From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934844AbeEILrN (ORCPT ); Wed, 9 May 2018 07:47:13 -0400 Received: from mga14.intel.com ([192.55.52.115]:26332 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934758AbeEILp6 (ORCPT ); Wed, 9 May 2018 07:45:58 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,381,1520924400"; d="scan'208";a="54446014" From: Adrian Hunter To: Thomas Gleixner , Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Andy Lutomirski , "H. Peter Anvin" , Andi Kleen , Alexander Shishkin , Dave Hansen , Joerg Roedel , Jiri Olsa , linux-kernel@vger.kernel.org, x86@kernel.org Subject: [PATCH RFC 14/19] perf buildid-cache: kcore_copy: Calculate offset from phnum Date: Wed, 9 May 2018 14:43:43 +0300 Message-Id: <1525866228-30321-15-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1525866228-30321-1-git-send-email-adrian.hunter@intel.com> References: <1525866228-30321-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In preparation to add more program headers, calculate offset from the number of phdrs. Signed-off-by: Adrian Hunter --- tools/perf/util/symbol-elf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 3a177c245683..2e8d89d64166 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -1682,7 +1682,7 @@ int kcore_copy(const char *from_dir, const char *to_dir) struct kcore kcore; struct kcore extract; int idx = 0, err = -1; - off_t offset = page_size, sz, modules_offset = 0; + off_t offset, sz, modules_offset = 0; struct kcore_copy_info kci = { .stext = 0, }; char kcore_filename[PATH_MAX]; char extract_filename[PATH_MAX]; @@ -1710,6 +1710,10 @@ int kcore_copy(const char *from_dir, const char *to_dir) if (kcore__copy_hdr(&kcore, &extract, kci.phnum)) goto out_extract_close; + offset = gelf_fsize(extract.elf, ELF_T_EHDR, 1, EV_CURRENT) + + gelf_fsize(extract.elf, ELF_T_PHDR, kci.phnum, EV_CURRENT); + offset = round_up(offset, page_size); + if (kcore__add_phdr(&extract, idx++, offset, kci.kernel_map.addr, kci.kernel_map.len)) goto out_extract_close; -- 1.9.1