From: Jan Glauber <jang@linux.vnet.ibm.com>
Date: Sun, 30 Oct 2011 14:17:06 +0000 (+0100)
Subject: [S390] qdio: EQBS retry after CCQ 96
X-Git-Tag: v3.2-rc1~109^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25f269f17316549e026c5dd0db7526411a504de6;p=pandora-kernel.git

[S390] qdio: EQBS retry after CCQ 96

Running under z/VM with QIOASSIST enabled, qdio queues could stall if EQBS
did not extract all SBAL states. Add an instant retry for EQBS and, if the
retry fails, set up a timer to ensure outstanding SBALs are processed later.

While at it, optimize qdio_do_eqbs and qdio_do_sqbs to eliminate 3 jumps on
the hot path.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

Reading git-diff-tree failed