From 4107692760db8160a65347f7bb2fa7fa7bf9b0d1 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Fri, 27 Apr 2012 14:30:39 -0600 Subject: 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: Jim Cromie Acked-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- lib/dynamic_debug.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'lib/dynamic_debug.c') diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 66e0ec4d21f..76da6aa66ce 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -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') { -- cgit v1.2.3