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: NAl Viro <viro@zeniv.linux.org.uk>

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: NOleg Nesterov <oleg@redhat.com>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

At present reserving the IRLs in the IRQ bitmap in addition to the
dropping of the legacy IRQ pre-allocation prevent IRL IRQs from being
allocated for the x3proto board.

The only reason to permit reservations was to lock down possible hardware
vectors prior to dynamic IRQ scanning, but this doesn't matter much given
that the hardware controller configuration is sorted before we get around
to doing any dynamic IRQ allocation anyways. Beyond that, all of the
tables are __init annotated, so quite a bit more work would need to be
done to support reconfiguring things like IRL controllers on the fly,
much more than would ever make it worth the hassle.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Complete the move of sh64 to it, trim the crap from prototypes,
tidy up a bit.  Infrastructure in do_signal() had already been
there, in signal_64 as well as in signal_32 (where it was already
used).
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

guts of saved_sigmask-based sigsuspend/rt_sigsuspend.  Takes
kernel sigset_t *.

Open-coded instances replaced with calling it.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Everything is using sparseirq these days, so we have no need to
arbitrarily size nr_irqs ahead of time. The legacy IRQ pre-allocation
likewise has no meaning for us, so that's killed off too. We now depend
on nr_irqs expansion by the generic hardirq layer instead.

It's also worth noting that the majority of boards had completely bogus
values for their nr_irqs relative to their CPU and configurations, so
this ends up correcting behaviour for quite a few platforms.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7720 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7710/SH7712 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH770x to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7705 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7760 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7750 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH4-202 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH-X3 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7785 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7780 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7770 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7763 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7757 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7724 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7723 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7722 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7366 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Migrate SH7343 to evt2irq() backed hwirq lookups.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This migrates SH7786 to evt2irq() backed hwirq lookup rather than
using an open-coded calculation. This will make it possible to reposition
the vector base at a later point in time.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The current code was going to initialize irq of plat_sci_port.
Not irq, irqs is right.
Signed-off-by: NNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Historical prepare_to_copy() is mostly a no-op, duplicated for majority of
the architectures and the rest following the x86 model of flushing the extended
register state like fpu there.

Remove it and use the arch_dup_task_struct() instead.
Suggested-by: NOleg Nesterov <oleg@redhat.com>
Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1336692811-30576-1-git-send-email-suresh.b.siddha@intel.comAcked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>

This brings the sh64 version in line with the sh32 one with regards to
how errors are handled. Base work for further unification of the
implementations.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This plugs in fault code encoding for the sh64 page fault, too.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This provides a simple interface modelled after sparc64/m32r to encode
the error code in the upper byte of thread_info for finer-grained
handling in the page fault path.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The build complains about a /* nested within a comment block, so just
tidy up the formatting.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPhil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This is an sh2a device (max 266MHz) with FPU, video display
controller (VDC), 8 serial ports, 4 I2C channels, 3 CAN ports,
SD and on-chip USB.
Signed-off-by: NPhil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPhil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This is an sh2a device with FPU, video display controller (VDC),
8 serial ports, 3 I2C channels, 2 CAN ports, SD and on-chip USB.
Signed-off-by: NPhil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The core now has a threadinfo allocator which uses a kmemcache when
THREAD_SIZE < PAGE_SIZE.

Deal with the xstate cleanup in the new arch_release_task_struct()
function.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Link: http://lkml.kernel.org/r/20120505150142.189348931@linutronix.de

cpuidle uses generic kick_all_cpus_sync() now. Remove the unused code.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Link: http://lkml.kernel.org/r/20120507175652.461648208@linutronix.de

Same code. Use the generic version. The special Makefile treatment is
pointless anyway as init_task.o contains only data which is handled by
the linker script. So no point on being treated like head text.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NPaul Mundt <lethal@linux-sh.org>
Link: http://lkml.kernel.org/r/20120503085035.398257169@linutronix.de