timekeeping: add arch_offset hook to ktime_get functions
authorHector Palacios <hector.palacios@digi.com>
Mon, 14 Nov 2011 10:15:25 +0000 (11:15 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 9 Dec 2011 16:54:23 +0000 (08:54 -0800)
commit92ad5083db212ff3c5f6d1d085d85790f7a6c42c
tree5d4947dc1f655656131a462c1482dd55c7d7f8a4
parentc1d98cbbfc393f166b8a675b3acbdfab320adadc
timekeeping: add arch_offset hook to ktime_get functions

commit d004e024058a0eaca097513ce62cbcf978913e0a upstream.

ktime_get and ktime_get_ts were calling timekeeping_get_ns()
but later they were not calling arch_gettimeoffset() so architectures
using this mechanism returned 0 ns when calling these functions.

This happened for example when running Busybox's ping which calls
syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts) which eventually
calls ktime_get. As a result the returned ping travel time was zero.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kernel/time/timekeeping.c