From: Avi Kivity <avi@redhat.com>
To: kvm-ia64@vger.kernel.org
Subject: Re: [PATCH 2/3] KVM: Centralize slots_lock aquisition during KVM_CREATE_IRQCHIP
Date: Thu, 16 Dec 2010 09:55:11 +0000 [thread overview]
Message-ID: <4D09E1FF.9040408@redhat.com> (raw)
In-Reply-To: <20101216014326.9210211a.takuya.yoshikawa@gmail.com>
On 12/16/2010 11:47 AM, Takuya Yoshikawa wrote:
>> They're under srcu now, the comments are outdated.
>>
>> We used to have slots_lock be a rwsem, taken for read or write as
>> necessary. Now we use srcu for read, and the slots_lock mutex +
>> synchronize_srcu for write.
>>
>
>
> Ah, would you mind updating the comments?
> - or just removing outdated ones?
>
>
Fixing the comments would be good.
> I will reread these locking based on your answer!
>
One day I'll write Documentation/kvm/locking.txt, so it could get
outdated as well.
--
error compiling committee.c: too many arguments to function
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com>
To: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Cc: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>,
mtosatti@redhat.com, kvm@vger.kernel.org,
kvm-ia64@vger.kernel.org
Subject: Re: [PATCH 2/3] KVM: Centralize slots_lock aquisition during KVM_CREATE_IRQCHIP
Date: Thu, 16 Dec 2010 11:55:11 +0200 [thread overview]
Message-ID: <4D09E1FF.9040408@redhat.com> (raw)
In-Reply-To: <4D09E036.2090705@oss.ntt.co.jp>
On 12/16/2010 11:47 AM, Takuya Yoshikawa wrote:
>> They're under srcu now, the comments are outdated.
>>
>> We used to have slots_lock be a rwsem, taken for read or write as
>> necessary. Now we use srcu for read, and the slots_lock mutex +
>> synchronize_srcu for write.
>>
>
>
> Ah, would you mind updating the comments?
> - or just removing outdated ones?
>
>
Fixing the comments would be good.
> I will reread these locking based on your answer!
>
One day I'll write Documentation/kvm/locking.txt, so it could get
outdated as well.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-12-16 9:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-15 16:43 [PATCH 2/3] KVM: Centralize slots_lock aquisition during Takuya Yoshikawa
2010-12-15 16:43 ` [PATCH 2/3] KVM: Centralize slots_lock aquisition during KVM_CREATE_IRQCHIP Takuya Yoshikawa
2010-12-16 9:11 ` Avi Kivity
2010-12-16 9:11 ` Avi Kivity
2010-12-16 9:29 ` Takuya Yoshikawa
2010-12-16 9:29 ` Takuya Yoshikawa
2010-12-16 9:34 ` Avi Kivity
2010-12-16 9:34 ` Avi Kivity
2010-12-16 9:47 ` Takuya Yoshikawa
2010-12-16 9:47 ` Takuya Yoshikawa
2010-12-16 9:55 ` Avi Kivity [this message]
2010-12-16 9:55 ` Avi Kivity
2010-12-16 12:51 ` [PATCH 2/3] KVM: Centralize slots_lock aquisition during Takuya Yoshikawa
2010-12-16 12:51 ` [PATCH 2/3] KVM: Centralize slots_lock aquisition during KVM_CREATE_IRQCHIP Takuya Yoshikawa
-- strict thread matches above, loose matches on Subject: below --
2010-12-15 16:45 [PATCH 3/3] KVM: Centralize irq_lock aquisition during Takuya Yoshikawa
2010-12-15 16:45 ` [PATCH 3/3] KVM: Centralize irq_lock aquisition during KVM_CREATE_IRQCHIP Takuya Yoshikawa
2010-12-15 16:41 [PATCH 1/3] KVM: Take missing slots_lock for Takuya Yoshikawa
2010-12-15 16:41 ` [PATCH 1/3] KVM: Take missing slots_lock for kvm_io_bus_unregister_dev() Takuya Yoshikawa
2010-12-16 9:12 ` Avi Kivity
2010-12-16 9:12 ` Avi Kivity
2010-12-15 16:39 [PATCH-v2 0/3] KVM: Take missing slots_lock for Takuya Yoshikawa
2010-12-15 16:39 ` [PATCH-v2 0/3] KVM: Take missing slots_lock for kvm_io_bus_unregister_dev() Takuya Yoshikawa
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