From: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Date: Thu, 10 Apr 2014 13:09:47 +0000 (+0200)
Subject: fio: fix s390 timing for older machines/binutils
X-Git-Tag: fio-2.1.8~4
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=81795ce399bef3af497e5767546458e20ce81bbf;hp=81795ce399bef3af497e5767546458e20ce81bbf

fio: fix s390 timing for older machines/binutils

Older gcc/binutils or one with very low default march will refuse to use stckf.
On top of that machines older than a z196 don not even have the store clock
fast facility.

To fix all of those issues, check for the facilities in configure step and make
the usage of stckf and a matching march dependent to it.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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