posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper
commit1c94da3e7480e3370945aad2b784343da9eb664f
authorThomas Gleixner <tglx@linutronix.de>
Thu, 14 Jan 2016 16:54:47 +0000 (14 16:54 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 25 Feb 2016 20:01:25 +0000 (25 12:01 -0800)
treeae138553d4e405ea08d0860d481c4ca09015ab39
parent565f222968d300657ad40d2fad91e4ccf3148d89
posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper

commit 572c39172684c3711e4a03c9a7380067e2b0661c upstream.

As Helge reported for timerfd we have the same issue in posix timers. We
return remaining time larger than the programmed relative time to user space
in case of CONFIG_TIME_LOW_RES=y. Use the proper function to adjust the extra
time added in hrtimer_start_range_ns().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Helge Deller <deller@gmx.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: linux-m68k@lists.linux-m68k.org
Cc: dhowells@redhat.com
Link: http://lkml.kernel.org/r/20160114164159.450510905@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/time/posix-timers.c