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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 v3 00/12] powerpc: "paca->soft_enabled" based local atomic operation implementation
Date: Thu, 25 Aug 2016 17:15:43 +1000	[thread overview]
Message-ID: <20160825171543.7b23ec01@roar.ozlabs.ibm.com> (raw)
In-Reply-To: <1472106603-23336-1-git-send-email-maddy@linux.vnet.ibm.com>

On Thu, 25 Aug 2016 11:59:51 +0530
Madhavan Srinivasan <maddy@linux.vnet.ibm.com> wrote:

> Local atomic operations are fast and highly reentrant per CPU counters.
> Used for percpu variable updates. Local atomic operations only guarantee
> variable modification atomicity wrt the CPU which owns the data and
> these needs to be executed in a preemption safe way.

This is looking really nice. I like how you're able to specify
the mask nicely in the handler, and test the mask without adding
any instructions to fastpaths.

So far, I only have a few trivial nitpicks as you can see. I'll
apply the series and give it a more careful look tomorrow.

Thanks,
Nick

  parent reply	other threads:[~2016-08-25  7:15 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-25  6:29 [RFC PATCH v3 00/12] powerpc: "paca->soft_enabled" based local atomic operation implementation Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 01/12] powerpc: Add #defs for paca->soft_enabled flags Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 02/12] powerpc: Cleanup to use IRQ_DISABLE_MASK_* macros for paca->soft_enabled update Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 03/12] powerpc: move set_soft_enabled() Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 04/12] powerpc: Use set_soft_enabled api to update paca->soft_enabled Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 05/12] powerpc: reverse the soft_enable logic Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 06/12] powerpc: Avoid using EXCEPTION_PROLOG_1 macro in MASKABLE_* Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 07/12] powerpc: Add new _EXCEPTION_PROLOG_1 macro Madhavan Srinivasan
2016-08-25  6:29 ` [RFC PATCH v3 08/12] powerpc: Introduce new mask bit for soft_enabled Madhavan Srinivasan
2016-08-25  7:05   ` Nicholas Piggin
2016-08-26  1:27     ` Madhavan Srinivasan
2016-08-25  6:30 ` [RFC PATCH v3 09/12] powerpc: Add "bitmask" paramater to MASKABLE_* macros Madhavan Srinivasan
2016-08-25  6:30 ` [RFC PATCH v3 10/12] powerpc: Add support to mask perf interrupts Madhavan Srinivasan
2016-08-25  6:30 ` [RFC PATCH v3 11/12] powerpc: Support to replay PMIs Madhavan Srinivasan
2016-08-25  7:08   ` Nicholas Piggin
2016-08-26  1:29     ` Madhavan Srinivasan
2016-08-25  6:30 ` [RFC PATCH v3 12/12] powerpc: rewrite local_t using soft_irq Madhavan Srinivasan
2016-08-25  7:15 ` Nicholas Piggin [this message]
2016-08-26  1:31   ` [RFC PATCH v3 00/12] powerpc: "paca->soft_enabled" based local atomic operation implementation Madhavan Srinivasan

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