patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 7 Packages Projects Releases Wiki Activity

tracing: add feature for analysing post-mortem

Browse source 
This adds a Kconfig option for enabling post-mortem mode of SystemView.
This is useful for crashes that occur after a longer period of time.

Signed-off-by: Mattia Fiumara <mattia.fiumara@bgrid.com>
This commit is contained in:
Mattia Fiumara 2020-08-13 11:11:01 +02:00 committed by Anas Nashif
parent d795f2dbfe
commit 8244590fb8
2 changed files with 11 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
doc/guides/tracing/index.rst
View file

@ -111,7 +111,11 @@ supported in Zephyr).
To enable tracing support with `SEGGER SystemView`_ add the configuration option
:option:`CONFIG_SEGGER_SYSTEMVIEW` to your project configuration file and set
it to *y*. For example, this can be added to the
:ref:`synchronization_sample` to visualize fast switching between threads::
:ref:`synchronization_sample` to visualize fast switching between threads.
SystemView can also be used for post-mortem tracing, which can be enabled with
`CONFIG_SEGGER_SYSVIEW_POST_MORTEM_MODE`. In this mode, a debugger can
be attached after the system has crashed using ``west attach`` after which the
latest data from the internal RAM buffer can be loaded into SystemView::
CONFIG_STDOUT_CONSOLE=y
# enable to use thread names
@ -119,6 +123,8 @@ it to *y*. For example, this can be added to the
CONFIG_SEGGER_SYSTEMVIEW=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_TRACING=y
# enable for post-mortem tracing
CONFIG_SEGGER_SYSVIEW_POST_MORTEM_MODE=n
.. figure:: segger_systemview.png

4
subsys/tracing/sysview/Kconfig
View file

@ -12,4 +12,8 @@ config SEGGER_SYSVIEW_RTT_BUFFER_SIZE
depends on SEGGER_SYSTEMVIEW
default 4096
config SEGGER_SYSVIEW_POST_MORTEM_MODE
bool "Enable post-mortem mode for SystemView"
depends on SEGGER_SYSTEMVIEW
endif