From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 5 Sep 2012 22:08:40 +0000 (-0400)
Subject: alpha: simplify TIF_NEED_RESCHED handling
X-Git-Tag: v3.7-rc1~31^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7721d3c2083c27bfb8e4c1335d343e25ae1a663f;p=pandora-kernel.git

alpha: simplify TIF_NEED_RESCHED handling

In case we have both NEED_RESCHED and SIGPENDING/NOTIFY_RESUME,
handle the latter first.  We'll get to original priorities in
the next commit, but now that allows to simplify the treatment
of NEED_RESCHED-only case nicely.  Namely, now there no need to
preserve the data for restarts across the call of schedule() in
$work_resched; we can get there only if we had either returned
from syscall without SIGPENDING (in which case we should've
had no restart-worthy return value and want no restarts) or
already got through do_notify_resume() call (in which case we
want no restarts anymore).  So we can just slap 0 into $19
instead of preserving it (and $20).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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