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Commit 41076927 authored by Jim Cromie's avatar Jim Cromie Committed by Greg Kroah-Hartman
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dynamic_debug: print ram usage by ddebug tables if verbose 



Print ram usage of dynamic-debug tables and verbose section so user
knows cost of enabling CONFIG_DYNAMIC_DEBUG.  This only counts the
size of the _ddebug tables for builtins and the __verbose section that
they refer to, not those used in loadable modules.

Signed-off-by: default avatarJim Cromie <jim.cromie@gmail.com>
Acked-by: default avatarJason Baron <jbaron@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent af442399

lib/dynamic_debug.c

+11 −1
Original line number Diff line number Diff line
@@ -970,7 +970,8 @@ static int __init dynamic_debug_init(void) 
	const char *modname = NULL;

	char *cmdline;

	int ret = 0;

	int n = 0;

	int n = 0, entries = 0, modct = 0;

	int verbose_bytes = 0;



	if (__start___verbose == __stop___verbose) {

		pr_warn("_ddebug table is empty in a "
@@ -981,7 +982,12 @@ static int __init dynamic_debug_init(void) 
	modname = iter->modname;

	iter_start = iter;

	for (; iter < __stop___verbose; iter++) {

		entries++;

		verbose_bytes += strlen(iter->modname) + strlen(iter->function)

			+ strlen(iter->filename) + strlen(iter->format);



		if (strcmp(modname, iter->modname)) {

			modct++;

			ret = ddebug_add_module(iter_start, n, modname);

			if (ret)

				goto out_err;
@@ -996,6 +1002,10 @@ static int __init dynamic_debug_init(void) 
		goto out_err;



	ddebug_init_success = 1;

	vpr_info("%d modules, %d entries and %d bytes in ddebug tables,"

		" %d bytes in (readonly) verbose section\n",

		modct, entries, (int)( modct * sizeof(struct ddebug_table)),

		verbose_bytes + (int)(__stop___verbose - __start___verbose));



	/* apply ddebug_query boot param, dont unload tables on err */

	if (ddebug_setup_string[0] != '\0') {