introduce generic sys_sigaltstack(), switch x86 and um to it
authorAl Viro <viro@zeniv.linux.org.uk>
Fri, 14 Dec 2012 19:09:47 +0000 (14:09 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Wed, 19 Dec 2012 23:07:40 +0000 (18:07 -0500)
Conditional on CONFIG_GENERIC_SIGALTSTACK; architectures that do not
select it are completely unaffected

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

No differences found