mp defconfig
  ...

ptrace: remove PT_DTRACE from avr32, mn10300, parisc, s390, sh, xtensa

2009-06-18T20:03:48+00:00

avr32, mn10300, parisc, s390, sh, xtensa:

They never set PT_DTRACE, but clear it after do_execve().

Signed-off-by: Oleg Nesterov 
Cc: David Howells 
Acked-by: Kyle McMartin 
Cc: Grant Grundler 
Cc: Matthew Wilcox 
Acked-by: Martin Schwidefsky 
Cc: Heiko Carstens 
Acked-by: Paul Mundt 
Acked-by: Chris Zankel 
Acked-by: Roland McGrath 
Acked-by: Haavard Skinnemoen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: remove stray markers.

2009-06-18T04:38:26+00:00

arch/sh has a couple of stray markers without any users introduced
in commit 3d58695edbfac785161bf282dc11fd42a483d6c9.  Remove them in
preparation of removing the markers in favour of the TRACE_EVENT
macro (and also because we don't keep dead code around).

Signed-off-by: Christoph Hellwig 
Signed-off-by: Paul Mundt

sh: Fix UBC setup and registers for SH2A

2009-05-08T15:09:21+00:00

Signed-off-by: Kieran Bingham 
Signed-off-by: Peter Griffin 
Signed-off-by: Paul Mundt

Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

2009-04-05T18:15:54+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
  sh: sh7785lcr: Map whole PCI address space.
  sh: Fix up DSP context save/restore.
  sh: Fix up number of on-chip DMA channels on SH7091.
  sh: update defconfigs.
  sh: Kill off broken direct-mapped cache mode.
  sh: Wire up ARCH_HAS_DEFAULT_IDLE for cpuidle.
  sh: Add a command line option for disabling I/O trapping.
  sh: Select ARCH_HIBERNATION_POSSIBLE.
  sh: migor: Fix up CEU use flags.
  input: migor_ts: add wakeup support
  rtc: rtc-sh: use set_irq_wake()
  input: sh_keysc: use enable/disable_irq_wake()
  sh: intc: set_irq_wake() support
  sh: intc: install enable, disable and shutdown callbacks
  clocksource: sh_cmt: use remove_irq() and remove clockevent workaround
  sh: ap325 and Migo-R use new sh_mobile_ceu_info flags
  sh: Fix up -Wformat-security whining.
  sh: ap325rxa: Add ov772x support, again.
  sh: Sanitize asm/mmu.h for assembly use.
  sh: Tidy up sh7786 pinmux table.
  ...

sh: Fix up DSP context save/restore.

2009-04-04T15:48:11+00:00

There were a number of issues with the DSP context save/restore code,
mostly left-over relics from when it was introduced on SH3-DSP with
little follow-up testing, resulting in things like task_pt_dspregs()
referencing incorrect state on the stack.

This follows the MIPS convention of tracking the DSP state in the
thread_struct and handling the state save/restore in switch_to() and
finish_arch_switch() respectively. The regset interface is also updated,
which allows us to finally be rid of task_pt_dspregs() and the special
cased task_pt_regs().

Signed-off-by: Michael Trimarchi 
Signed-off-by: Paul Mundt

Simplify copy_thread()

2009-04-03T02:04:51+00:00

First argument unused since 2.3.11.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alexey Dobriyan 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: Simplify kernel_thread_helper() for sh32.

2008-12-22T09:44:44+00:00

This can use the same implementation as sh64, the generated assembly is
the same between the new and old version, so there is not much point in
leaving it open coded in inline assembly.

This is preparatory work for future consolidation of the _32/_64
variants.

Signed-off-by: Paul Mundt