Re: [Ltib] Enabling EPOLL in kernel (PPC 2.6.25)

[Stuart Hughes]

Hi B.J.

When you say: "zcat /proc/config.gz | grep EPOLL", is this something 
you're running on the target?  it needs to be.

Also make sure you're running the newly build kernel on the target (run 
uname -a, or look at the boot up messages).

If it's not your new kernel running, make sure you ran ./ltib -p kernel 
-m scdeploy, this is what installs/copies the new image to the rootfs are.

Make sure you are tftp-ing (or otherwise copying) the right kernel.

Cross check your rootfs' notion of the kernel config by looking at 
rootfs/boot/linux.config, for example the ep93xx I have built shows:

$ grep CONFIG_EPOLL rootfs/boot/linux.config
CONFIG_EPOLL=y

Regards, Stuart

B.J. Buchalter wrote:
> Hi Folks,
>
> I managed to get the libraw1394 package integrated and compiled with 
> ltib for my target, and the test programs are put into the NFS image and 
> I am able to run them. But they fail to connect to the FireWire driver 
> because the kernel (or maybe glibc) is not supporting the EPOLL facility.
>
> There is a kernel CONFIG for EPOLL under "General". With my initial 
> kernel, it was turned off.
>
> I have since reconfigured the kernel (./ltib -c  and then select kernel 
> configuration in the LTIB menu) and enabled CONFIG_EPOLL.
>
> There are no complaints, and I see epoll.c get compiled, but it does not 
> appear that the facility is available in my compiled kernel. If I do:
>
> zcat /proc/config.gz | grep EPOLL
>
> I get:
>
> # CONFIG_EPOLL is not set
>
> even though is shows as set in the Linux menuconfig menu and it also 
> shows as set in the linux build directory .config file if I do a scbuild 
> of linux.
>
> I'm kind of stumped as to what to be looking at to resolve this.
>
> Anyone have any ideas?
>
> TIA!
>
> B.J. Buchalter
> Metric Halo
> http://www.mhlabs.com
>