[Bug 1064929] Kernel container scalability issue in docker - VFS and mount path consuming too much CPU

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1064929

--- Comment #17 from Stephen Tweedie  ---
Created attachment 865585
  --> https://bugzilla.redhat.com/attachment.cgi?id=865585&action=edit
Disable CONFIG_SLUB_DEBUG

Patch against dist-git kernel rhel-7.0 branch to disable CONFIG_SLUB_DEBUG.

The
-BuildRequires: rpm-build >= 4.9.0-1, elfutils >= elfutils-0.153-1
+BuildRequires: rpm-build >= 4.9.0-1, elfutils >= 0.153-1
is needed to satisfy mock (elfutils-0.153-1 has two "-" separators and is
rejected as an invalid VR.)

Build with
$ rhpkg srpm
$ mock -r rhel-7-x86_64 --without=debug --without=debuginfo $PATH_TO_SRPM

NB -- the patch updates ONLY the kernel-x86_64 config, not kernel-debug nor
other architectures.