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767f30210b
kernel-ark/arch/tile
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Henrik Austad 767f30210b tile: avoid overflow in ns2cycles 
In commit 4cecf6d401 ("sched, x86: Avoid unnecessary overflow in
sched_clock") and in recent patch "clocksource: avoid unnecessary
overflow in cyclecounter_cyc2ns()" https://lkml.org/lkml/2014/3/4/17,
the mult-shift approach is replaced by 2 steps to avoid storing a large,
intermediate value that could overflow.

arch/tile/kernel/time.c has a similar pattern in cycles2ns, and this
copies the same pattern in this function

CC: John Stultz <johnstul@us.ibm.com>
CC: Mike Galbraith <bitbucket@online.de>
CC: Salman Qazi <sqazi@google.com>
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2014-03-06 11:53:12 -05:00
..
configs tile: refresh tile defconfig files 2013-09-06 13:06:30 -04:00
gxio tile: improve gxio iorpc autogenerated code style 2013-09-16 15:47:20 -04:00
include tile: remove compat_sys_lookup_dcookie declaration to fix compile error 2014-02-01 10:55:15 -08:00
kernel tile: avoid overflow in ns2cycles 2014-03-06 11:53:12 -05:00
kvm arch/tile/kvm: remove depends on CONFIG_EXPERIMENTAL 2013-01-17 12:11:26 -08:00
lib tile: include: asm: use 'long long' instead of 'u64' for atomic64_t and its related functions 2013-09-27 16:08:56 -04:00
mm tile: handle pgtable_page_ctor() fail 2013-11-15 09:32:19 +09:00
Kbuild
Kconfig kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
Kconfig.debug tile: remove DEBUG_EXTRA_FLAGS kernel config option 2013-09-03 14:52:17 -04:00
Makefile tile: remove DEBUG_EXTRA_FLAGS kernel config option 2013-09-03 14:52:17 -04:00