softirq: use const char * const for softirq_to_name, whitespace neatening

Reduce data size a little.
Reduce checkpatch noise.

$ size kernel/softirq.o*
   text    data     bss     dec     hex filename
  11554    6013    4008   21575    5447 kernel/softirq.o.new
  11474    6093    4008   21575    5447 kernel/softirq.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

softirq: convert printks to pr_<level>

Use a more current logging style.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

softirq: use ffs() in __do_softirq()

Possible speed improvement of __do_softirq() by using ffs() instead of
using a while loop with an & 1 test then single bit shift.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()

vsnprintf() may let 'r' larger than sizeof(buf), in this case, if 'r' is
also less than "vmcoreinfo_max_size - vmcoreinfo_size" (left size of
destination buffer), next memcpy() will read the unexpected addresses.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Merge branch 'akpm-current/current'

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Conflicts:
drivers/pinctrl/sh-pfc/pfc-r8a7740.c
drivers/pinctrl/sh-pfc/pfc-sh7372.c

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drivers/staging/imx-drm/imx-drm-core.c

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drivers/usb/phy/Kconfig

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Conflicts:
drivers/usb/host/ohci-at91.c

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drivers/clocksource/clksrc-of.c

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drivers/spi/spi-mpc512x-psc.c

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security/selinux/hooks.c

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drivers/md/dm-thin.c

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block/blk-flush.c
fs/btrfs/check-integrity.c
fs/btrfs/extent_io.c
fs/btrfs/scrub.c
fs/f2fs/data.c
fs/f2fs/segment.c
fs/logfs/dev_bdev.c
include/trace/events/f2fs.h

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Conflicts:
Documentation/module-signing.txt

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Conflicts:
sound/soc/fsl/fsl_ssi.c

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Conflicts:
drivers/gpu/drm/i915/intel_ddi.c
drivers/gpu/drm/i915/intel_pm.c

Merge remote-tracking branch 'drm/drm-next'

Conflicts:
drivers/gpu/drm/drm_stub.c
drivers/gpu/drm/i915/intel_pm.c
drivers/staging/imx-drm/imx-drm-core.c

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Conflicts:
arch/arm/boot/dts/imx51.dtsi
arch/arm/boot/dts/imx53.dtsi

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Merge remote-tracking branch 'fscache/fscache'

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Conflicts:
arch/sh/kernel/cpu/sh2a/Makefile
drivers/tty/serial/sh-sci.c
include/linux/serial_sci.h

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