linux-kernel - Re: [PATCH v3 2/9] net: rds: use this_cpu

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Message-ID: <0000013af6f6652c-8e110b17-56dc-4119-899a-02a627c5485a-000000@email.amazonses.com>
Date:	Mon, 12 Nov 2012 23:31:13 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Shan Wei <shanwei88@...il.com>
cc:	venkat.x.venkatsubra@...cle.com,
	David Miller <davem@...emloft.net>, rds-devel@....oracle.com,
	NetDev <netdev@...r.kernel.org>,
	Kernel-Maillist <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/9] net: rds: use this_cpu_ptr per-cpu helper

On Mon, 12 Nov 2012, Shan Wei wrote:

> __percpu annotations in struct rds_ib_refill_cache is missing.
>
> you mean that read/write fields of struct rds_ib_cache_head
> using __this_cpu_* operation like following?
> How about it?
>
> diff --git a/net/rds/ib.h b/net/rds/ib.h
> index 8d2b3d5..7280ab8 100644
> --- a/net/rds/ib.h
> +++ b/net/rds/ib.h
> @@ -50,7 +50,7 @@ struct rds_ib_cache_head {
>  };
>
>  struct rds_ib_refill_cache {
> -	struct rds_ib_cache_head *percpu;
> +	struct rds_ib_cache_head __percpu *percpu;

That looks ok.
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