GSOC2016: Improvements in RTEMS Tracing Framework
chrisj at rtems.org
Tue May 24 01:26:55 UTC 2016
On 23/05/2016 23:19, Isaac Gutekunst wrote:
> Hi Vivek,
> This is looking good!
> I somewhat sketchy solution for getting binary files off a target is to
> print them as intel hex, and copy them from the terminal. If the Zynq
> bsp supports networking, you could setup a TFTP server. My ugly trace
> implementation implements the lttng-live protocol for getting the CTF
> stream off the target.
> Chris, do you think it's worth going down this path yet? I think this is
> the best long term solution, as it makes RTEMS targets with networking
> support remotely traceable with babeltrace and Trace Compass.
We will have to at some stage so what ever effort is spent should help
us get a step closer. We just need monitor it does not stall the main
focus of the work. At the moment it is looking like the best solution to
getting data of the boards.
> I'm a little confused how the BSD, old style, and lwip networking stacks
> differ, and whether it would be possible to target all three easily.
This is a general area of confusion and flux.
> understanding is that the existing stack, and the BSD stack both
> integrate into the RTEMS filesystem (have file descriptors), while LWIP
> has some super ugly macros that redefine read/write/etc.
Let me document here what currently exists for LibBSD stack and the
legacy stack. Maybe Pavel can help with the LwIP stack.
Legacy Stack (stack in the RTEMS source tree):
1. Configured by tables and calls. Documented in the RTEMS Network
2. Has network file system support for NFSv2, FTP and TFTP.
1. Configured using FreeBSD rc.conf(5) format files. I have only just
added this support and it is limited but functional interface with
static configurations. I am working on this support. The tar support
changes I have recently posted and the RTEMS print changes are all
related to this support.
2. No networked file system support. This is an important issue that
needs to be resolved.
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