[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] tools: use sysfs interface to balloon driver if present
The pvops dom0 kernel does not expose the balloon driver via /proc/xen, so use the sysfs interface. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx> diff -r 1944c39d0007 tools/python/xen/xend/osdep.py --- a/tools/python/xen/xend/osdep.py Fri Nov 14 09:57:33 2008 -0800 +++ b/tools/python/xen/xend/osdep.py Fri Nov 14 12:26:51 2008 -0800 @@ -38,7 +38,10 @@ "SunOS": "vif-vnic" } -def _linux_balloon_stat(label): +PROC_XEN_BALLOON = '/proc/xen/balloon' +SYSFS_XEN_MEMORY = '/sys/devices/system/xen_memory/xen_memory0' + +def _linux_balloon_stat_proc(label): """Returns the value for the named label, or None if an error occurs.""" xend2linux_labels = { 'current' : 'Current allocation', @@ -47,7 +50,6 @@ 'high-balloon' : 'High-mem balloon', 'limit' : 'Xen hard limit' } - PROC_XEN_BALLOON = '/proc/xen/balloon' f = file(PROC_XEN_BALLOON, 'r') try: for line in f: @@ -61,6 +63,29 @@ return None finally: f.close() + +def _linux_balloon_stat_sysfs(label): + sysfiles = { 'target' : 'target_kb', + 'current' : 'info/current_kb', + 'low-balloon' : 'info/low_kb', + 'high-balloon' : 'info/high_kb', + 'limit' : 'info/hard_limit_kb' } + + name = os.path.join(SYSFS_XEN_MEMORY, sysfiles[label]) + f = file(name, 'r') + + val = f.read().strip() + if val.isdigit(): + return int(val) + return None + +def _linux_balloon_stat(label): + if os.access(PROC_XEN_BALLOON, os.F_OK): + return _linux_balloon_stat_proc(label) + elif os.access(SYSFS_XEN_MEMORY, os.F_OK): + return _linux_balloon_stat_sysfs(label) + + return None def _solaris_balloon_stat(label): """Returns the value for the named label, or None if an error occurs.""" _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |