Linux kernel development work - see feature branches https://git.zx2c4.com/linux-dev/atom/tools/virtio/virtio-trace/README?h=master 2012-09-28T05:35:13Z 2012-09-28T05:35:13Z Yoshihiro YUNOMAE yoshihiro.yunomae.ez@hitachi.com 2012-08-09T12:31:30Z urn:sha1:108fc82596e3b66b819df9d28c1ebbc9ab5de14c This patch adds a user tool, "trace agent" for sending trace data of a guest to a Host in low overhead. This agent has the following functions: - splice a page of ring-buffer to read_pipe without memory copying - splice the page from write_pipe to virtio-console without memory copying - write trace data to stdout by using -o option - controlled by start/stop orders from a Host Changes in v2: - Cleanup (change fprintf() to pr_err() and an include guard) Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Acked-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>