u-boot/common/log_console.c
Simon Glass b45203004e log: Add a flag to enable log drivers
At present there is no way to disable a log driver. But the syslog driver
causes (attempted) network traffic in sandbox every time a log message
is printed, which is often.

Add a flag to enable a log driver. Adjust struct log_device to use a short
for next_filter_num so that no more memory is used for devices. Also fix
a missing line in the struct log_driver comment while here.

To maintain compatibility, enable it for all drivers for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-10-10 16:50:11 -04:00

48 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Logging support
*
* Copyright (c) 2017 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <log.h>
DECLARE_GLOBAL_DATA_PTR;
static int log_console_emit(struct log_device *ldev, struct log_rec *rec)
{
int fmt = gd->log_fmt;
/*
* The output format is designed to give someone a fighting chance of
* figuring out which field is which:
* - level is in CAPS
* - cat is lower case and ends with comma
* - file normally has a .c extension and ends with a colon
* - line is integer and ends with a -
* - function is an identifier and ends with ()
* - message has a space before it unless it is on its own
*/
if (fmt & BIT(LOGF_LEVEL))
printf("%s.", log_get_level_name(rec->level));
if (fmt & BIT(LOGF_CAT))
printf("%s,", log_get_cat_name(rec->cat));
if (fmt & BIT(LOGF_FILE))
printf("%s:", rec->file);
if (fmt & BIT(LOGF_LINE))
printf("%d-", rec->line);
if (fmt & BIT(LOGF_FUNC))
printf("%s()", rec->func);
if (fmt & BIT(LOGF_MSG))
printf("%s%s", fmt != BIT(LOGF_MSG) ? " " : "", rec->msg);
return 0;
}
LOG_DRIVER(console) = {
.name = "console",
.emit = log_console_emit,
.flags = LOGDF_ENABLE,
};