From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754990AbZIMDGo (ORCPT ); Sat, 12 Sep 2009 23:06:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754875AbZIMDGP (ORCPT ); Sat, 12 Sep 2009 23:06:15 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:59058 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754810AbZIMDGO (ORCPT ); Sat, 12 Sep 2009 23:06:14 -0400 Message-Id: <20090913030616.992539807@goodmis.org> References: <20090913030543.204871396@goodmis.org> User-Agent: quilt/0.46-1 Date: Sat, 12 Sep 2009 23:05:45 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Peter Zijlstra , Frederic Weisbecker , Li Zefan , Jiri Olsa Subject: [PATCH 2/4] tracing/function-graph: x86_64 stack allocation cleanup Content-Disposition: inline; filename=0002-tracing-function-graph-x86_64-stack-allocation-clean.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Olsa Only 24 bytes needs to be reserved on the stack for the function graph tracer on x86_64. Signed-off-by: Jiri Olsa LKML-Reference: <20090729085837.GB4998@jolsa.lab.eng.brq.redhat.com> Signed-off-by: Steven Rostedt --- arch/x86/kernel/entry_64.S | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index c251be7..d59fe32 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -146,7 +146,7 @@ ENTRY(ftrace_graph_caller) END(ftrace_graph_caller) GLOBAL(return_to_handler) - subq $80, %rsp + subq $24, %rsp /* Save the return values */ movq %rax, (%rsp) @@ -155,10 +155,10 @@ GLOBAL(return_to_handler) call ftrace_return_to_handler - movq %rax, 72(%rsp) + movq %rax, 16(%rsp) movq 8(%rsp), %rdx movq (%rsp), %rax - addq $72, %rsp + addq $16, %rsp retq #endif -- 1.6.3.3 --