(2013/08/22 17:20), Yasuaki Ishimatsu wrote:
> (2013/08/21 2:13), Seth Jennings wrote:
>> Right now memory_dev_init() maintains the memory block pointer
>> between iterations of add_memory_section(). This is nasty.
>>
>> This patch refactors add_memory_section() to become add_memory_block().
>> The refactoring pulls the section scanning out of memory_dev_init()
>> and simplifies the signature.
>>
>> Signed-off-by: Seth Jennings <sjenn...@linux.vnet.ibm.com>
>> ---
>> drivers/base/memory.c | 48
>> +++++++++++++++++++++---------------------------
>> 1 file changed, 21 insertions(+), 27 deletions(-)
>>
>> diff --git a/drivers/base/memory.c b/drivers/base/memory.c
>> index 7d9d3bc..021283a 100644
>> --- a/drivers/base/memory.c
>> +++ b/drivers/base/memory.c
>> @@ -602,32 +602,31 @@ static int init_memory_block(struct memory_block
>> **memory,
>> return ret;
>> }
>>
>> -static int add_memory_section(struct mem_section *section,
>> - struct memory_block **mem_p)
>> +static int add_memory_block(int base_section_nr)
>> {
>> - struct memory_block *mem = NULL;
>> - int scn_nr = __section_nr(section);
>> - int ret = 0;
>> -
>> - if (mem_p && *mem_p) {
>> - if (scn_nr >= (*mem_p)->start_section_nr &&
>> - scn_nr <= (*mem_p)->end_section_nr) {
>> - mem = *mem_p;
>> - }
>> - }
>> + struct memory_block *mem;
>> + int i, ret, section_count = 0, section_nr;
>>
>> - if (mem)
>> - mem->section_count++;
>> - else {
>> - ret = init_memory_block(&mem, section, MEM_ONLINE);
>> - /* store memory_block pointer for next loop */
>> - if (!ret && mem_p)
>> - *mem_p = mem;
>> + for (i = base_section_nr;
>> + (i < base_section_nr + sections_per_block) && i < NR_MEM_SECTIONS;
>> + i++) {
>> + if (!present_section_nr(i))
>> + continue;
>> + if (section_count == 0)
>> + section_nr = i;
>> + section_count++;
>> }
>>
>> - return ret;
>> + if (section_count == 0)
>> + return 0;
>> + ret = init_memory_block(&mem, __nr_to_section(section_nr), MEM_ONLINE);
>> + if (ret)
>> + return ret;
>> + mem->section_count = section_count;
>> + return 0;
>> }
>>
>> +
>> /*
>> * need an interface for the VM to add new memory regions,
>> * but without onlining it.
>> @@ -733,7 +732,6 @@ int __init memory_dev_init(void)
>> int ret;
>> int err;
>> unsigned long block_sz;
>> - struct memory_block *mem = NULL;
>>
>> ret = subsys_system_register(&memory_subsys, memory_root_attr_groups);
>> if (ret)
>> @@ -747,12 +745,8 @@ int __init memory_dev_init(void)
>> * during boot and have been initialized
>> */
>> mutex_lock(&mem_sysfs_mutex);
>> - for (i = 0; i < NR_MEM_SECTIONS; i++) {
>> - if (!present_section_nr(i))
>> - continue;
>> - /* don't need to reuse memory_block if only one per block */
>> - err = add_memory_section(__nr_to_section(i),
>> - (sections_per_block == 1) ? NULL : &mem);
>> + for (i = 0; i < NR_MEM_SECTIONS; i += sections_per_block) {
>
> Why do you remove present_setcion_nr() check?
Sorry for the noise. I understood.
The check was moved into add_memory_section(). So it was removed.
Thanks,
Yasuaki Ishimatsu
>
>> + err = add_memory_block(i);
>> if (!ret)
>
> Thanks,
> Yasuaki Ishimatasu
>
>> ret = err;
>> }
>>
>
>
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