From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757017Ab3H3N3l (ORCPT ); Fri, 30 Aug 2013 09:29:41 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:17339 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756712Ab3H3NYH (ORCPT ); Fri, 30 Aug 2013 09:24:07 -0400 X-Authority-Analysis: v=2.0 cv=fJG7LOme c=1 sm=0 a=Sro2XwOs0tJUSHxCKfOySw==:17 a=Drc5e87SC40A:10 a=Ciwy3NGCPMMA:10 a=NcZZzMeBTngA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=KGjhK52YXX0A:10 a=DDoHWo0lehQA:10 a=20KFwNOVAAAA:8 a=VnNF1IyMAAAA:8 a=_whD2MN1g3_tR11PCDsA:9 a=jeBq3FmKZ4MA:10 a=jEp0ucaQiEUA:10 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Message-Id: <20130830132404.252080304@goodmis.org> User-Agent: quilt/0.60-1 Date: Fri, 30 Aug 2013 09:02:08 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Peter Zijlstra , Frederic Weisbecker , "Paul E. McKenney" , Jiri Olsa , Dave Jones Subject: [RFC][PATCH 3/8] ftrace: Set ftrace internal function tracing RCU safe References: <20130830130205.504335754@goodmis.org> Content-Disposition: inline; filename=0003-ftrace-Set-ftrace-internal-function-tracing-RCU-safe.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Steven Rostedt (Red Hat)" Since none of the internal ftrace function tracing uses RCU in their callbacks, it is OK to set the global_ops (the one that they all use) to RCU safe. Cc: Jiri Olsa Cc: Paul E. McKenney Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index dc11951..3761663 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1146,7 +1146,9 @@ static struct ftrace_ops global_ops = { .func = ftrace_stub, .notrace_hash = EMPTY_HASH, .filter_hash = EMPTY_HASH, - .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_INITIALIZED, + .flags = FTRACE_OPS_FL_RECURSION_SAFE | + FTRACE_OPS_FL_INITIALIZED | + FTRACE_OPS_FL_RCU_SAFE, INIT_REGEX_LOCK(global_ops) }; -- 1.7.10.4