tree 4906607e35a4bee0e84e42d59985af645c1564a2
parent 8821d24cd261aede9b0436cd3252b17a60ccc33a
author Hendrik Brueckner <brueckner@linux.vnet.ibm.com> 1271949426 +0200
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> 1271949439 +0200

[S390] vdso: use ntp adjusted clock multiplier

Commit "timekeeping: Fix clock_gettime vsyscall time warp" (0696b711e)
introduced the new parameter "mult" to update_vsyscall(). This parameter
contains the internal NTP adjusted clock multiplier.

The s390x vdso did not use this adjusted multiplier.  Instead, it used
the constant clock multiplier for gettimeofday() and clock_gettime()
variants.  This may result in observable time warps as explained in
commit 0696b711e.

Make the NTP adjusted clock multiplier available to the s390x vdso
implementation and use it for time calculations.

Cc: <stable@kernel.org>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>