Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756550Ab3C2SSH (ORCPT ); Fri, 29 Mar 2013 14:18:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:4800 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753503Ab3C2SSF (ORCPT ); Fri, 29 Mar 2013 14:18:05 -0400 Date: Fri, 29 Mar 2013 19:15:40 +0100 From: Oleg Nesterov To: Ananth N Mavinakayanahalli , Srikar Dronamraju , Steven Rostedt Cc: Anton Arapov , Frederic Weisbecker , Ingo Molnar , linux-kernel@vger.kernel.org Subject: [PATCH 1/4] uprobes/tracing: Kill the pointless task_pt_regs() calls Message-ID: <20130329181540.GA20687@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130329181520.GA20670@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1416 Lines: 38 uprobe_trace_func() and uprobe_perf_func() do not need task_pt_regs(), we already have "struct pt_regs *regs". Signed-off-by: Oleg Nesterov --- kernel/trace/trace_uprobe.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 8dad2a9..af5b773 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -507,7 +507,7 @@ static int uprobe_trace_func(struct trace_uprobe *tu, struct pt_regs *regs) return 0; entry = ring_buffer_event_data(event); - entry->ip = instruction_pointer(task_pt_regs(current)); + entry->ip = instruction_pointer(regs); data = (u8 *)&entry[1]; for (i = 0; i < tu->nr_args; i++) call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset); @@ -777,7 +777,7 @@ static int uprobe_perf_func(struct trace_uprobe *tu, struct pt_regs *regs) if (!entry) goto out; - entry->ip = instruction_pointer(task_pt_regs(current)); + entry->ip = instruction_pointer(regs); data = (u8 *)&entry[1]; for (i = 0; i < tu->nr_args; i++) call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset); -- 1.5.5.1 -- 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/