Messages in this thread | | | Subject | Re: [PATCH 7/8] ppc64: SPU file system | From | Benjamin Herrenschmidt <> | Date | Sat, 14 May 2005 09:31:18 +1000 |
| |
> /run A stub file that lets us do ioctl. The only ioctl > method we need is the spu_run() call. spu_run suspends > the current thread from the host CPU and transfers > the flow of execution to the SPU. > The ioctl call return to the calling thread when a state > is entered that can not be handled by the kernel, e.g. > an error in the SPU code or an exit() from it. > When a signal is pending for the host CPU thread, the > ioctl is interrupted and the SPU stopped in order to > call the signal handler.
ioctl's are generally considered evil ... what about a write() method writing a command ?
Ben.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |