[XEND][XM] Move system memory reporting to XendConfig rather than getSysMem.

Remove the additional XMLRPC calls per domain just to get system
memory and instead make sure we update that value and return it via
the SXP that gets returned when xm list is called.

Signed-off-by: Alastair Tse <atse@xensource.com>

tools/python/xen/xend/XendConfig.py

@@ -661,6 +661,8 @@ class XendConfig(dict):
             sxpr.append(['status', str(DOM_STATE_HALTED)])
 
         sxpr.append(['state', self._get_old_state_string()])
+        sxpr.append(['memory_dynamic_max', self.get('memory_dynamic_max',
+                                                    self['memory'])])
 
         # For save/restore migration
         if domain:
@@ -718,6 +720,10 @@ class XendConfig(dict):
 
         self['maxmem'] = max(self['memory'], self['maxmem'])
 
+        # convert mem_kb from domain_getinfo to something more descriptive
+        if 'mem_kb' in self:
+            self['memory_dynamic_max'] = (self['mem_kb'] + 1023)/1024
+
         # Verify devices
         for d_uuid, (d_type, d_info) in self['device'].items():
             if d_type not in XendDevices.valid_devices():

tools/python/xen/xend/XendDomainInfo.py

@@ -1044,11 +1044,6 @@ class XendDomainInfo:
         except:
             log.exception('Failed to restart domain %s.', str(old_domid))
 
-    def getSysMem(self):
-        info = dom_get(self.domid)
-        xs_memory=int(info['mem_kb'])/1024
-        return xs_memory
-
     def _preserveForRestart(self):
         """Preserve a domain that has been shut down, by giving it a new UUID,
         cloning the VM details, and giving it a new name.  This allows us to

tools/python/xen/xend/server/XMLRPCServer.py

@@ -79,7 +79,7 @@ methods = ['device_create', 'device_configure',
            'destroyDevice','getDeviceSxprs',
            'setMemoryTarget', 'setName', 'setVCpuCount', 'shutdown',
            'send_sysrq', 'getVCPUInfo', 'waitForDevices',
-           'getRestartCount', 'getSysMem']
+           'getRestartCount']
 
 exclude = ['domain_create', 'domain_restore']
 

tools/python/xen/xm/main.py

@@ -540,7 +540,7 @@ def parse_doms_info(info):
     return {
         'domid'    : get_info('domid',        int,   -1),
         'name'     : get_info('name',         str,   '??'),
-        'mem'      : get_info('memory',       int,   0),
+        'mem'      : get_info('memory_dynamic_max', int,   0),
         'vcpus'    : get_info('online_vcpus', int,   0),
         'state'    : get_info('state',        str,    ''),
         'cpu_time' : get_info('cpu_time',     float, 0),
@@ -563,12 +563,6 @@ def parse_sedf_info(info):
         }
 
 def xm_brief_list(doms):
-    def get_mem_info():
-       dom_sysMem=server.xend.domain.getSysMem(d['domid'])
-       if dom_sysMem:
-               d['mem']=dom_sysMem
-
-
     print '%-40s %3s %5s %5s %10s %9s' % \
           ('Name', 'ID', 'Mem', 'VCPUs', 'State', 'Time(s)')
     
@@ -577,7 +571,6 @@ def xm_brief_list(doms):
     
     for dom in doms:
         d = parse_doms_info(dom)
-        get_mem_info()
         print format % d
 
 def xm_label_list(doms):