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| author | Simon Glass <sjg@chromium.org> | 2020-09-12 11:13:34 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-10-10 16:49:58 -0400 |
| commit | 52d3df7fefe30b05677db9055e68c666a071d89a (patch) | |
| tree | 949ff257975a134f8fbf923debec6f8bd013cce6 /doc | |
| parent | 0437cc415517c06c864bee5dbce3001d70b2c2cb (diff) | |
| download | u-boot-52d3df7fefe30b05677db9055e68c666a071d89a.zip u-boot-52d3df7fefe30b05677db9055e68c666a071d89a.tar.gz u-boot-52d3df7fefe30b05677db9055e68c666a071d89a.tar.bz2 | |
log: Allow LOG_DEBUG to always enable log output
At present if CONFIG_LOG enabled, putting LOG_DEBUG at the top of a file
(before log.h inclusion) causes _log() to be executed for every log()
call, regardless of the build- or run-time logging level.
However there is no guarantee that the log record will actually be
displayed. If the current log level is lower than LOGL_DEBUG then it will
not be.
Add a way to signal that the log record should always be displayed and
update log_passes_filters() to handle this.
With the new behaviour, log_debug() will always log if LOG_DEBUG is
enabled.
Move log_test_syslog_nodebug() into its own file since it cannot be made
to work where it is, with LOG_DEBUG defined.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.log | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/doc/README.log b/doc/README.log index ba83882..a313399 100644 --- a/doc/README.log +++ b/doc/README.log @@ -78,11 +78,8 @@ 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 (LOGL_DEBUG) or more. Otherwise -debug output is suppressed and will not be generated. +the top of the file, before any #includes. This overrides any log-level setting +in U-Boot, including CONFIG_LOG_DEFAULT_LEVEL, but just for that file. Convenience functions |