linux-kernel - Re: [RFC PATCH v2, part4 31/39] mm/SH: prepare for removing num_physpages and simplify mem

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Date:	Sun, 24 Mar 2013 20:11:30 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Wen Congyang <wency@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>,
	Tang Chen <tangchen@...fujitsu.com>, linux-sh@...r.kernel.org
Subject: Re: [RFC PATCH v2, part4 31/39] mm/SH: prepare for removing num_physpages
 and simplify mem_init()

Hi Sergei,
	I'm really sorry, my patch set has screwed up so that patch 10-38 have
been send twice with different title. Be more careful next time.
	Thanks!
	Gerry

On 03/24/2013 08:06 PM, Sergei Shtylyov wrote:
> Hello.
> 
> On 24-03-2013 11:25, Jiang Liu wrote:
> 
>> Prepare for removing num_physpages and simplify mem_init().
> 
>> Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
>> Cc: Paul Mundt <lethal@...ux-sh.org>
>> Cc: Wen Congyang <wency@...fujitsu.com>
>> Cc: Tang Chen <tangchen@...fujitsu.com>
>> Cc: linux-sh@...r.kernel.org
>> Cc: linux-kernel@...r.kernel.org
>> ---
>>   arch/sh/mm/init.c |   25 ++++---------------------
>>   1 file changed, 4 insertions(+), 21 deletions(-)
> 
>> diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
>> index aecd913..3826596 100644
>> --- a/arch/sh/mm/init.c
>> +++ b/arch/sh/mm/init.c
>> @@ -407,24 +407,18 @@ unsigned int mem_init_done = 0;
>>
>>   void __init mem_init(void)
>>   {
>> -    int codesize, datasize, initsize;
>> -    int nid;
>> +    pg_data_t *pgdat;
>>
>>       iommu_init();
>>
>> -    num_physpages = 0;
>>       high_memory = NULL;
>>
>> -    for_each_online_node(nid) {
>> -        pg_data_t *pgdat = NODE_DATA(nid);
>> +    for_each_online_pgdat(pgdat) {
>>           void *node_high_memory;
>>
>> -        num_physpages += pgdat->node_present_pages;
>> -
>>           if (pgdat->node_spanned_pages)
>>               free_all_bootmem_node(pgdat);
>>
>> -
>>           node_high_memory = (void *)__va((pgdat->node_start_pfn +
>>                            pgdat->node_spanned_pages) <<
>>                            PAGE_SHIFT);
>> @@ -441,19 +435,8 @@ void __init mem_init(void)
>>
>>       vsyscall_init();
>>
>> -    codesize =  (unsigned long) &_etext - (unsigned long) &_text;
>> -    datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
>> -    initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
>> -
>> -    printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
>> -           "%dk data, %dk init)\n",
>> -        nr_free_pages() << (PAGE_SHIFT-10),
>> -        num_physpages << (PAGE_SHIFT-10),
>> -        codesize >> 10,
>> -        datasize >> 10,
>> -        initsize >> 10);
>> -
>> -    printk(KERN_INFO "virtual kernel memory layout:\n"
>> +    mem_init_print_info(NULL);
>> +    pr_info("virtual kernel memory layout:\n"
>>           "    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
>>   #ifdef CONFIG_HIGHMEM
>>           "    pkmap   : 0x%08lx - 0x%08lx   (%4ld kB)\n"
>>
> 
>    Hm, isn't patch 31 the same as patch 30?
> 
> WBR, Sergei
> 

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