top: speedup if tty info is not requested

diff --git a/libbb/procps.c b/libbb/procps.c
index 879cc105a00b53166cfe3529832b8920fc61ff94..e04ff34ff20a95cda224899c20377c8be80dede3 100644 (file)
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -243,10 +243,12 @@ procps_status_t* procps_scan(procps_status_t* sp, int flags)
                        sp->tty_str[0] = '?';
                        /* sp->tty_str[1] = '\0'; - done by memset */
                        tty = fast_strtoul_10(cp, &cp);
-                       if (tty) /* tty field of "0" means "no tty" */
+                       if (tty && (flags & PSSCAN_TTY)) {
+                               /* tty field of "0" means "no tty" */
                                snprintf(sp->tty_str, sizeof(sp->tty_str), "%u,%u",
                                        (tty >> 8) & 0xfff, /* major */
                                        (tty & 0xff) | ((tty >> 12) & 0xfff00));
+                       }
                        cp = skip_fields(cp, 6); /* tpgid, flags, min_flt, cmin_flt, maj_flt, cmaj_flt */
                        sp->utime = fast_strtoul_10(cp, &cp);
                        sp->stime = fast_strtoul_10(cp, &cp);