From: Michael Ellerman <mpe@ellerman.id.au>
To: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.orgv,
irtualization@lists.linux-foundation.org
Cc: benh@kernel.crashing.org, paulus@samba.org, peterz@infradead.org,
mingo@redhat.com, paulmck@linux.vnet.ibm.com,
waiman.long@hpe.com
Subject: Re: [PATCH RESEND v4 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention
Date: Thu, 02 Jun 2016 16:23:32 +1000 [thread overview]
Message-ID: <1464848612.19646.5.camel@ellerman.id.au> (raw)
In-Reply-To: <1464843787-4378-1-git-send-email-xinhui.pan@linux.vnet.ibm.com>
On Thu, 2016-06-02 at 13:03 +0800, Pan Xinhui wrote:
> change from v3:
> a big change in [PATCH v4 4/6] pv-qspinlock: powerpc support pv-qspinlock
> no other patch changed.
> and the patch cover letter tilte has changed as only pseries may need use pv-qspinlock, not all powerpc.
>
> 1) __pv_wait will not return until *ptr != val as Waiman gives me a tip.
> 2) support lock holder serching by storing cpu number into a hash table(implemented as an array)
> This is because lock_stealing hit too much, up to 10%~20% of all the successful lock(), and avoid
> vcpu slices bounce.
You sent v4 last night, why did you resend again?
RESEND usually means "I sent this a while ago and got no response so here it is again".
cheers
prev parent reply other threads:[~2016-06-02 6:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-02 5:03 Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 1/6] qspinlock: powerpc support qspinlock Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 2/6] powerpc: pseries/Kconfig: Add qspinlock build config Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 3/6] powerpc: lib/locks.c: Add cpu yield/wake helper function Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 4/6] pv-qspinlock: powerpc support pv-qspinlock Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 5/6] pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock Pan Xinhui
2016-06-02 5:03 ` [PATCH RESEND v4 6/6] powerpc: pseries: Add pv-qspinlock build config/make Pan Xinhui
2016-06-02 6:23 ` Michael Ellerman [this message]
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