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log: allow for message continuation

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Some drivers use macro pr_cont() for continuing a message sent via printk.
Hence if we want to convert printk messaging to using the logging system,
we must support continuation of log messages too.

As pr_cont() does not provide a message level we need a means of
remembering the last log level.

With the patch a pseudo log level LOGL_CONT as well as a pseudo log
category LOGC_CONT are introduced. Using these results in the application
of the same log level and category as in the previous log message.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Heinrich Schuchardt
2020-10-17 14:31:58 +02:00
committed by Tom Rini
parent 993a06b614
commit d094a0734c
4 changed files with 38 additions and 5 deletions
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2
include/log.h
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@@ -38,6 +38,7 @@ enum log_level_t {
LOGL_FIRST = LOGL_EMERG,
LOGL_MAX = LOGL_DEBUG_IO,
LOGL_CONT = -1, /* Use same log level as in previous call */
};
/**
@@ -65,6 +66,7 @@ enum log_category_t {
LOGC_COUNT, /* Number of log categories */
LOGC_END, /* Sentinel value for a list of log categories */
LOGC_CONT = -1, /* Use same category as in previous call */
};
/* Helper to cast a uclass ID to a log category */