mirror of
https://github.com/torvalds/linux
synced 2024-10-22 11:19:17 +00:00
772a7a724f
Some protocols implemented in userspace with FunctionFS might require large buffers, e.g. 64kB or more. Currently the said memory is allocated with kmalloc, which might fail should system memory be highly fragmented. On the other hand, some UDC hardware allows scatter-gather operation and this patch takes advantage of this capability: if the requested buffer is larger than PAGE_SIZE and the UDC allows scatter-gather operation, then the buffer is allocated with vmalloc and a scatterlist describing it is created and passed to usb request. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> |
||
|---|---|---|
| .. | ||
| function | ||
| legacy | ||
| udc | ||
| composite.c | ||
| config.c | ||
| configfs.c | ||
| configfs.h | ||
| epautoconf.c | ||
| functions.c | ||
| Kconfig | ||
| Makefile | ||
| u_f.c | ||
| u_f.h | ||
| u_os_desc.h | ||
| usbstring.c | ||