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log: Allow LOG_DEBUG to always enable log output

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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>
This commit is contained in:
Simon Glass
2020-09-12 11:13:34 -06:00
committed by Tom Rini
parent 0437cc4155
commit 52d3df7fef
7 changed files with 129 additions and 84 deletions
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6
common/log.c
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@@ -157,6 +157,9 @@ static bool log_passes_filters(struct log_device *ldev, struct log_rec *rec)
{
struct log_filter *filt;
if (rec->force_debug)
return true;
/* If there are no filters, filter on the default log level */
if (list_empty(&ldev->filter_head)) {
if (rec->level > gd->default_log_level)
@@ -219,7 +222,8 @@ int _log(enum log_category_t cat, enum log_level_t level, const char *file,
va_list args;
rec.cat = cat;
rec.level = level;
rec.level = level & LOGL_LEVEL_MASK;
rec.force_debug = level & LOGL_FORCE_DEBUG;
rec.file = file;
rec.line = line;
rec.func = func;