From: Wanpeng Li <kernellwp@gmail.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
kvm <kvm@vger.kernel.org>
Cc: "Ingo Molnar" <mingo@kernel.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
"Rik van Riel" <riel@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Frederic Weisbecker" <fweisbec@gmail.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Wanpeng Li" <wanpeng.li@hotmail.com>,
"John Stultz" <john.stultz@linaro.org>
Subject: Re: [PATCH v6 0/3] Sched, KVM: st: Add steal time support to full dynticks CPU time accounting
Date: Mon, 13 Jun 2016 19:28:37 +0800 [thread overview]
Message-ID: <CANRm+Cy+mE2pPadnkyWKkQM6zCEoHhw6m_jYShbqZL-GuGL6pQ@mail.gmail.com> (raw)
In-Reply-To: <1465813966-3116-1-git-send-email-wanpeng.li@hotmail.com>
Cc maintainers/reviewers,
2016-06-13 18:32 GMT+08:00 Wanpeng Li <kernellwp@gmail.com>:
> Periodic/NOHZ idle which don't use vtime have logic account steal time,
> however, vtime(depends on context tracking) which is just used in full
> dynticks doesn't account steal time, this patchset adds the steal time
> acccount support in vtime which will be used in full dynticks guest.
>
> Patch 1 and patch 2 fix steal clock warp and prev steal time account
> during cpu hotplug bugs.
> Patch 3 adds the steal time support to full dynticks CPU time accounting.
>
> N.B. This version of patchset drops previous Acked-by and Reviewed-by since
> they are different from earlier version. :)
>
> v5 -> v6:
> * improve commit message of patch 2/3, 3/3
> * fix account st twice
> v4 -> v5:
> * improve commit message of patch 1/3
> * revert commit e9532e69b8d1
> * apply same logic to account_idle_time, so change get_vtime_delta instead
> v3 -> v4:
> * fix grammar errors, thanks Ingo
> * cleanup fragile codes, thanks Ingo
> v2 -> v3:
> * fix the root cause
> * convert steal time jiffies to cputime
> v1 -> v2:
> * update patch subject, description and comments
> * deal with the case where steal time suddenly increases by a ludicrous amount
> * fix divide zero bug, thanks Rik
>
> Wanpeng Li (3):
> KVM: fix steal clock warp during guest cpu hotplug
> sched/cputime: Fix prev steal time accouting during cpu hotplug
> sched/cputime: Add steal time support to full dynticks CPU time
> accounting
>
> arch/x86/kernel/kvm.c | 2 --
> kernel/sched/core.c | 1 -
> kernel/sched/cputime.c | 16 +++++++++-------
> kernel/sched/sched.h | 13 -------------
> 4 files changed, 9 insertions(+), 23 deletions(-)
>
> --
> 1.9.1
>
prev parent reply other threads:[~2016-06-13 11:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 10:32 [PATCH v6 0/3] Sched, KVM: st: Add steal time support to full dynticks CPU time accounting Wanpeng Li
2016-06-13 10:32 ` [PATCH v6 1/3] KVM: fix steal clock warp during guest cpu hotplug Wanpeng Li
2016-06-13 10:44 ` Paolo Bonzini
2016-06-13 11:28 ` Peter Zijlstra
2016-06-13 11:31 ` Wanpeng Li
2016-06-14 11:26 ` [tip:sched/core] KVM: Fix steal clock warp during guest CPU hotplug tip-bot for Wanpeng Li
2016-06-13 10:32 ` [PATCH v6 2/3] sched/cputime: Fix prev steal time accouting during cpu hotplug Wanpeng Li
2016-06-13 10:44 ` Paolo Bonzini
2016-06-14 11:26 ` [tip:sched/core] sched/cputime: Fix prev steal time accouting during CPU hotplug tip-bot for Wanpeng Li
2016-06-13 10:32 ` [PATCH v6 3/3] sched/cputime: Add steal time support to full dynticks CPU time accounting Wanpeng Li
2016-06-13 10:44 ` Paolo Bonzini
2016-06-14 11:27 ` [tip:sched/core] " tip-bot for Wanpeng Li
2016-06-13 11:28 ` Wanpeng Li [this message]
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