linux-kernel - [PATCH 0/3] sched/wait, staging/android: simplification and optimization of freeze related code

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <cover.1548998323.git.hle@owl.eu.com>
Date:   Fri, 1 Feb 2019 06:37:10 +0100
From:   Hugo Lefeuvre <hle@....eu.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Greg Hartman <ghartman@...gle.com>,
        Alistair Strachan <strachan@...gle.com>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Christian Brauner <christian@...uner.io>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Joel Fernandes <joel@...lfernandes.org>
Subject: [PATCH 0/3] sched/wait, staging/android: simplification and
 optimization of freeze related code

This patchset changes the wait api to use freezable_schedule when
possible and adds a new wait_event_freezable_hrtimeout method.

wait_event_freezable_hrtimeout is then used to greatly simplify
handle_vsoc_cond_wait in the android vsoc driver.

This reduces the size of the vsoc driver and allows for potential
performance gain during freeze in the wait api.

This is a follow up of my previous patch "sched/wait: introduce
wait_event_freezable_hrtimeout"[0]. More information related to the
performance gain by using freezable_schedule can be found in the
previous discussion[1].

[0] https://lkml.org/lkml/2019/1/17/877
[1] https://lkml.org/lkml/2019/1/19/58

Hugo Lefeuvre (3):
  sched/wait: use freezable_schedule when possible
  sched/wait: introduce wait_event_freezable_hrtimeout
  staging/android: simplify handle_vsoc_cond_wait

 drivers/staging/android/vsoc.c | 69 +++++-----------------------------
 include/linux/wait.h           | 31 +++++++++++----
 2 files changed, 34 insertions(+), 66 deletions(-)

-- 
2.20.1