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

From: Greg KH
Date: Sat Apr 04 2015 - 04:26:57 EST

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?


greg k-h
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at