From: Richard Henderson <rth@twiddle.net>
To: Liu Ping Fan <qemulist@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
gleb@redhat.com, Jan Kiszka <jan.kiszka@siemens.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org, Anthony Liguori <anthony@codemonkey.ws>,
Stefan Hajnoczi <stefanha@gmail.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v7 1/7] qom: apply atomic on object's refcount
Date: Wed, 28 Nov 2012 09:16:52 -0800 [thread overview]
Message-ID: <50B64704.5040606@twiddle.net> (raw)
In-Reply-To: <1353808984-22368-2-git-send-email-qemulist@gmail.com>
On 11/24/2012 06:02 PM, Liu Ping Fan wrote:
> - obj->ref--;
>
> /* parent always holds a reference to its children */
> - if (obj->ref == 0) {
> + if (__sync_fetch_and_sub(&obj->ref, 1) == 1) {
if (__sync_sub_and_fetch(&obj->ref, 1) == 0)
r~
next prev parent reply other threads:[~2012-11-28 17:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-25 2:02 [Qemu-devel] [PATCH v7 0/7] push mmio dispatch out of big lock Liu Ping Fan
2012-11-25 2:02 ` [Qemu-devel] [PATCH v7 1/7] qom: apply atomic on object's refcount Liu Ping Fan
2012-11-28 17:16 ` Richard Henderson [this message]
2012-11-29 8:35 ` liu ping fan
2012-11-25 2:02 ` [Qemu-devel] [PATCH v7 2/7] hotplug: introduce qdev_unplug_complete() to remove device from views Liu Ping Fan
2012-11-25 2:03 ` [Qemu-devel] [PATCH v7 3/7] pci: remove pci device from mem view when unplug Liu Ping Fan
2012-11-25 2:03 ` [Qemu-devel] [PATCH v7 4/7] memory: introduce local lock for address space Liu Ping Fan
2012-11-25 2:03 ` [Qemu-devel] [PATCH v7 5/7] memory: make mmio dispatch able to be out of biglock Liu Ping Fan
2013-05-06 11:21 ` Paolo Bonzini
2013-05-06 11:25 ` Jan Kiszka
2013-05-06 11:30 ` Paolo Bonzini
2012-11-25 2:03 ` [Qemu-devel] [PATCH v7 6/7] memory: introduce tls context to trace nested mmio request issue Liu Ping Fan
2012-11-25 2:03 ` [Qemu-devel] [PATCH v7 7/7] vcpu: push mmio dispatcher out of big lock Liu Ping Fan
2012-12-06 7:28 ` [Qemu-devel] [PATCH v7 0/7] push mmio dispatch " liu ping fan
2013-05-02 16:58 ` Jan Kiszka
2013-05-02 17:14 ` Jan Kiszka
2013-05-03 7:37 ` liu ping fan
2013-05-03 8:04 ` Jan Kiszka
2013-05-04 9:47 ` Paolo Bonzini
2013-05-04 10:42 ` Jan Kiszka
2013-05-06 8:07 ` Paolo Bonzini
2013-05-06 8:40 ` Jan Kiszka
2013-05-06 10:27 ` Paolo Bonzini
2013-05-06 10:56 ` Jan Kiszka
2013-05-06 10:58 ` Paolo Bonzini
2013-05-06 11:11 ` Jan Kiszka
2013-05-06 11:28 ` Paolo Bonzini
2013-05-06 11:39 ` Jan Kiszka
2013-05-06 11:47 ` Paolo Bonzini
2013-05-06 12:06 ` Jan Kiszka
2013-05-06 13:09 ` Paolo Bonzini
2013-05-06 14:05 ` Jan Kiszka
2013-05-06 14:28 ` Paolo Bonzini
2013-05-06 1:46 ` liu ping fan
2013-05-06 1:57 ` liu ping fan
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