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log: Allow padding of the function name

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At present when function names are logged, the output is a little hard to
read since every function is a different length. Add a way to pad the
names so that the log messages line up vertically. This doesn't work if
the function name is very long, but it makes a big difference in most
cases.

Use 20 characters as a default since this covers the vast majority of
functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-07-05 16:33:00 -06:00
parent 96f37b092f
commit 72fa1ad8d9
3 changed files with 18 additions and 8 deletions
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8
common/Kconfig
View file

@ -322,6 +322,14 @@ config LOGF_FUNC
Show the function name in log messages by default. This value can
be overridden using the 'log format' command.
config LOGF_FUNC_PAD
int "Number of characters to use for function"
default 20
help
Sets the field width to use when showing the function. Set this to
a larger value if you have lots of long function names, and want
things to line up.
config LOG_SYSLOG
bool "Log output to syslog server"
depends on NET

2
common/log_console.c
View file

@ -38,7 +38,7 @@ static int log_console_emit(struct log_device *ldev, struct log_rec *rec)
if (fmt & BIT(LOGF_LINE))
printf("%d-", rec->line);
if (fmt & BIT(LOGF_FUNC))
printf("%s()", rec->func);
printf("%*s()", CONFIG_LOGF_FUNC_PAD, rec->func);
}
if (fmt & BIT(LOGF_MSG))
printf("%s%s", add_space ? " " : "", rec->msg);

16
test/log/log_test.c
View file

@ -62,9 +62,9 @@ static int do_check_log_entries(struct unit_test_state *uts, int flags, int min,
for (i = min; i <= max; i++) {
if (flags & EXPECT_LOG)
ut_assert_nextline("do_log_run() log %d", i);
ut_assert_nextline(" do_log_run() log %d", i);
if (flags & EXPECT_DIRECT)
ut_assert_nextline("func() _log %d", i);
ut_assert_nextline(" func() _log %d", i);
if (flags & EXPECT_DEBUG) {
ut_assert_nextline("log %d", i);
ut_assert_nextline("_log %d", i);
@ -72,11 +72,12 @@ static int do_check_log_entries(struct unit_test_state *uts, int flags, int min,
}
if (flags & EXPECT_EXTRA)
for (; i <= LOGL_MAX ; i++)
ut_assert_nextline("func() _log %d", i);
ut_assert_nextline(" func() _log %d", i);
for (i = LOGL_FIRST; i < LOGL_COUNT; i++) {
if (flags & EXPECT_FORCE)
ut_assert_nextline("func() _log force %d", i);
ut_assert_nextline(" func() _log force %d",
i);
if (flags & EXPECT_DEBUG)
ut_assert_nextline("_log force %d", i);
}
@ -277,7 +278,8 @@ int do_log_test_helpers(struct unit_test_state *uts)
log_io("level %d\n", LOGL_DEBUG_IO);
for (i = LOGL_EMERG; i <= _LOG_MAX_LEVEL; i++)
ut_assert_nextline("%s() level %d", __func__, i);
ut_assert_nextline("%*s() level %d", CONFIG_LOGF_FUNC_PAD,
__func__, i);
ut_assert_console_end();
return 0;
}
@ -297,14 +299,14 @@ int do_log_test_disable(struct unit_test_state *uts)
{
ut_assertok(console_record_reset_enable());
log_err("default\n");
ut_assert_nextline("%s() default", __func__);
ut_assert_nextline("%*s() default", CONFIG_LOGF_FUNC_PAD, __func__);
ut_assertok(log_device_set_enable(LOG_GET_DRIVER(console), false));
log_err("disabled\n");
ut_assertok(log_device_set_enable(LOG_GET_DRIVER(console), true));
log_err("enabled\n");
ut_assert_nextline("%s() enabled", __func__);
ut_assert_nextline("%*s() enabled", CONFIG_LOGF_FUNC_PAD, __func__);
ut_assert_console_end();
return 0;
}