linux-kernel - Re: [tree] ftrace, v16

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]

Date:	Thu, 12 Jun 2008 11:18:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [tree] ftrace, v16


* Sam Ravnborg <sam@...nborg.org> wrote:

> Hi Ingo
> 
> >       kbuild: create new CFLAGS_REMOVE_(basename).o option
> 
> But no changes to Documentation/kbuild/makefiles.txt
> 
> Documentation must be included for new kbuild features.
> 
> 
> > +ifdef CONFIG_DYNAMIC_FTRACE
> > +CFLAGS_REMOVE_ftrace.o = -pg
> > +endif
> 
> I can see where this comes from as we have:
> 
>     CFLAGS_ftrace.o := -foobar
> 
> But in all cases below I see the pattern:
> 
> ifdef CONFIG_FOO_BAR
> CFLAGS_REMOVE_foobar.o = -pg
> endif
> 
> And it would be nice to get this on one line instead.
> And use a syntax we can somehow remember.
> 
> Today we have:
>     ccflags-y := -foobar
> 
> to add options valid for the whole file.
> So we should then add:
> - possibility to remove an option valid for the whole file
> - add/remove an option for a single file
> 
> The suggested syntax:
> ccflags-remove-y := -foobar
> ccflags-<file.o>-y := -foobar
> ccflags-remove-<file.o>-y := -foobar
> 
> So in the case above for ftrace we would use:
> 
> ccflags-remove-ftrace.o-$(CONFIG_DYNAMIC_FTRACE) := -pg
> 
> Comments?

sounds like a good cleanup to me. Would you be interested in sending 
patches for this?

	Ingo
--
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/