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From: Dave Hansen <haveblue@us.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Andrew Morton <akpm@osdl.org>,
	mkravetz@us.ibm.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, hch@infradead.org,
	linuxppc-dev@ozlabs.org, paulus@samba.org, kmannth@us.ibm.com,
	gone@us.ibm.com, cbe-oss-dev@ozlabs.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH] Fix sparsemem on Cell
Date: Mon, 18 Dec 2006 15:16:20 -0800	[thread overview]
Message-ID: <1166483780.8648.26.camel@localhost.localdomain> (raw)
In-Reply-To: <200612182354.47685.arnd@arndb.de>

On Mon, 2006-12-18 at 23:54 +0100, Arnd Bergmann wrote:
>  #ifndef __HAVE_ARCH_MEMMAP_INIT
>  #define memmap_init(size, nid, zone, start_pfn) \
> -	memmap_init_zone((size), (nid), (zone), (start_pfn))
> +	memmap_init_zone((size), (nid), (zone), (start_pfn), 1)
>  #endif

This is what I was thinking of.  Sometimes I find these kinds of calls a
bit annoying:

	foo(0, 1, 1, 0, 99, 22)

It only takes a minute to look up what all of the numbers do, but that
is one minute too many. :)

How about an enum, or a pair of #defines?

enum context
{
        EARLY,
        HOTPLUG
};
extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long,
                                enum call_context);
...

So, the call I quoted above would become:

	memmap_init_zone((size), (nid), (zone), (start_pfn), EARLY)

-- Dave

WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <haveblue@us.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@ozlabs.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Andrew Morton <akpm@osdl.org>,
	kmannth@us.ibm.com, linux-kernel@vger.kernel.org,
	hch@infradead.org, linux-mm@kvack.org, paulus@samba.org,
	mkravetz@us.ibm.com, gone@us.ibm.com, cbe-oss-dev@ozlabs.org
Subject: Re: [PATCH] Fix sparsemem on Cell
Date: Mon, 18 Dec 2006 15:16:20 -0800	[thread overview]
Message-ID: <1166483780.8648.26.camel@localhost.localdomain> (raw)
In-Reply-To: <200612182354.47685.arnd@arndb.de>

On Mon, 2006-12-18 at 23:54 +0100, Arnd Bergmann wrote:
>  #ifndef __HAVE_ARCH_MEMMAP_INIT
>  #define memmap_init(size, nid, zone, start_pfn) \
> -	memmap_init_zone((size), (nid), (zone), (start_pfn))
> +	memmap_init_zone((size), (nid), (zone), (start_pfn), 1)
>  #endif

This is what I was thinking of.  Sometimes I find these kinds of calls a
bit annoying:

	foo(0, 1, 1, 0, 99, 22)

It only takes a minute to look up what all of the numbers do, but that
is one minute too many. :)

How about an enum, or a pair of #defines?

enum context
{
        EARLY,
        HOTPLUG
};
extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long,
                                enum call_context);
...

So, the call I quoted above would become:

	memmap_init_zone((size), (nid), (zone), (start_pfn), EARLY)

-- Dave


WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <haveblue@us.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@ozlabs.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Andrew Morton <akpm@osdl.org>,
	kmannth@us.ibm.com, linux-kernel@vger.kernel.org,
	hch@infradead.org, linux-mm@kvack.org, paulus@samba.org,
	mkravetz@us.ibm.com, gone@us.ibm.com, cbe-oss-dev@ozlabs.org
Subject: Re: [PATCH] Fix sparsemem on Cell
Date: Mon, 18 Dec 2006 15:16:20 -0800	[thread overview]
Message-ID: <1166483780.8648.26.camel@localhost.localdomain> (raw)
In-Reply-To: <200612182354.47685.arnd@arndb.de>

On Mon, 2006-12-18 at 23:54 +0100, Arnd Bergmann wrote:
>  #ifndef __HAVE_ARCH_MEMMAP_INIT
>  #define memmap_init(size, nid, zone, start_pfn) \
> -	memmap_init_zone((size), (nid), (zone), (start_pfn))
> +	memmap_init_zone((size), (nid), (zone), (start_pfn), 1)
>  #endif

This is what I was thinking of.  Sometimes I find these kinds of calls a
bit annoying:

	foo(0, 1, 1, 0, 99, 22)

It only takes a minute to look up what all of the numbers do, but that
is one minute too many. :)

How about an enum, or a pair of #defines?

enum context
{
        EARLY,
        HOTPLUG
};
extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long,
                                enum call_context);
...

