# HG changeset patch

# User Jeff Schroeder <jeffschroed@gmail.com>

# Date 1241139860 18000

# Node ID 4320ad746bcceca5e1d2e00af63d4e7ce8738586

# Parent  741bd2646ebf4c56eb45194e6194de3f1d47bb43

Kernel version >= 2.6.27 check

Awesome tool! I learned about this from the LWN article and

immediately (stupidly) tried it out on a centos 5 host. Here is a

patch to add a kernel version check.

--- a/smem	Thu Apr 30 11:57:52 2009 -0500

+++ b/smem	Thu Apr 30 20:04:20 2009 -0500

@@ -548,6 +548,13 @@

     pylab.legend([p[0] for p in pl], key)

     pylab.show()

+def kernel_version_check():

+    kernel_release = os.uname()[2].split('-')[0]

+    if kernel_release < "2.6.27":

+        name = os.path.basename(sys.argv[0])

+        sys.stderr.write(name + " requires a kernel >= 2.6.27\n")

+        sys.exit(-1)

+

 parser = optparse.OptionParser("%prog [options]")

 parser.add_option("-H", "--no-header", action="store_true",

                   help="disable header line")

@@ -596,6 +603,7 @@

                   help="/proc data source")

+kernel_version_check()

 defaults = {}

 parser.set_defaults(**defaults)

 (options, args) = parser.parse_args()