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cmd: log: Add commands to list categories and drivers

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This allows users to query which categories and drivers are available on
their system. This allows them to construct filter-add commands without
(e.g.) adjusting the log format to show categories and drivers.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Sean Anderson 2020-10-27 19:55:34 -04:00 committed by Tom Rini
parent fed9c2fbc9
commit 1c593a105a
2 changed files with 38 additions and 2 deletions
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35
cmd/log.c
View File

@ -47,6 +47,37 @@ static int do_log_level(struct cmd_tbl *cmdtp, int flag, int argc,
return CMD_RET_SUCCESS;
}
static int do_log_categories(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
enum log_category_t cat;
const char *name;
for (cat = LOGC_FIRST; cat < LOGC_COUNT; cat++) {
name = log_get_cat_name(cat);
/*
* Invalid category names (e.g. <invalid> or <missing>) begin
* with '<'.
*/
if (name[0] == '<')
continue;
printf("%s\n", name);
}
return CMD_RET_SUCCESS;
}
static int do_log_drivers(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct log_device *ldev;
list_for_each_entry(ldev, &gd->log_head, sibling_node)
printf("%s\n", ldev->drv->name);
return CMD_RET_SUCCESS;
}
static int do_log_format(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
@ -123,6 +154,8 @@ static int do_log_rec(struct cmd_tbl *cmdtp, int flag, int argc,
#ifdef CONFIG_SYS_LONGHELP
static char log_help_text[] =
"level - get/set log level\n"
"categories - list log categories\n"
"drivers - list log drivers\n"
"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"
@ -134,6 +167,8 @@ static char log_help_text[] =
U_BOOT_CMD_WITH_SUBCMDS(log, "log system", log_help_text,
U_BOOT_SUBCMD_MKENT(level, 2, 1, do_log_level),
U_BOOT_SUBCMD_MKENT(categories, 1, 1, do_log_categories),
U_BOOT_SUBCMD_MKENT(drivers, 1, 1, do_log_drivers),
U_BOOT_SUBCMD_MKENT(format, 2, 1, do_log_format),
U_BOOT_SUBCMD_MKENT(rec, 7, 1, do_log_rec),
);

5
include/log.h
View File

@ -411,8 +411,9 @@ struct log_filter {
* log_get_cat_name() - Get the name of a category
*
* @cat: Category to look up
* @return category name (which may be a uclass driver name) if found, or
* "<invalid>" if invalid, or "<missing>" if not found
* @return: category name (which may be a uclass driver name) if found, or
* "<invalid>" if invalid, or "<missing>" if not found. All error
* responses begin with '<'.
*/
const char *log_get_cat_name(enum log_category_t cat);