From: Sonic Zhang <sonic.zhang@analog.com>
Date: Mon, 6 Sep 2010 10:16:04 +0000 (+0000)
Subject: Blackfin: add new cacheflush syscall
X-Git-Tag: v2.6.37-rc1~151^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99a5b2878b56d24919eb7e646f2d8e02f63a6efc;p=pandora-kernel.git

Blackfin: add new cacheflush syscall

Flushing caches sometimes requires anomaly workarounds which require
supervisor-only insns.  Normally we don't need to flush caches from
userspace so this isn't a problem, but when gcc generates trampolines
on the stack, we do.

So add a new syscall for gcc to use modeled after the mips version.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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