From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966100AbcA1Oxy (ORCPT ); Thu, 28 Jan 2016 09:53:54 -0500 Received: from smtprelay0092.hostedemail.com ([216.40.44.92]:52786 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965230AbcA1Oxw (ORCPT ); Thu, 28 Jan 2016 09:53:52 -0500 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2198:2199:2393:2553:2559:2562:3138:3139:3140:3141:3142:3352:3622:3865:3866:3867:3871:5007:6261:7875:10004:10400:10848:10967:11026:11232:11473:11658:11914:12043:12438:12517:12519:12740:13069:13255:13311:13357:14659:21080:30012:30054:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:5,LUA_SUMMARY:none X-HE-Tag: band52_78dcadec56507 X-Filterd-Recvd-Size: 2326 Date: Thu, 28 Jan 2016 09:53:49 -0500 From: Steven Rostedt To: Alexander Potapenko Cc: adech.fo@gmail.com, cl@linux.com, dvyukov@google.com, akpm@linux-foundation.org, ryabinin.a.a@gmail.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v1 4/8] arch, ftrace: For KASAN put hard/soft IRQ entries into separate sections Message-ID: <20160128095349.6f771f14@gandalf.local.home> In-Reply-To: <99939a92dd93dc5856c4ec7bf32dbe0035cdc689.1453918525.git.glider@google.com> References: <99939a92dd93dc5856c4ec7bf32dbe0035cdc689.1453918525.git.glider@google.com> X-Mailer: Claws Mail 3.13.1 (GTK+ 2.24.29; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 27 Jan 2016 19:25:09 +0100 Alexander Potapenko wrote: > --- a/include/linux/ftrace.h > +++ b/include/linux/ftrace.h > @@ -762,6 +762,26 @@ struct ftrace_graph_ret { > typedef void (*trace_func_graph_ret_t)(struct ftrace_graph_ret *); /* return */ > typedef int (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */ > > +#if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) > +/* > + * We want to know which function is an entrypoint of a hardirq. > + */ > +#define __irq_entry __attribute__((__section__(".irqentry.text"))) > +#define __softirq_entry \ > + __attribute__((__section__(".softirqentry.text"))) > + > +/* Limits of hardirq entrypoints */ > +extern char __irqentry_text_start[]; > +extern char __irqentry_text_end[]; > +/* Limits of softirq entrypoints */ > +extern char __softirqentry_text_start[]; > +extern char __softirqentry_text_end[]; > + > +#else > +#define __irq_entry > +#define __softirq_entry > +#endif > + > #ifdef CONFIG_FUNCTION_GRAPH_TRACER > > /* for init task */ Since this is no longer just used for function tracing, perhaps the code should be moved to include/linux/irq.h or something. -- Steve