Re: [LTP] [PATCH v3 1/4] hugemmap01: auto mount the temporary dir for testing

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 02/08/2012 04:31 PM, Caspar Zhang wrote:

> On 02/08/2012 04:21 PM, Wanlong Gao wrote:
>> -static void setup(void)
>> +void setup(void)
>>  {
>> -	char mypid[40];
>> -
>> -	sprintf(mypid, "/%d", getpid());
>> -	TEMPFILE = strcat(mypid, TEMPFILE);
>> -	TEMPFILE = strcat(Hopt, TEMPFILE);
>> -
>> -	tst_sig(FORK, DEF_HANDLER, cleanup);
>> -
>>  	TEST_PAUSE;
>> -
>> +	tst_require_root(NULL);
>> +	if (mount("none", Hopt, "hugetlbfs", 0, NULL) < 0)
>> +		tst_brkm(TBROK|TERRNO, NULL,
>> +			 "mount failed on %s", Hopt);
>> +
>> +	set_sys_tune("nr_hugepages", hugepages, 1);
>> +	snprintf(TEMPFILE, sizeof(TEMPFILE), "%s/mmapfile%d",
>> +		 Hopt, getpid());
>>  }
>>  
>> -static void cleanup(void)
>> +void cleanup(void)
>>  {
>>  	TEST_CLEANUP;
>>  
>>  	unlink(TEMPFILE);
>>  
>> +	umount(Hopt);
>> +	tst_rmdir();
>>  }
> 
> Hi, I just have another concern, that you might want to keep the initial
> value of nr_hugepages and restore it once the test is done.


as set_sys_tune defined in mem lib, this restore work should be done there,
too.

right?

Thanks
-Wanlong Gao

> 
> Thanks,
> Caspar
> 



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