Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935635Ab3FTDHR (ORCPT ); Wed, 19 Jun 2013 23:07:17 -0400 Received: from mx2.corp.phx1.mozilla.com ([63.245.216.70]:49213 "EHLO smtp.mozilla.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935534Ab3FTDHQ (ORCPT ); Wed, 19 Jun 2013 23:07:16 -0400 Date: Wed, 19 Jun 2013 20:07:14 -0700 From: Jed Davis To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Will Deacon , Peter Zijlstra , Paul Mackerras , Ingo Molnar , Catalin Marinas , Arnaldo Carvalho de Melo Subject: [PATCH] perf: arm64: Record the user-mode PC in the call chain. Message-ID: <20130620030713.GA27428@mozilla.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-User-Agent-Host: Linux nimbostratus 3.2.0-4-amd64 x86_64 User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 990 Lines: 29 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 --- arch/arm64/kernel/perf_event.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 1e49e5eb..9ba33c4 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, return; } + perf_callchain_store(entry, regs->pc); tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < PERF_MAX_STACK_DEPTH && -- 1.7.10.4 -- 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/