From: Ben Hutchings <ben@decadent.org.uk>
Date: Mon, 26 Nov 2012 03:24:19 +0000 (-0500)
Subject: signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer
X-Git-Tag: v3.2.42~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b170d21942749093f0dac17735837728372e8bff;p=pandora-kernel.git

signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer

flush_signal_handlers() needs to know whether sigaction::sa_restorer
is defined, not whether SA_RESTORER is defined.  Define the
__ARCH_HAS_SA_RESTORER macro to indicate this.

Vaguely based on upstream commit 574c4866e33d 'consolidate kernel-side
struct sigaction declarations'.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
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