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]
Date:   Thu, 11 Apr 2019 13:34:43 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Frederic Weisbecker <fweisbec@...il.com>
Cc:     Nicholas Piggin <npiggin@...il.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 0/5] Allow CPU0 to be nohz full

Since last time, I added a compile time option to opt-out of this
if the platform does not support suspend on non-zero, and tried to
improve legibility of changelogs and explain the justification
better.

I have been testing this on powerpc/pseries and it seems to work
fine (the firmware call to suspend can be called on any CPU and
resumes where it left off), but not included here because the
code has some bitrot unrelated to this series which I hacked to
fix. I will discuss it and either send an acked patch to go with
this series if it is small, or fix it in powerpc tree.

Thanks,
Nick

Nicholas Piggin (5):
  sched/core: allow the remote scheduler tick to be started on CPU0
  PM / suspend: add function to disable secondaries for suspend
  kernel/cpu: Allow non-zero CPU to be primary for suspend / kexec
    freeze
  kernel/sched/isolation: require a present CPU in housekeeping mask
  nohz_full: Allow the boot CPU to be nohz_full

 include/linux/cpu.h       | 15 ++++++++++++
 kernel/cpu.c              | 10 +++++++-
 kernel/kexec_core.c       |  4 ++--
 kernel/power/Kconfig      |  9 +++++++
 kernel/power/hibernate.c  | 12 +++++-----
 kernel/power/suspend.c    |  4 ++--
 kernel/sched/core.c       |  2 +-
 kernel/sched/isolation.c  | 18 ++++++++++----
 kernel/time/tick-common.c | 50 +++++++++++++++++++++++++++++++++++----
 kernel/time/tick-sched.c  | 34 ++++++++++++++++++--------
 11 files changed, 131 insertions(+), 31 deletions(-)

-- 
2.20.1

Powered by blists - more mailing lists