Re: Fwd: Booting time is increased after applying kernel 3.10

[Stephen Smalley <sds@tycho.nsa.gov>]

On 04/01/2015 02:58 PM, Ravi Kumar wrote:
> Hi Team , 
> In reference to old discussion via the mail thread , 
> http://marc.info/?l=selinux&m=140387478632108&q=raw
> 
> This is on the context on removing the synchronize_net() from bootup and
> was concluded with optimization  on reducing the the number of call to
> synchronize_net()  In context to to this what we are seeing is skipping
> the call is saving much time  on android bootup  and based on the
> discussion  at least for android  systems it look like we can still
>  skip this call as suggest in the initial patch  which is much saving on
> the bootup time .  But still i dont see any mainline / signed off sort
> of patch for andriod  or any one using this . Did we see any issue or
> planned different .
> 
> At least on KK the bootup time was under control for L code base we are
> trying to see  all the ways of optimization  any input are greatly
>  appreciated.       

commit 615e51fdda6f274e94b1e905fcaf6111e0d9aa20
Author: Paul Moore <pmoore@redhat.com>
Date:   Thu Jun 26 14:33:56 2014 -0400

    selinux: reduce the number of calls to synchronize_net() when
flushing cache

    When flushing the AVC, such as during a policy load, the various
    network caches are also flushed, with each making a call to
    synchronize_net() which has shown to be expensive in some cases.
    This patch consolidates the network cache flushes into a single AVC
    callback which only calls synchronize_net() once for each AVC cache
    flush.

    Reported-by: Jaejyn Shin <flagon22bass@gmail.com>
    Signed-off-by: Paul Moore <pmoore@redhat.com>