So, the call I quoted above would become:

	memmap_init_zone((size), (nid), (zone), (start_pfn), EARLY)

-- Dave

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  reply	other threads:[~2006-12-18 23:16 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-12-15 16:53 [PATCH] Fix sparsemem on Cell Dave Hansen
2006-12-15 16:53 ` Dave Hansen
2006-12-15 16:53 ` Dave Hansen
2006-12-15 17:11 ` Andy Whitcroft
2006-12-15 17:11   ` Andy Whitcroft
2006-12-15 17:11   ` Andy Whitcroft
2006-12-15 17:24   ` Dave Hansen
2006-12-15 17:24     ` Dave Hansen
2006-12-15 17:24     ` Dave Hansen
2006-12-15 19:45     ` Andrew Morton
2006-12-15 19:45       ` Andrew Morton
2006-12-15 19:45       ` Andrew Morton
2006-12-16  8:03       ` KAMEZAWA Hiroyuki
2006-12-16  8:03         ` KAMEZAWA Hiroyuki
2006-12-16  8:03         ` KAMEZAWA Hiroyuki
2006-12-18 21:13         ` Dave Hansen
2006-12-18 21:13           ` Dave Hansen
2006-12-18 21:13           ` Dave Hansen
2006-12-18 22:15           ` Christoph Hellwig
2006-12-18 22:15             ` Christoph Hellwig
2006-12-18 22:15             ` Christoph Hellwig
2006-12-18 22:54         ` Arnd Bergmann
2006-12-18 22:54           ` Arnd Bergmann
2006-12-18 22:54           ` Arnd Bergmann
2006-12-18 23:16           ` Dave Hansen [this message]
2006-12-18 23:16             ` Dave Hansen
2006-12-18 23:16             ` Dave Hansen
2006-12-19  0:16             ` KAMEZAWA Hiroyuki
2006-12-19  0:16               ` KAMEZAWA Hiroyuki
2006-12-19  0:16               ` KAMEZAWA Hiroyuki
2006-12-19  8:59             ` Arnd Bergmann
2006-12-19  8:59               ` Arnd Bergmann
2006-12-19  8:59               ` Arnd Bergmann
2006-12-19 19:34               ` Dave Hansen
2006-12-19 19:34                 ` Dave Hansen
2006-12-19 19:34                 ` Dave Hansen
2007-01-06  1:10               ` [PATCH] Fix sparsemem on Cell (take 3) Dave Hansen
2007-01-06  1:10                 ` Dave Hansen
2007-01-06  1:10                 ` Dave Hansen
2007-01-06  4:52                 ` John Rose
2007-01-06  4:52                   ` John Rose
2007-01-06  4:52                   ` John Rose
2007-01-07  8:58                   ` Dave Hansen
2007-01-07  8:58                     ` Dave Hansen
2007-01-07  8:58                     ` Dave Hansen
2007-01-07 12:07                     ` Arnd Bergmann
2007-01-07 12:07                       ` Arnd Bergmann
2007-01-07 12:07                       ` Arnd Bergmann
2007-01-08  6:31                     ` Tim Pepper
2007-01-08  6:31                       ` Tim Pepper
2007-01-08  6:47                     ` Tim Pepper
2007-01-08  6:47                       ` Tim Pepper
2007-01-08  6:47                       ` Tim Pepper
2006-12-15 17:22 ` [PATCH] Fix sparsemem on Cell Michael Buesch
2006-12-15 17:22   ` Michael Buesch
2006-12-15 17:22   ` Michael Buesch
2006-12-15 17:57   ` Dave Hansen
2006-12-15 17:57     ` Dave Hansen
2006-12-15 17:57     ` Dave Hansen
2006-12-15 20:21 ` Benjamin Herrenschmidt
2006-12-15 20:21   ` Benjamin Herrenschmidt
2006-12-15 20:21   ` Benjamin Herrenschmidt
  -- strict thread matches above, loose matches on Subject: below --
2006-12-15 17:14 Dave Hansen
2006-12-15 17:14 ` Dave Hansen
2006-12-15 17:14 ` Dave Hansen
2006-12-17 23:02 ` Arnd Bergmann
2006-12-17 23:02   ` Arnd Bergmann
2006-12-17 23:02   ` Arnd Bergmann

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