From: Nicholas Piggin <npiggin@gmail.com>
To: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: benh@kernel.crashing.org, mpe@ellerman.id.au, anton@samba.org,
paulus@samba.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFC PATCH 9/9] powerpc: rewrite local_t using soft_irq
Date: Tue, 26 Jul 2016 15:53:01 +1000 [thread overview]
Message-ID: <20160726155301.568771d8@roar.ozlabs.ibm.com> (raw)
In-Reply-To: <1469458342-26233-10-git-send-email-maddy@linux.vnet.ibm.com>
On Mon, 25 Jul 2016 20:22:22 +0530
Madhavan Srinivasan <maddy@linux.vnet.ibm.com> wrote:
> https://lkml.org/lkml/2008/12/16/450
>
> Modifications to Rusty's benchmark code:
> - Executed only local_t test
>
> Here are the values with the patch.
>
> Time in ns per iteration
>
> Local_t Without Patch With Patch
>
> _inc 28 8
> _add 28 8
> _read 3 3
> _add_return 28 7
>
> Tested the patch in a
> - pSeries LPAR (with perf record)
Very nice. I'd like to see these patches get in. We can
probably use the feature in other places too.
Thanks,
Nick
next prev parent reply other threads:[~2016-07-26 5:53 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-25 14:52 [RFC PATCH 0/9]powerpc: "paca->soft_enabled" based local atomic operation implementation Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 1/9] Add #defs for paca->soft_enabled flags Madhavan Srinivasan
2016-07-26 5:27 ` Nicholas Piggin
2016-07-26 6:05 ` Madhavan Srinivasan
2016-07-26 6:13 ` Nicholas Piggin
2016-07-28 13:54 ` Nicholas Piggin
2016-07-25 14:52 ` [RFC PATCH 2/9] Cleanup to use LAZY_INTERRUPT_* macros for paca->soft_enabled update Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 3/9] powerpc: move set_soft_enabled() Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 4/9] powerpc: Use set_soft_enabled api to update paca->soft_enabled Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 5/9] powerpc: reverse the soft_enable logic Madhavan Srinivasan
2016-07-26 5:31 ` Nicholas Piggin
2016-07-26 6:07 ` Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 6/9] powerpc: modify __SOFTEN_TEST to support tri-state soft_enabled flag Madhavan Srinivasan
2016-07-26 5:41 ` Nicholas Piggin
2016-07-26 6:12 ` Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 7/9] powerpc: Add support to mask perf interrupts Madhavan Srinivasan
2016-07-26 5:46 ` Nicholas Piggin
2016-07-26 6:25 ` Madhavan Srinivasan
2016-07-26 6:30 ` Nicholas Piggin
2016-07-26 6:46 ` Madhavan Srinivasan
2016-07-26 7:10 ` Nicholas Piggin
2016-07-26 7:22 ` Madhavan Srinivasan
2016-07-26 7:34 ` Nicholas Piggin
2016-07-25 14:52 ` [RFC PATCH 8/9] powerpc: Support to replay PMIs Madhavan Srinivasan
2016-07-26 5:50 ` Nicholas Piggin
2016-07-26 6:40 ` Madhavan Srinivasan
2016-07-25 14:52 ` [RFC PATCH 9/9] powerpc: rewrite local_t using soft_irq Madhavan Srinivasan
2016-07-26 5:53 ` Nicholas Piggin [this message]
2016-07-26 6:41 ` Madhavan Srinivasan
2016-07-26 12:21 ` [RFC PATCH 0/9]powerpc: "paca->soft_enabled" based local atomic operation implementation Benjamin Herrenschmidt
2016-07-26 13:42 ` Madhavan Srinivasan
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