[PATCH 1/3] log: Allow LOG_DEBUG to always enable log output

[Tom Rini]

On Wed, May 06, 2020 at 08:03:55AM -0600, Simon Glass wrote:

> 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.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
>  common/log.c   |  6 +++++-
>  doc/README.log |  7 ++-----
>  include/log.h  | 16 ++++++++++++----
>  3 files changed, 19 insertions(+), 10 deletions(-)

Two levels of problems with (I believe) this patch:
https://gitlab.denx.de/u-boot/u-boot/-/jobs/94674 fails a unit test now
around logging.
https://gitlab.denx.de/u-boot/u-boot/-/jobs/94671 shows a ton of new
warnings with clang.

-- 
Tom
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