Hi BIn,
On Wed, 13 Feb 2019 at 10:36, Bin Meng bmeng.cn@gmail.com wrote:
Hi Simon,
On Tue, Jan 22, 2019 at 9:14 AM Simon Glass sjg@chromium.org wrote:
At present it is possible to '#define DEBUG' at the top of a file which causes all debug() statements in that file to become active. There is currently no equivalent with logging, but this is a useful function.
Add a LOG_DEBUG define along with documentation.
Signed-off-by: Simon Glass sjg@chromium.org
doc/README.log | 14 ++++++++++++++ include/log.h | 7 ++++++- 2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/doc/README.log b/doc/README.log index 96bc9523ef..f8922af764 100644 --- a/doc/README.log +++ b/doc/README.log @@ -69,6 +69,20 @@ If CONFIG_LOG is not set, then no logging will be available. The above have SPL versions also, e.g. CONFIG_SPL_MAX_LOG_LEVEL.
+Temporary logging within a single file +--------------------------------------
+Sometimes it is useful to turn on logging just in one file. You can use this:
- #define LOG_DEBUG
+to enable building in of all logging statements in a single file. Put it at +the top of the file, before any #includes.
+To actually get U-Boot to output this you need to also set the default logging +level - e.g. set CONFIG_LOG_DEFAULT_LEVEL to 7 or more.
Why should CONFIG_LOG_DEFAULT_LEVEL be 7 or more?
I'll add a comment about that. I suspect there is a way to avoid this but so far I have not figured it out.
[..]
Regards, Simon