Re: samples: kdbus: kdbus-workers: Define dummy prime_new()

From: Chen Gang
Date: Sat Apr 04 2015 - 18:25:34 EST


On 4/4/15 16:26, Greg KH wrote:
> On Sat, Apr 04, 2015 at 06:17:23AM +0800, Chen Gang wrote:
>> Quite a few of architures (e.g. blackfin, cris, frv ...) do not support
>> memfd_create system call which is used in prime_new(). So define a dummy
>> one.
>>
>> The related error (with allmodconfig under blackfin):
>>
>> CC [M] samples/kfifo/inttype-example.o
>> samples/kdbus/kdbus-workers.c: In function âprime_newâ:
>> samples/kdbus/kdbus-workers.c:930:18: error: â__NR_memfd_createâ undeclared (first use in this function)
>> p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC);
>> ^
>> samples/kdbus/kdbus-workers.c:930:18: note: each undeclared identifier is reported only once for each function it appears in
>> make[2]: *** [samples/kdbus/kdbus-workers] Error 1
>>
>> Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
>> ---
>> samples/kdbus/kdbus-workers.c | 11 +++++++++++
>> 1 file changed, 11 insertions(+)
>
> As Richard said, please hook up these syscalls to those architectures.
> Don't you want to use the feature there? Why hasn't it been added yet?
>

OK, thanks. I shall try to finish blackfin within this month. And try
the other archs within next month.

Thanks.
--
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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