linux-kernel - RE: [PATCH 2/2] Use the new percpu interface for shared data -- version 3

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Date:	Tue, 22 May 2007 12:01:20 -0700
From:	"Yu, Fenghua" <fenghua.yu@...el.com>
To:	"Christoph Lameter" <clameter@....com>
Cc:	<akpm@...ux-foundation.org>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	<kiran@...lex86.org>, <rmk@....linux.org.uk>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/2] Use the new percpu interface for shared data -- version 3

>> -DEFINE_PER_CPU(struct tss_struct, init_tss)
>>____cacheline_internodealigned_in_smp = INIT_TSS;
>> +DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) =
INIT_TSS;

>Good work but could we call this something shorter?

>Like

>DEFINE_CPU_SHARED(...)

The PER_CPU_SHARED_ALIGNED is corresponding to
.data.per_cpu.shared_aligned section which has all shared and aligned
percpu data.

In future, another section .data.per_cpu.shared and its macro
DEFINE_PER_CPU_SHARED might be added for shared but not aligned.

BTW, DEFINE_PER_CPU_SHARED_ALIGNED is already getting shorter than
pervious version.

Thanks.

-Fenghua
-
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