forked from luck/tmp_suning_uos_patched
6263203ed6
Add the concept of a gang to spufs as a new type of object. So far, this has no impact whatsover on scheduling, but makes it possible to add that later. A new type of object in spufs is now a spu_gang. It is created with the spu_create system call with the flags argument set to SPU_CREATE_GANG (0x2). Inside of a spu_gang, it is then possible to create spu_context objects, which until now was only possible at the root of spufs. There is a new member in struct spu_context pointing to the spu_gang it belongs to, if any. The spu_gang maintains a list of spu_context structures that are its children. This information can then be used in the scheduler in the future. There is still a bug that needs to be resolved in this basic infrastructure regarding the order in which objects are removed. When the spu_gang file descriptor is closed before the spu_context descriptors, we leak the dentry and inode for the gang. Any ideas how to cleanly solve this are appreciated. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> |
||
|---|---|---|
| .. | ||
| 4xx | ||
| 8xx | ||
| 82xx | ||
| 83xx | ||
| 85xx | ||
| 86xx | ||
| apus | ||
| cell | ||
| chrp | ||
| embedded6xx | ||
| iseries | ||
| maple | ||
| pasemi | ||
| powermac | ||
| prep | ||
| pseries | ||
| Makefile | ||