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From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
Cc: linux-arch@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
	Boqun Feng <boqun.feng@gmail.com>,
	linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	Ingo Molnar <mingo@redhat.com>, Waiman Long <longman@redhat.com>,
	Michal Suchánek <msuchanek@suse.de>,
	Will Deacon <will@kernel.org>
Subject: Re: [PATCH v4 0/6] powerpc: queued spinlocks and rwlocks
Date: Mon, 27 Jul 2020 17:26:50 +1000 (AEST)	[thread overview]
Message-ID: <159583478430.602200.10525784837560757158.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20200724131423.1362108-1-npiggin@gmail.com>

On Fri, 24 Jul 2020 23:14:17 +1000, Nicholas Piggin wrote:
> Updated with everybody's feedback (thanks all), and more performance
> results.
> 
> What I've found is I might have been measuring the worst load point for
> the paravirt case, and by looking at a range of loads it's clear that
> queued spinlocks are overall better even on PV, doubly so when you look
> at the generally much improved worst case latencies.
> 
> [...]

Applied to powerpc/next.

[1/6] powerpc/pseries: Move some PAPR paravirt functions to their own file
      https://git.kernel.org/powerpc/c/20d444d06f97504d165b08558678b4737dcefb02
[2/6] powerpc: Move spinlock implementation to simple_spinlock
      https://git.kernel.org/powerpc/c/12d0b9d6c843e7dbe739ebefcf16c7e4a45e4e78
[3/6] powerpc/64s: Implement queued spinlocks and rwlocks
      https://git.kernel.org/powerpc/c/aa65ff6b18e0366db1790609956a4ac7308c5668
[4/6] powerpc/pseries: Implement paravirt qspinlocks for SPLPAR
      https://git.kernel.org/powerpc/c/20c0e8269e9d515e677670902c7e1cc0209d6ad9
[5/6] powerpc/qspinlock: Optimised atomic_try_cmpxchg_lock() that adds the lock hint
      https://git.kernel.org/powerpc/c/2f6560e652dfdbdb59df28b45a3458bf36d3c580
[6/6] powerpc: Implement smp_cond_load_relaxed()
      https://git.kernel.org/powerpc/c/49a7d46a06c30c7beabbf9d1a8ea1de0f9e4fdfe

cheers

      parent reply	other threads:[~2020-07-27  7:44 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-24 13:14 [PATCH v4 0/6] powerpc: queued spinlocks and rwlocks Nicholas Piggin
2020-07-24 13:14 ` Nicholas Piggin
2020-07-24 13:14 ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 1/6] powerpc/pseries: move some PAPR paravirt functions to their own file Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 2/6] powerpc: move spinlock implementation to simple_spinlock Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 3/6] powerpc/64s: implement queued spinlocks and rwlocks Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 4/6] powerpc/pseries: implement paravirt qspinlocks for SPLPAR Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 5/6] powerpc/qspinlock: optimised atomic_try_cmpxchg_lock that adds the lock hint Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14 ` [PATCH v4 6/6] powerpc: implement smp_cond_load_relaxed Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 13:14   ` Nicholas Piggin
2020-07-24 21:10   ` Waiman Long
2020-07-24 21:10     ` Waiman Long
2020-07-24 21:10     ` Waiman Long
2020-07-24 21:11 ` [PATCH v4 0/6] powerpc: queued spinlocks and rwlocks Waiman Long
2020-07-24 21:11   ` Waiman Long
2020-07-24 21:11   ` Waiman Long
2020-07-27  7:26 ` Michael Ellerman [this message]

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