On Tue, May 03, 2016 at 12:50:06AM -0700, tip-bot for Stas Sergeev wrote: > Commit-ID: 407bc16ad1769f5cb8ad9555611cb198187ef4cd > Gitweb: http://git.kernel.org/tip/407bc16ad1769f5cb8ad9555611cb198187ef4cd > Author: Stas Sergeev <s...@list.ru> > AuthorDate: Thu, 14 Apr 2016 23:20:03 +0300 > Committer: Ingo Molnar <mi...@kernel.org> > CommitDate: Tue, 3 May 2016 08:37:59 +0200 > > signals/sigaltstack: Prepare to add new SS_xxx flags > > This patch adds SS_FLAG_BITS - the mask that splits sigaltstack > mode values and bit-flags. Since there is no bit-flags yet, the > mask is defined to 0. The flags are added by subsequent patches. > With every new flag, the mask should have the appropriate bit cleared. > > This makes sure if some flag is tried on a kernel that doesn't > support it, the -EINVAL error will be returned, because such a > flag will be treated as an invalid mode rather than the bit-flag. > > That way the existence of the particular features can be probed > at run-time. > > This change was suggested by Andy Lutomirski: > > https://lkml.org/lkml/2016/3/6/158
Please use the message ID in the future Message-ID: <CALCETrW=M1=n6R6dwOj-ks_=+14vf4rz0s3sfty-_guwffz...@mail.gmail.com> to refer to public mails because random web services caching lkml tend to become unreliable or even disappear at some point. I.e., see Link: format below for an example. > Signed-off-by: Stas Sergeev <s...@list.ru> > Cc: Al Viro <v...@zeniv.linux.org.uk> > Cc: Amanieu d'Antras <aman...@gmail.com> > Cc: Andrew Morton <a...@linux-foundation.org> > Cc: Andy Lutomirski <l...@amacapital.net> > Cc: Borislav Petkov <b...@alien8.de> > Cc: Brian Gerst <brge...@gmail.com> > Cc: Denys Vlasenko <dvlas...@redhat.com> > Cc: H. Peter Anvin <h...@zytor.com> > Cc: Linus Torvalds <torva...@linux-foundation.org> > Cc: Michal Hocko <mho...@suse.com> > Cc: Oleg Nesterov <o...@redhat.com> > Cc: Pavel Emelyanov <xe...@parallels.com> > Cc: Peter Zijlstra (Intel) <pet...@infradead.org> > Cc: Peter Zijlstra <pet...@infradead.org> > Cc: Richard Weinberger <rich...@nod.at> > Cc: Sasha Levin <sasha.le...@oracle.com> > Cc: Shuah Khan <shua...@osg.samsung.com> > Cc: Thomas Gleixner <t...@linutronix.de> > Cc: Vladimir Davydov <vdavy...@parallels.com> > Cc: linux-...@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Link: http://lkml.kernel.org/r/1460665206-13646-3-git-send-email-s...@list.ru > Signed-off-by: Ingo Molnar <mi...@kernel.org> > --- > include/uapi/linux/signal.h | 3 +++ > kernel/signal.c | 16 ++++++---------- > 2 files changed, 9 insertions(+), 10 deletions(-) Thanks. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.
