Hi Heiko,
2015-07-08 14:10 GMT+09:00 Heiko Schocher hs@denx.de:
Hello Masahiro,
Am 08.07.2015 um 06:29 schrieb Masahiro Yamada:
It does not seem efficient to always return cache-aligned memory. Return aligned memory only when GFP_DMA flag is given.
My main motivation for this commit is to refactor device_probe() and device_free() in the next commit. DM_FLAG_ALLOC_PRIV_DMA should be handled more easily.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com
include/linux/compat.h | 1 + lib/linux_compat.c | 5 ++++- 2 files changed, 5 insertions(+), 1 deletion(-)
Hmm... I think there are a lot of places in code, where implicit is supposed, that kmalloc returns aligned memory ... so this patch needs testing (USB, DFU and ethernet coming in my mind)
Right.
I wonder why cache-alignment is enabled by default. Anybody who knows if it is also true for Linux?