GFS2_LKS_SRTTB
(unsigned long long)gl->gl_stats.stats[GFS2_LKS_SRTTB],
[GFS2_LKS_SRTTB] = "srttb",
unsigned index = blocking ? GFS2_LKS_SRTTB : GFS2_LKS_SRTT;
if (st->stats[GFS2_LKS_SRTTB]) {
a_srttb += st->stats[GFS2_LKS_SRTTB];
l_srttb = gl->gl_stats.stats[GFS2_LKS_SRTTB];
__entry->srttb = gl->gl_stats.stats[GFS2_LKS_SRTTB];