Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755194Ab3HWIkw (ORCPT ); Fri, 23 Aug 2013 04:40:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:17484 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755137Ab3HWIj6 (ORCPT ); Fri, 23 Aug 2013 04:39:58 -0400 From: Frantisek Hrbata To: linux-kernel@vger.kernel.org Cc: jstancek@redhat.com, keescook@chromium.org, peter.oberparleiter@de.ibm.com, rusty@rustcorp.com.au, linux-arch@vger.kernel.org, arnd@arndb.de, mgahagan@redhat.com, agospoda@redhat.com Subject: [RFC PATCH 4/4] kernel: add support for init_array constructors Date: Fri, 23 Aug 2013 10:39:36 +0200 Message-Id: <1377247176-13537-5-git-send-email-fhrbata@redhat.com> In-Reply-To: <1377247176-13537-1-git-send-email-fhrbata@redhat.com> References: <1377247176-13537-1-git-send-email-fhrbata@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2099 Lines: 67 This adds the .init_array section as yet another section with constructors. This is needed because gcc is adding __gcov_init calls to .init_array. Signed-off-by: Frantisek Hrbata --- include/asm-generic/vmlinux.lds.h | 1 + include/linux/module.h | 2 ++ kernel/module.c | 6 ++++++ 3 files changed, 9 insertions(+) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 69732d2..c55d8d9 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -468,6 +468,7 @@ #define KERNEL_CTORS() . = ALIGN(8); \ VMLINUX_SYMBOL(__ctors_start) = .; \ *(.ctors) \ + *(.init_array) \ VMLINUX_SYMBOL(__ctors_end) = .; #else #define KERNEL_CTORS() diff --git a/include/linux/module.h b/include/linux/module.h index 46f1ea0..89ff829 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -374,6 +374,8 @@ struct module /* Constructor functions. */ ctor_fn_t *ctors; unsigned int num_ctors; + ctor_fn_t *init_array; + unsigned int num_init_array; #endif }; #ifndef MODULE_ARCH_INIT diff --git a/kernel/module.c b/kernel/module.c index 2069158..581ae89 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2760,6 +2760,9 @@ static void find_module_sections(struct module *mod, struct load_info *info) #ifdef CONFIG_CONSTRUCTORS mod->ctors = section_objs(info, ".ctors", sizeof(*mod->ctors), &mod->num_ctors); + mod->init_array = section_objs(info, ".init_array", + sizeof(*mod->init_array), + &mod->num_init_array); #endif #ifdef CONFIG_TRACEPOINTS @@ -3024,6 +3027,9 @@ static void do_mod_ctors(struct module *mod) for (i = 0; i < mod->num_ctors; i++) mod->ctors[i](); + + for (i = 0; i < mod->num_init_array; i++) + mod->init_array[i](); #endif } -- 1.8.3.1 -- 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/