log: don't show function by default

The name of the function emitting a log message may be of interest for a
developer but is distracting for normal users. See the example below:

    try_load_entry() Booting: Debian

Make the default format for log messages customizable. By default show
only the message text.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

6 files changed, 54 insertions, 10 deletions

diff --git a/cmd/log.c b/cmd/log.c
index 78352b2cb91..6afe6ead251 100644
--- a/cmd/log.c
+++ b/cmd/log.c
@@ -39,7 +39,7 @@ static int do_log_format(struct cmd_tbl *cmdtp, int flag, int argc,
 		const char *str = argv[1];
 
 		if (!strcmp(str, "default")) {
-			gd->log_fmt = LOGF_DEFAULT;
+			gd->log_fmt = log_get_default_format();
 		} else if (!strcmp(str, "all")) {
 			gd->log_fmt = LOGF_ALL;
 		} else {
@@ -139,7 +139,7 @@ static char log_help_text[] =
 	"log format <fmt> - set log output format. <fmt> is a string where\n"
 	"\teach letter indicates something that should be displayed:\n"
 	"\tc=category, l=level, F=file, L=line number, f=function, m=msg\n"
-	"\tor 'default', equivalent to 'fm', or 'all' for all\n"
+	"\tor 'default', or 'all' for all\n"
 	"log rec <category> <level> <file> <line> <func> <message> - "
 		"output a log record"
 	;
diff --git a/common/Kconfig b/common/Kconfig
index 7872bc46cd2..67b3818fdef 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -699,6 +699,24 @@ config LOG_CONSOLE
 	  log message is shown - other details like level, category, file and
 	  line number are omitted.
 
+config LOGF_FILE
+	bool "Show source file name in log messages by default"
+	help
+	  Show the source file name in log messages by default. This value
+	  can be overridden using the 'log format' command.
+
+config LOGF_LINE
+	bool "Show source line number in log messages by default"
+	help
+	  Show the source line number in log messages by default. This value
+	  can be overridden using the 'log format' command.
+
+config LOGF_FUNC
+	bool "Show function name in log messages by default"
+	help
+	  Show the function name in log messages by default. This value can
+	  be overridden using the 'log format' command.
+
 config LOG_SYSLOG
 	bool "Log output to syslog server"
 	depends on NET
diff --git a/common/log.c b/common/log.c
index d7ce74f6b31..734d26de4af 100644
--- a/common/log.c
+++ b/common/log.c
@@ -321,7 +321,7 @@ int log_init(void)
 	gd->flags |= GD_FLG_LOG_READY;
 	if (!gd->default_log_level)
 		gd->default_log_level = CONFIG_LOG_DEFAULT_LEVEL;
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
diff --git a/include/log.h b/include/log.h
index df65398c04e..2859ce1f2e7 100644
--- a/include/log.h
+++ b/include/log.h
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <linker_lists.h>
 #include <dm/uclass-id.h>
+#include <linux/bitops.h>
 #include <linux/list.h>
 
 struct cmd_tbl;
@@ -411,7 +412,6 @@ enum log_fmt {
 	LOGF_MSG,
 
 	LOGF_COUNT,
-	LOGF_DEFAULT = (1 << LOGF_FUNC) | (1 << LOGF_MSG),
 	LOGF_ALL = 0x3f,
 };
 
@@ -460,4 +460,20 @@ static inline int log_init(void)
 }
 #endif
 
+/**
+ * log_get_default_format() - get default log format
+ *
+ * The default log format is configurable via
+ * CONFIG_LOGF_FILE, CONFIG_LOGF_LINE, CONFIG_LOGF_FUNC.
+ *
+ * Return:	default log format
+ */
+static inline int log_get_default_format(void)
+{
+	return BIT(LOGF_MSG) |
+	       (IS_ENABLED(CONFIG_LOGF_FILE) ? BIT(LOGF_FILE) : 0) |
+	       (IS_ENABLED(CONFIG_LOGF_LINE) ? BIT(LOGF_LINE) : 0) |
+	       (IS_ENABLED(CONFIG_LOGF_FUNC) ? BIT(LOGF_FUNC) : 0);
+}
+
 #endif
diff --git a/test/log/syslog_test.c b/test/log/syslog_test.c
index 26536ebca79..120a8b2537b 100644
--- a/test/log/syslog_test.c
+++ b/test/log/syslog_test.c
@@ -21,6 +21,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define LOGF_TEST (BIT(LOGF_FUNC) | BIT(LOGF_MSG))
+
 /**
  * struct sb_log_env - private data for sandbox ethernet driver
  *
@@ -102,7 +104,7 @@ static int log_test_syslog_err(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_INFO;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -116,6 +118,7 @@ static int log_test_syslog_err(struct unit_test_state *uts)
 	/* Check that the callback function was called */
 	sandbox_eth_set_tx_handler(0, NULL);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
@@ -132,7 +135,7 @@ static int log_test_syslog_warning(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_INFO;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -147,6 +150,7 @@ static int log_test_syslog_warning(struct unit_test_state *uts)
 	/* Check that the callback function was called */
 	ut_assertnull(env.expected);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
@@ -163,7 +167,7 @@ static int log_test_syslog_notice(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_INFO;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -178,6 +182,7 @@ static int log_test_syslog_notice(struct unit_test_state *uts)
 	/* Check that the callback function was called */
 	ut_assertnull(env.expected);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
@@ -194,7 +199,7 @@ static int log_test_syslog_info(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_INFO;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -209,6 +214,7 @@ static int log_test_syslog_info(struct unit_test_state *uts)
 	/* Check that the callback function was called */
 	ut_assertnull(env.expected);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
@@ -225,7 +231,7 @@ static int log_test_syslog_debug(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_DEBUG;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -240,6 +246,7 @@ static int log_test_syslog_debug(struct unit_test_state *uts)
 	/* Check that the callback function was called */
 	ut_assertnull(env.expected);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
@@ -259,7 +266,7 @@ static int log_test_syslog_nodebug(struct unit_test_state *uts)
 	int old_log_level = gd->default_log_level;
 	struct sb_log_env env;
 
-	gd->log_fmt = LOGF_DEFAULT;
+	gd->log_fmt = LOGF_TEST;
 	gd->default_log_level = LOGL_INFO;
 	env_set("ethact", "eth@10002000");
 	env_set("log_hostname", "sandbox");
@@ -274,6 +281,7 @@ static int log_test_syslog_nodebug(struct unit_test_state *uts)
 	/* Check that the callback function was not called */
 	ut_assertnonnull(env.expected);
 	gd->default_log_level = old_log_level;
+	gd->log_fmt = log_get_default_format();
 
 	return 0;
 }
diff --git a/test/py/tests/test_log.py b/test/py/tests/test_log.py
index 75325fad61a..ddc28f19ee8 100644
--- a/test/py/tests/test_log.py
+++ b/test/py/tests/test_log.py
@@ -39,6 +39,8 @@ def test_log(u_boot_console):
         Returns:
             iterator containing the lines output from the command
         """
+        output = u_boot_console.run_command('log format fm')
+        assert output == ''
         with cons.log.section('basic'):
            output = u_boot_console.run_command('log test %d' % testnum)
         split = output.replace('\r', '').splitlines()