Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752356AbZKPGbJ (ORCPT ); Mon, 16 Nov 2009 01:31:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752003AbZKPGbI (ORCPT ); Mon, 16 Nov 2009 01:31:08 -0500 Received: from mail-qy0-f174.google.com ([209.85.221.174]:48295 "EHLO mail-qy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751775AbZKPGbF (ORCPT ); Mon, 16 Nov 2009 01:31:05 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=CvZoJd29YcNfqoW/+F3z8R0U7XTxEkaFMy0jLHb+4lDs3S99xHUwwuoADzWNfrKnv5 bWkDotzhSmPluu+AOqybFRdBBe1Ab0wCfOEvedQoau5DnfaoXuOQN5jplN9QDSIvImDI rLSRAd/gWLJEyoH8oNxg2ROxGrNbMZj3S3wXQ= MIME-Version: 1.0 In-Reply-To: <1258350595-19285-2-git-send-email-wenji.huang@oracle.com> References: <1258350595-19285-1-git-send-email-wenji.huang@oracle.com> <1258350595-19285-2-git-send-email-wenji.huang@oracle.com> Date: Mon, 16 Nov 2009 14:31:10 +0800 Message-ID: <2375c9f90911152231u31ec1826j23bc0de80db04a43@mail.gmail.com> Subject: Re: [PATCH] Kbuild: clear marker out of modpost From: =?UTF-8?Q?Am=C3=A9rico_Wang?= To: Wenji Huang Cc: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, Ingo Molnar 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-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by alpha.home.local id nAG6VQ16001575 Content-Length: 10929 Lines: 8 On Mon, Nov 16, 2009 at 1:49 PM, Wenji Huang wrote:> Remove the unnecessary functions and variables.>> Signed-off-by: Wenji Huang I am not sure about this removal, Ingo seems to have otheropinions, please check: http://lkml.org/lkml/2009/9/18/92 Adding Ingo into Cc:. Thanks. > --->  scripts/mod/modpost.c |  164 ------------------------------------------------->  scripts/mod/modpost.h |    3 ->  2 files changed, 0 insertions(+), 167 deletions(-)>> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c> index 801a16a..204e3f0 100644> --- a/scripts/mod/modpost.c> +++ b/scripts/mod/modpost.c> @@ -451,8 +451,6 @@ static int parse_elf(struct elf_info *info, const char *filename)>                        info->export_unused_gpl_sec = i;>                else if (strcmp(secname, "__ksymtab_gpl_future") == 0)>                        info->export_gpl_future_sec = i;> -               else if (strcmp(secname, "__markers_strings") == 0)> -                       info->markers_strings_sec = i;>>                if (sechdrs[i].sh_type != SHT_SYMTAB)>                        continue;> @@ -1509,62 +1507,6 @@ static void check_sec_ref(struct module *mod, const char *modname,>        }>  }>> -static void get_markers(struct elf_info *info, struct module *mod)> -{> -       const Elf_Shdr *sh = &info->sechdrs[info->markers_strings_sec];> -       const char *strings = (const char *) info->hdr + sh->sh_offset;> -       const Elf_Sym *sym, *first_sym, *last_sym;> -       size_t n;> -> -       if (!info->markers_strings_sec)> -               return;> -> -       /*> -        * First count the strings.  We look for all the symbols defined> -        * in the __markers_strings section named __mstrtab_*.  For> -        * these local names, the compiler puts a random .NNN suffix on,> -        * so the names don't correspond exactly.> -        */> -       first_sym = last_sym = NULL;> -       n = 0;> -       for (sym = info->symtab_start; sym < info->symtab_stop; sym++)> -               if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT &&> -                   sym->st_shndx == info->markers_strings_sec &&> -                   !strncmp(info->strtab + sym->st_name,> -                            "__mstrtab_", sizeof "__mstrtab_" - 1)) {> -                       if (first_sym == NULL)> -                               first_sym = sym;> -                       last_sym = sym;> -                       ++n;> -               }> -> -       if (n == 0)> -               return;> -> -       /*> -        * Now collect each name and format into a line for the output.> -        * Lines look like:> -        *      marker_name     vmlinux marker %s format %d> -        * The format string after the second \t can use whitespace.> -        */> -       mod->markers = NOFAIL(malloc(sizeof mod->markers[0] * n));> -       mod->nmarkers = n;> -> -       n = 0;> -       for (sym = first_sym; sym <= last_sym; sym++)> -               if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT &&> -                   sym->st_shndx == info->markers_strings_sec &&> -                   !strncmp(info->strtab + sym->st_name,> -                            "__mstrtab_", sizeof "__mstrtab_" - 1)) {> -                       const char *name = strings + sym->st_value;> -                       const char *fmt = strchr(name, '\0') + 1;> -                       char *line = NULL;> -                       asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt);> -                       NOFAIL(line);> -                       mod->markers[n++] = line;> -               }> -}> ->  static void read_symbols(char *modname)>  {>        const char *symname;> @@ -1620,8 +1562,6 @@ static void read_symbols(char *modname)>                get_src_version(modname, mod->srcversion,>                                sizeof(mod->srcversion)-1);>> -       get_markers(&info, mod);> ->        parse_elf_finish(&info);>>        /* Our trick to get versioning for module struct etc. - it's> @@ -1976,96 +1916,6 @@ static void write_dump(const