This series proposes an implementation for the rpmsg framework to do deferred cleanup of buffers provided in the rx callback. The current implementation assumes that the client is done with the buffer after returning from the rx callback. In some cases where the data size is large, the client may want to avoid copying the data in the rx callback for later processing. This series proposes two new facilities for signaling that they want to hold on to a buffer after the rx callback. They are: - New API rpmsg_rx_done() to tell the rpmsg framework the client is done with the buffer - New return codes for the rx callback to signal that the client will hold onto a buffer and later call rpmsg_rx_done() This series implements the qcom_glink_native backend for these new facilities. Chris Lew (4): rpmsg: core: Add rx done hooks rpmsg: char: Add support to use rpmsg_rx_done rpmsg: glink: Try to send rx done in irq rpmsg: glink: Add support for rpmsg_rx_done drivers/rpmsg/qcom_glink_native.c | 112 ++++++++++++++++++++++++++++++-------- drivers/rpmsg/rpmsg_char.c | 50 ++++++++++++++++- drivers/rpmsg/rpmsg_core.c | 20 +++++++ drivers/rpmsg/rpmsg_internal.h | 1 + include/linux/rpmsg.h | 24 ++++++++ 5 files changed, 183 insertions(+), 24 deletions(-) -- 2.7.4
