From: Ingo Molnar <mingo@kernel.org>
To: Jiri Slaby <jslaby@suse.cz>
Cc: Juergen Gross <jgross@suse.com>, Len Brown <len.brown@intel.com>,
x86@kernel.org, Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-pm@vger.kernel.org, hpa@zytor.com,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org, mingo@redhat.com,
Thomas Gleixner <tglx@linutronix.de>, Pavel Machek <pavel@ucw.cz>,
jpoimboe@redhat.com, xen-devel@lists.xenproject.org,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC] linkage: new macros for functions and data
Date: Thu, 16 Mar 2017 09:02:57 +0100 [thread overview]
Message-ID: <20170316080257.GA7815@gmail.com> (raw)
In-Reply-To: <20170307172404.27374-1-jslaby@suse.cz>
* Jiri Slaby <jslaby@suse.cz> wrote:
> SYM_LOCAL_ALIAS_START -- use where there are two local names for one code
> SYM_ALIAS_START -- use where there are two global names for one code
> SYM_LOCAL_FUNC_START -- use for local functions
> SYM_FUNCTION_START -- use for global functions
> SYM_WEAK_FUNC_START -- use for weak functions
> SYM_ALIAS_END -- the end of LOCALALIASed or ALIASed code
> SYM_FUNCTION_END -- the end of SYM_LOCAL_FUNC_START, SYM_FUNCTION_START, SYM_WEAK_FUNC_START, ...
> SYM_DATA_START -- global data symbol
> SYM_DATA_END -- the end of SYM_DATA_START symbol
This looks mostly good to me, with minor details:
- The mixed 'FUNC' and 'FUNCTION' naming looks a bit confusing - I'd pick one and
use that consistently.
- I'd also make the START/END constructs look more symmetric, i.e. make the
attribute a postfix, not a prefix.
- In fact I'd make the 'alias' notion an attribute as well - what matters mostly
is that it's a function symbol, and that fact is lost from the SYM_ALIAS naming.
I.e. something like this:
SYM_FUNCTION_START
SYM_FUNCTION_START_WEAK
SYM_FUNCTION_START_LOCAL
SYM_FUNCTION_START_ALIAS
SYM_FUNCTION_START_LOCAL_ALIAS
...
SYM_FUNCTION_END
SYM_DATA_START
SYM_DATA_END
Note how simple and structured looking the nomenclature is when grouped in such a
way, how easy it is to verify at a glance, and how easy it is to extend with new
postfixes.
( In theory we could also make the attributes a real macro argument in the future,
should the number of attributes increase significantly. )
Does this look good to everyone?
Thanks,
Ingo
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next prev parent reply other threads:[~2017-03-16 8:02 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-17 10:47 [PATCH 01/10] x86: assembly, ENTRY for fn, GLOBAL for data Jiri Slaby
2017-02-17 10:47 ` [PATCH 02/10] x86: assembly, use ENDPROC for functions Jiri Slaby
2017-02-17 11:08 ` Juergen Gross
2017-02-17 11:06 ` [PATCH 01/10] x86: assembly, ENTRY for fn, GLOBAL for data Juergen Gross
2017-03-01 9:38 ` Ingo Molnar
2017-03-01 9:50 ` Jiri Slaby
2017-03-01 10:09 ` Thomas Gleixner
2017-03-01 10:27 ` Ingo Molnar
2017-03-03 12:22 ` Jiri Slaby
2017-03-03 18:20 ` hpa
2017-03-06 14:09 ` Jiri Slaby
2017-03-07 7:57 ` Ingo Molnar
2017-03-03 18:24 ` hpa
2017-03-07 8:27 ` Ingo Molnar
2017-03-07 17:24 ` [RFC] linkage: new macros for functions and data Jiri Slaby
2017-03-16 8:02 ` Ingo Molnar [this message]
2017-03-16 8:13 ` Jiri Slaby
2017-03-20 12:32 ` [PATCH v2 01/10] linkage: new macros for assembler symbols Jiri Slaby
2017-03-20 12:32 ` [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby
2017-03-20 13:32 ` Josh Poimboeuf
2017-03-20 15:32 ` Jiri Slaby
2017-03-20 16:07 ` Josh Poimboeuf
2017-03-21 14:08 ` Pavel Machek
2017-03-22 7:25 ` Ingo Molnar
2017-03-22 7:39 ` Jiri Slaby
2017-03-22 7:46 ` Ingo Molnar
2017-03-22 14:11 ` Josh Poimboeuf
2017-03-22 15:01 ` Jiri Slaby
2017-03-22 15:33 ` Josh Poimboeuf
2017-03-23 7:38 ` Ingo Molnar
2017-03-23 13:24 ` Josh Poimboeuf
2017-03-22 12:06 ` Jiri Slaby
2017-03-22 15:52 ` Pavel Machek
2017-03-20 12:32 ` [PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Jiri Slaby
2017-03-21 14:48 ` Josh Poimboeuf
2017-03-22 7:29 ` Ingo Molnar
2017-03-22 14:26 ` Josh Poimboeuf
2017-03-22 15:44 ` Jiri Slaby
2017-04-10 11:23 ` Jiri Slaby
2017-04-10 19:35 ` Josh Poimboeuf
2017-04-12 6:24 ` Jiri Slaby
2017-04-12 6:52 ` Ingo Molnar
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