char *fname)>        write_if_changed(&buf, fname);>  }>> -static void add_marker(struct module *mod, const char *name, const char *fmt)> -{> -       char *line = NULL;> -       asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt);> -       NOFAIL(line);> -> -       mod->markers = NOFAIL(realloc(mod->markers, ((mod->nmarkers + 1) *> -                                                    sizeof mod->markers[0])));> -       mod->markers[mod->nmarkers++] = line;> -}> -> -static void read_markers(const char *fname)> -{> -       unsigned long size, pos = 0;> -       void *file = grab_file(fname, &size);> -       char *line;> -> -       if (!file)              /* No old markers, silently ignore */> -               return;> -> -       while ((line = get_next_line(&pos, file, size))) {> -               char *marker, *modname, *fmt;> -               struct module *mod;> -> -               marker = line;> -               modname = strchr(marker, '\t');> -               if (!modname)> -                       goto fail;> -               *modname++ = '\0';> -               fmt = strchr(modname, '\t');> -               if (!fmt)> -                       goto fail;> -               *fmt++ = '\0';> -               if (*marker == '\0' || *modname == '\0')> -                       goto fail;> -> -               mod = find_module(modname);> -               if (!mod) {> -                       mod = new_module(modname);> -                       mod->skip = 1;> -               }> -               if (is_vmlinux(modname)) {> -                       have_vmlinux = 1;> -                       mod->skip = 0;> -               }> -> -               if (!mod->skip)> -                       add_marker(mod, marker, fmt);> -       }> -       release_file(file, size);> -       return;> -fail:> -       fatal("parse error in markers list file\n");> -}> -> -static int compare_strings(const void *a, const void *b)> -{> -       return strcmp(*(const char **) a, *(const char **) b);> -}> -> -static void write_markers(const char *fname)> -{> -       struct buffer buf = { };> -       struct module *mod;> -       size_t i;> -> -       for (mod = modules; mod; mod = mod->next)> -               if ((!external_module || !mod->skip) && mod->markers != NULL) {> -                       /*> -                        * Sort the strings so we can skip duplicates when> -                        * we write them out.> -                        */> -                       qsort(mod->markers, mod->nmarkers,> -                             sizeof mod->markers[0], &compare_strings);> -                       for (i = 0; i < mod->nmarkers; ++i) {> -                               char *line = mod->markers[i];> -                               buf_write(&buf, line, strlen(line));> -                               while (i + 1 < mod->nmarkers &&> -                                      !strcmp(mod->markers[i],> -                                              mod->markers[i + 1]))> -                                       free(mod->markers[i++]);> -                               free(mod->markers[i]);> -                       }> -                       free(mod->markers);> -                       mod->markers = NULL;> -               }> -> -       write_if_changed(&buf, fname);> -}> ->  struct ext_sym_list {>        struct ext_sym_list *next;>        const char *file;> @@ -2077,8 +1927,6 @@ int main(int argc, char **argv)>        struct buffer buf = { };>        char *kernel_read = NULL, *module_read = NULL;>        char *dump_write = NULL;> -       char *markers_read = NULL;> -       char *markers_write = NULL;>        int opt;>        int err;>        struct ext_sym_list *extsym_iter;> @@ -2122,12 +1970,6 @@ int main(int argc, char **argv)>                case 'w':>                        warn_unresolved = 1;>                        break;> -                       case 'M':> -                               markers_write = optarg;> -                               break;> -                       case 'K':> -                               markers_read = optarg;> -                               break;>                default:>                        exit(1);>                }> @@ -2182,11 +2024,5 @@ int main(int argc, char **argv)>                     "'make CONFIG_DEBUG_SECTION_MISMATCH=y'\n",>                     sec_mismatch_count);>> -       if (markers_read)> -               read_markers(markers_read);> -> -       if (markers_write)> -               write_markers(markers_write);> ->        return err;>  }> diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h> index 09f58e3..be987a4 100644> --- a/scripts/mod/modpost.h> +++ b/scripts/mod/modpost.h> @@ -112,8 +112,6 @@ struct module {>        int has_init;>        int has_cleanup;>        struct buffer dev_table_buf;> -       char **markers;> -       size_t nmarkers;>        char         srcversion[25];>  };>> @@ -128,7 +126,6 @@ struct elf_info {>        Elf_Section  export_gpl_sec;>        Elf_Section  export_unused_gpl_sec;>        Elf_Section  export_gpl_future_sec;> -       Elf_Section  markers_strings_sec;>        const char   *strtab;>        char         *modinfo;>        unsigned int modinfo_len;> --> 1.5.6>> --> 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/>????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?