From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753563Ab3FYTPt (ORCPT ); Tue, 25 Jun 2013 15:15:49 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:40804 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751195Ab3FYSd0 (ORCPT ); Tue, 25 Jun 2013 14:33:26 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jed Davis , Ingo Molnar , Will Deacon , Catalin Marinas Subject: [ 03/95] perf: arm64: Record the user-mode PC in the call chain. Date: Tue, 25 Jun 2013 11:31:50 -0700 Message-Id: <20130625182154.049293865@linuxfoundation.org> X-Mailer: git-send-email 1.8.3.rc0.20.gb99dd2e In-Reply-To: <20130625182153.605455184@linuxfoundation.org> References: <20130625182153.605455184@linuxfoundation.org> User-Agent: quilt/0.60-5.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jed Davis commit abc41254181e901ef5eda2c884ca6cd88a186b6d upstream. With this change, we no longer lose the innermost entry in the user-mode part of the call chain. See also the x86 port, which includes the ip, and the corresponding change in arch/arm. Signed-off-by: Jed Davis Acked-by: Ingo Molnar Acked-by: Will Deacon Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/perf_event.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_cal return; } + perf_callchain_store(entry, regs->pc); tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < PERF_MAX_STACK_DEPTH &&