Fix Issue#3: cset fails to create cpu sets if some cpus are offline

Problem was in cset.rescan() where if certain cpus are offline the all
cpu mask turns into a complex expression.  The split of this
expression did not account for commas and thus threw an exception if
commas were present.  This patch fixes that problem and accounts for
complex cpu expression.  Also added a couple of targets to the
Makefile.

Makefile

@@ -5,6 +5,15 @@ PYTHON	?= python
 all:
 	$(PYTHON) setup.py build
 
+rpm:
+	$(PYTHON) setup.py bdist_rpm
+
+srcrpm:
+	$(PYTHON) setup.py bdist_rpm
+
+srcdist:
+	$(PYTHON) setup.py sdist
+
 install:
 	$(PYTHON) setup.py install --prefix=$(PREFIX) --root=$(DESTDIR)
 

NEWS

@@ -1,3 +1,14 @@
+============================================================
+Cpuset 1.5.5 Pre-release (XXX, 2010)
+http://code.google.com/p/cpuset
+http://download.opensuse.org/repositories/home:/tsariounov:/cpuset/
+
+Maintenance update to 1.5.4 includes fixes as follows.
+
+* Fix for Issue#3: cset fails to create cpu sets if some cpus are offline
+  Problem in cset.rescan() for maxcpu if root cpuset cpus are complex
+  pattern due to offlining cpus.
+
 ============================================================
 Cpuset 1.5.4 (May 7, 2010)
 http://code.google.com/p/cpuset

cpuset.spec

@@ -16,7 +16,7 @@
 # norootforbuild  
 
 Name:           cpuset
-Version:        1.5.4
+Version:        1.5.4.2
 Release:        1
 License:        GPL v2 only
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build

cpuset/cset.py

@@ -343,8 +343,11 @@ def rescan():
     global RootSet, maxcpu, allcpumask
     RootSet = CpuSet()
     # figure out system properties
-    maxcpu = int(RootSet.cpus.split('-')[-1])
+    log.debug("rescan: all cpus = %s", RootSet.cpus)
+    maxcpu = int(RootSet.cpus.split('-')[-1].split(',')[-1])
+    log.debug("        max cpu = %s", maxcpu)
     allcpumask = calc_cpumask(maxcpu)
+    log.debug("        allcpumask = %s", allcpumask)
 
 def cpuspec_check(cpuspec, usemax=True):
     """check format of cpuspec for validity"""