Markus Lehtonen cee685ca0d oeqa.buildperf: functionality to drop kernel caches ...

Add a new utility class for dropping Linux kernel caches.  It uses sudo
and tee to write to the drop_caches file. Checking if the user has the
permissions to drop caches (without a password) is done by trying to
writing an invalid value to the drop_caches file. This way, we will find
if writing (with tee) is possible but not really dropping caches, yet.

User can avoid giving the password by adding something like:
<user> ALL = NOPASSWD: /usr/bin/tee /proc/sys/vm/drop_caches
to the system sudoers file.

(From OE-Core rev: c9cb248429ced50c96d11ba5361c272d4c9b9323)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2016-07-01 16:22:46 +01:00

..

oe

lib/oe/package_manager: keep platform_extra and default_platform_extra lists ordered

2016-07-01 16:22:45 +01:00

oeqa

oeqa.buildperf: functionality to drop kernel caches

2016-07-01 16:22:46 +01:00