Remove useless #ifdefs from Linux sig*.c syscalls

sigprocmask.c, sigtimedwait.c, sigwait.c and sigwaitinfo.c files from
sysdeps/unix/sysv/linux include nptl-signals.h via nptl/pthreadP.h,
and so SIGCANCEL and SIGSETXID become defined unconditionally. But
later in the code, there are some checks weither symbols defined,
which is useless. This patch removes useless checks.

Checked on x86_64-linux-gnu.

	* sysdeps/unix/sysv/linux/sigprocmask.c: Remove useless #ifdefs.
	* sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

1 files changed, 1 insertions, 8 deletions

diff --git a/sysdeps/unix/sysv/linux/sigtimedwait.c b/sysdeps/unix/sysv/linux/sigtimedwait.c
index ab1a84ef1c..42afbce22c 100644
--- a/sysdeps/unix/sysv/linux/sigtimedwait.c
+++ b/sysdeps/unix/sysv/linux/sigtimedwait.c
@@ -29,25 +29,18 @@ int
 __sigtimedwait (const sigset_t *set, siginfo_t *info,
 		const struct timespec *timeout)
 {
-#ifdef SIGCANCEL
   sigset_t tmpset;
   if (set != NULL
       && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
-# ifdef SIGSETXID
-	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
-# endif
-	  ))
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)))
     {
       /* Create a temporary mask without the bit for SIGCANCEL set.  */
       // We are not copying more than we have to.
       memcpy (&tmpset, set, _NSIG / 8);
       __sigdelset (&tmpset, SIGCANCEL);
-# ifdef SIGSETXID
       __sigdelset (&tmpset, SIGSETXID);
-# endif
       set = &tmpset;
     }
-#endif
 
     /* XXX The size argument hopefully will have to be changed to the
        real size of the user-level sigset_t.  */