xentop: tmem: no stats for non-tmem domains

In xentop, don't re-use and print stale data of previous tmem
domain for subsequent non-tmem domain.

Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>

diff --git a/tools/xenstat/libxenstat/src/xenstat.c b/tools/xenstat/libxenstat/src/xenstat.c
index 6396f5959d585048f1edb13bb60b50787ee814c7..60b1a50a94630d7ac8eb3c70daf55df149bc6a41 100644 (file)
--- a/tools/xenstat/libxenstat/src/xenstat.c
+++ b/tools/xenstat/libxenstat/src/xenstat.c
@@ -149,8 +149,9 @@ void domain_get_tmem_stats(xenstat_handle * handle, xenstat_domain * domain)
 {
        char buffer[4096];
 
-       xc_tmem_control(handle->xc_handle,-1,TMEMC_LIST,domain->id,
-                        sizeof(buffer),-1,-1,buffer);
+       if (xc_tmem_control(handle->xc_handle,-1,TMEMC_LIST,domain->id,
+                        sizeof(buffer),-1,-1,buffer) < 0)
+               return;
        domain->tmem_stats.curr_eph_pages = parse(buffer,"Ec");
        domain->tmem_stats.succ_eph_gets = parse(buffer,"Ge");
        domain->tmem_stats.succ_pers_puts = parse(buffer,"Pp");