[lkml]   [2018]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
SubjectRe: [PATCH V2] binder: ipc namespace support for android binder
On Mon, 29 Oct 2018, chouryzhou(??????) wrote:
>@@ -63,6 +63,12 @@ struct ipc_namespace {
> unsigned int mq_msg_default;
> unsigned int mq_msgsize_default;
>+ /* next fields are for binder */
>+ struct mutex binder_procs_lock;
>+ struct hlist_head binder_procs;
>+ struct mutex binder_contexts_lock;
>+ struct hlist_head binder_contexts;

I don't think you want a mutex here protecting the binder_contexts list.
Afaict there is no concurrency going on: you only modify it in when doing
namespace init and exit (for which you have no serialization); do you even
need a lock here? Or at least I would think a more lightweight alternative
(rcu/spinlock/rwlock) would suffice.


 \ /
  Last update: 2018-11-08 08:00    [W:0.067 / U:4.484 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site