IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
csum_partial_copy_generic() does the same as copy_tofrom_user and also
calculates the checksum during the copy. Unlike copy_tofrom_user(),
the existing version of csum_partial_copy_generic() doesn't take
benefit of the cache.
This patch is a rewrite of csum_partial_copy_generic() based on
copy_tofrom_user().
The previous version of csum_partial_copy_generic() was handling
errors. Now we have the checksum wrapper functions to handle the error
case like in powerpc64 so we can make the error case simple:
just return -EFAULT.
copy_tofrom_user() only has r12 available => we use it for the
checksum r7 and r8 which contains pointers to error feedback are used,
so we stack them.
On a TCP benchmark using socklib on the loopback interface on which
checksum offload and scatter/gather have been deactivated, we get
about 20% performance increase.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
7aef413656