linux-kernel - Re: [PATCH -tip FIXED] ftrace: add nop tracer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <f488382f0809191635o45f3ed17vc23380eab41b2878@mail.gmail.com>
Date:	Fri, 19 Sep 2008 16:35:35 -0700
From:	"Steven Noonan" <steven@...inklabs.net>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: [PATCH -tip FIXED] ftrace: add nop tracer

On Fri, Sep 19, 2008 at 2:23 PM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Fri, 19 Sep 2008 03:06:43 -0700
> Steven Noonan <steven@...inklabs.net> wrote:
>
>> --- a/kernel/trace/trace.h
>> +++ b/kernel/trace/trace.h
>> @@ -339,6 +339,10 @@ extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
>>  extern int trace_selftest_startup_wakeup(struct tracer *trace,
>>                                        struct trace_array *tr);
>>  #endif
>> +#ifdef CONFIG_NOP_TRACER
>> +extern int trace_selftest_startup_nop(struct tracer *trace,
>> +                                      struct trace_array *tr);
>> +#endif
>>  #ifdef CONFIG_CONTEXT_SWITCH_TRACER
>>  extern int trace_selftest_startup_sched_switch(struct tracer *trace,
>>                                              struct trace_array *tr);
>
> Consider omitting the ifdefs around the declarations.
>
> pro: the code looks nicer and is less likely to suffer build errors
> with weird config combinations.
>
> con: build errors are reported at link-time rather than at compile-time.
>
> Personally, I think pro>con here.
>

I merely based this on one of the other tracers, so the ifdefs are
basically copied and renamed.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/