Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932644Ab3COVKQ (ORCPT ); Fri, 15 Mar 2013 17:10:16 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:3839 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932316Ab3COVKN (ORCPT ); Fri, 15 Mar 2013 17:10:13 -0400 X-Authority-Analysis: v=2.0 cv=BZhaI8R2 c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=-q0REg9GTioA:10 a=5SG0PmZfjMsA:10 a=Q9fys5e9bTEA:10 a=meVymXHHAAAA:8 a=1T3LCbpRKtkA:10 a=x30EXVXcAAAA:8 a=WGkvPsVo5tRCZhO3IZIA:9 a=PUjeQqilurYA:10 a=jeBq3FmKZ4MA:10 a=2F0HLYTCHDIA:10 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 74.67.115.198 Message-ID: <1363381809.25967.64.camel@gandalf.local.home> Subject: Re: [PATCH v11 1/3] tracing: Add DEFINE_EVENT_FN() macro From: Steven Rostedt To: Seiji Aguchi Cc: "H. Peter Anvin (hpa@zytor.com)" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "Thomas Gleixner (tglx@linutronix.de)" , "'mingo@elte.hu' (mingo@elte.hu)" , "Borislav Petkov (bp@alien8.de)" , "Satoru Moriya (smoriya@redhat.com)" , "dle-develop@lists.sourceforge.net" , "linux-edac@vger.kernel.org" , "Luck, Tony (tony.luck@intel.com)" , "Paul E. McKenney (paulmck@us.ibm.com)" Date: Fri, 15 Mar 2013 17:10:09 -0400 In-Reply-To: References: Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.4.4-2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3625 Lines: 93 You still need to add: From: Steven Rostedt Otherwise you get the authorship of this patch. -- Steve On Fri, 2013-03-15 at 20:35 +0000, Seiji Aguchi wrote: > Each TRACE_EVENT() adds several helper functions. If two or more trace events > share the same structure and print format, they can also share most of these > helper functions and save a lot of space from duplicate code. This is why the > DECLARE_EVENT_CLASS() and DEFINE_EVENT() were created. > > Some events require a trigger to be called at registering and unregistering of > the event and to do so they use TRACE_EVENT_FN(). > > If multiple events require a trigger, they currently have no choice but to use > TRACE_EVENT_FN() as there's no DEFINE_EVENT_FN() available. This unfortunately > causes a lot of wasted duplicate code created. > > By adding a DEFINE_EVENT_FN(), these events can still use a > DECLARE_EVENT_CLASS() and then define their own triggers. > > Signed-off-by: Steven Rostedt > Signed-off-by: Seiji Aguchi > --- > include/linux/tracepoint.h | 2 ++ > include/trace/define_trace.h | 5 +++++ > include/trace/ftrace.h | 4 ++++ > 3 files changed, 11 insertions(+), 0 deletions(-) > > diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h > index 2f322c3..9bf59e5 100644 > --- a/include/linux/tracepoint.h > +++ b/include/linux/tracepoint.h > @@ -378,6 +378,8 @@ static inline void tracepoint_synchronize_unregister(void) > #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) > #define DEFINE_EVENT(template, name, proto, args) \ > DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) > +#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg)\ > + DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) > #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ > DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) > #define DEFINE_EVENT_CONDITION(template, name, proto, \ > diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h > index 1905ca8..02e1003 100644 > --- a/include/trace/define_trace.h > +++ b/include/trace/define_trace.h > @@ -44,6 +44,10 @@ > #define DEFINE_EVENT(template, name, proto, args) \ > DEFINE_TRACE(name) > > +#undef DEFINE_EVENT_FN > +#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ > + DEFINE_TRACE_FN(name, reg, unreg) > + > #undef DEFINE_EVENT_PRINT > #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ > DEFINE_TRACE(name) > @@ -91,6 +95,7 @@ > #undef TRACE_EVENT_CONDITION > #undef DECLARE_EVENT_CLASS > #undef DEFINE_EVENT > +#undef DEFINE_EVENT_FN > #undef DEFINE_EVENT_PRINT > #undef DEFINE_EVENT_CONDITION > #undef TRACE_HEADER_MULTI_READ > diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h > index 40dc5e8..7bab676 100644 > --- a/include/trace/ftrace.h > +++ b/include/trace/ftrace.h > @@ -71,6 +71,10 @@ > static struct ftrace_event_call __used \ > __attribute__((__aligned__(4))) event_##name > > +#undef DEFINE_EVENT_FN > +#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ > + DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) > + > #undef DEFINE_EVENT_PRINT > #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ > DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) > -- 1.7.1 > -- 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/