Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756679AbbKRSp3 (ORCPT ); Wed, 18 Nov 2015 13:45:29 -0500 Received: from mail-wm0-f53.google.com ([74.125.82.53]:36768 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755224AbbKRSp1 (ORCPT ); Wed, 18 Nov 2015 13:45:27 -0500 MIME-Version: 1.0 Date: Wed, 18 Nov 2015 11:45:26 -0700 Message-ID: Subject: Linux 4.3 kallsyms_lookup_name not returning per_cpu symbol values From: Jeffrey Merkey To: linux-kernel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1710 Lines: 56 kallsyms_lookup_name is not returning per_cpu symbols when called. The symbols show up when you run something with the kallsyms_iter struct but not through the regular interface. I have looked through the code and I am not able to determine with certainty if its designed this way or just busted. Any help with this would be appreciated. The following code does display the per_cpu symbols, they just don't seem to show up when called from kallsyms_lookup_name. struct kallsym_iter mdb_iter; int mdb_kallsyms(char *str, int (*print)(char *s, ...)) { register loff_t pos = 0; register struct kallsym_iter *iter = &mdb_iter; if (!print) return 0; // set to beginning of the kallsyms list reset_iter(iter, 0); while (1) { // search the kallsyms list if (!update_iter(iter, pos++)) break; if (!iter->name[0]) continue; // if an exclusion search was specified, skip non-matching entries if (str && *str && !strstr(iter->name, str)) continue; if (iter->module_name[0]) { if (print("%0*lx %c %s [%s]\n", (int)(2*sizeof(void*)), iter->value, iter->type, iter->name, iter->module_name)) return 1; } else { if (print("%0*lx %c %s\n", (int)(2*sizeof(void*)), iter->value, iter->type, iter->name)) return 1; } } return 0; } EXPORT_SYMBOL_GPL(mdb_kallsyms); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/