Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1528456

Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes
Date 2016-11-23 15:40 +0100
Message-ID <sGGSm-65N-33@gated-at.bofh.it> (permalink)
References <sGDUt-4co-3@gated-at.bofh.it> <sGGSm-65N-35@gated-at.bofh.it> <sGGSm-65N-37@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Wed, Nov 23, 2016 at 03:25:25PM +0100, Daniel Vetter wrote:

> Without thinking it through in detail this is a PI issue, except that we
> replace boosting with wakeup&back-off. Could we perhaps steal something
> from rt mutexes to make it fair&efficient?

rt_mutexes order the waiters by 'priority' and wake the top most.

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Nicolai Hähnle <nhaehnle@gmail.com> - 2016-11-23 12:30 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Daniel Vetter <daniel@ffwll.ch> - 2016-11-23 14:00 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Daniel Vetter <daniel@ffwll.ch> - 2016-11-23 14:10 +0100
    Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Daniel Vetter <daniel@ffwll.ch> - 2016-11-23 14:20 +0100
      Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Maarten Lankhorst <dev@mblankhorst.nl> - 2016-11-23 14:50 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Peter Zijlstra <peterz@infradead.org> - 2016-11-23 14:10 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Peter Zijlstra <peterz@infradead.org> - 2016-11-23 15:40 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Daniel Vetter <daniel@ffwll.ch> - 2016-11-23 16:10 +0100
    Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Nicolai Hähnle <nhaehnle@gmail.com> - 2016-11-24 12:30 +0100
      Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Peter Zijlstra <peterz@infradead.org> - 2016-11-24 12:50 +0100
        Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Daniel Vetter <daniel@ffwll.ch> - 2016-11-24 13:00 +0100
          Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Peter Zijlstra <peterz@infradead.org> - 2016-11-24 13:20 +0100
  Re: [PATCH 1/4] locking/ww_mutex: Fix a deadlock affecting ww_mutexes Peter Zijlstra <peterz@infradead.org> - 2016-11-23 16:20 +0100

csiph-web