diff options
Diffstat (limited to 'doc/develop')
| -rw-r--r-- | doc/develop/environment.rst | 4 | ||||
| -rw-r--r-- | doc/develop/trace.rst | 11 |
2 files changed, 13 insertions, 2 deletions
diff --git a/doc/develop/environment.rst b/doc/develop/environment.rst index e1783462bb0..e46cd39d601 100644 --- a/doc/develop/environment.rst +++ b/doc/develop/environment.rst @@ -18,8 +18,8 @@ The callbacks are named and associated with a function using the U_BOOT_ENV_CALLBACK macro in your board or driver code. These callbacks are associated with variables in one of two ways. The -static list can be added to by defining CFG_ENV_CALLBACK_LIST_STATIC -in the board configuration to a string that defines a list of +static list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC +in the board defconfig via menuconfig to a string that defines a list of associations. The list must be in the following format:: entry = variable_name[:callback_name] diff --git a/doc/develop/trace.rst b/doc/develop/trace.rst index 546862020b1..d3c8628d124 100644 --- a/doc/develop/trace.rst +++ b/doc/develop/trace.rst @@ -163,6 +163,17 @@ you will see the time taken by each function shown against its exit record. u-boot-1 [000] 3.116466: funcgraph_entry: 0.063 us | memset(); u-boot-1 [000] 3.116539: funcgraph_exit: 0.143 us | } +The `trace wipe` command may be used to clear the trace buffer. It leaves +tracing in its current enable state. This command is convenient when tracing a +single command, for example: + +.. code-block:: console + + => trace pause; trace wipe + => trace resume; dhcp; trace pause + => trace stats + ... + Flame graph ----------- |