From: Martin Schwidefsky Date: Fri, 19 Sep 2014 12:29:31 +0000 (+0200) Subject: s390/rwlock: use directed yield for write-locked rwlocks X-Git-Tag: omap-for-v3.19/prcm-cleanup~80^2~22 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d59b93da5e572703e1a7311c13dd3472a4e56e30;p=pandora-kernel.git s390/rwlock: use directed yield for write-locked rwlocks Add an owner field to the arch_rwlock_t to be able to pass the timeslice of a virtual CPU with diagnose 0x9c to the lock owner in case the rwlock is write-locked. The undirected yield in case the rwlock is acquired writable but the lock is read-locked is removed. Signed-off-by: Martin Schwidefsky --- Reading git-diff-tree failed