This coverts all copy in/from/to user file to use the copy template file. The copy template file is based on the memcpy.S. The first patch converts the memcpy to use the copy template as well. Overnight trinity test and 10G iperf was used to test correctness and performance. Noticeable iperf improvement (~30%) on the receive side.
V5 Changes: 1. Switch patch ordering. 2. Simplify assembly code and use fixed large tags in marco 3. Fixed indentation issue. Feng Kan (2): arm64: Change memcpy in kernel to use the copy template file arm64: copy_to-from-in_user optimization using copy template arch/arm64/lib/copy_from_user.S | 78 +++++++++------- arch/arm64/lib/copy_in_user.S | 67 ++++++++------ arch/arm64/lib/copy_template.S | 195 ++++++++++++++++++++++++++++++++++++++++ arch/arm64/lib/copy_to_user.S | 67 ++++++++------ arch/arm64/lib/memcpy.S | 179 ++++++------------------------------ 5 files changed, 341 insertions(+), 245 deletions(-) create mode 100644 arch/arm64/lib/copy_template.S -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
