psignal.3: ATTRIBUTES: Note functions that are thread-safe

After research, We think psiginfo() is thread-safe. But, there
is not marking of psiginfo() in glibc document.
psignal() matches glibc marking.
- psignal:  MT-Safe locale
- psiginfo: MT-Safe locale

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/psignal.3 b/man3/psignal.3
index 12124be1aedc53b15fcbc92fe1ec000be421b1cf..3ded4b07a2c0a1bf20924157fa3e87ae8cdb5742 100644 (file)
--- a/man3/psignal.3
+++ b/man3/psignal.3
@@ -96,6 +96,20 @@ functions return no value.
 The
 .BR psiginfo ()
 function was added to glibc in version 2.10.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbw21 lb lb
+l l l.
+Interface      Attribute       Value
+T{
+.BR psignal (),
+.BR psiginfo ()
+T}     Thread safety   MT-Safe locale
+.TE
+
 .SH CONFORMING TO
 POSIX.1-2008, 4.3BSD.
 .SH BUGS