From: Matthew Wilcox <willy@infradead.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, will@kernel.org, a.darwish@linutronix.de,
tglx@linutronix.de, paulmck@kernel.org, bigeasy@linutronix.de,
rostedt@goodmis.org, linux-kernel@vger.kernel.org,
corbet@lwn.net, davem@davemloft.net, netdev@vger.kernel.org,
linux-doc@vger.kernel.org, viro@zeniv.linux.org.uk,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 2/5] seqlock: Fold seqcount_LOCKNAME_t definition
Date: Wed, 29 Jul 2020 15:55:07 +0100
Message-ID: <20200729145507.GW23808@casper.infradead.org> (raw)
In-Reply-To: <20200729140142.347671778@infradead.org>
On Wed, Jul 29, 2020 at 03:52:51PM +0200, Peter Zijlstra wrote:
> Manual repetition is boring and error prone.
Yes, but generated functions are hard to grep for, and I'm pretty sure
that kernel-doc doesn't know how to expand macros into comments that it
can then extract documentation from.
I've been thinking about how to cure this (mostly in the context
of page-flags.h). I don't particularly like the C preprocessor, but
m4 is worse and defining our own preprocessing language seems like a
terrible idea.
So I was thinking about moving the current contents of page-flags.h
to include/src/page-flags.h, making linux/page-flags.h depend on
src/page-flags.h and run '$(CPP) -C' to generate it. I've been a little
busy recently and haven't had time to do more than muse about this, but
I think it might make sense for some of our more heavily macro-templated
header files.
next prev parent reply index
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 13:52 [PATCH 0/5] seqlock: Cleanups Peter Zijlstra
2020-07-29 13:52 ` [PATCH 1/5] seqlock: s/__SEQ_LOCKDEP/__SEQ_LOCK/g Peter Zijlstra
2020-07-29 14:29 ` Ahmed S. Darwish
2020-07-29 13:52 ` [PATCH 2/5] seqlock: Fold seqcount_LOCKNAME_t definition Peter Zijlstra
2020-07-29 14:38 ` Ahmed S. Darwish
2020-07-29 14:55 ` Matthew Wilcox [this message]
2020-07-29 15:33 ` peterz
2020-07-29 16:19 ` peterz
2020-08-27 7:54 ` [tip: locking/core] seqlock,tags: Add support for SEQCOUNT_LOCKTYPE() tip-bot2 for Peter Zijlstra
2020-07-29 13:52 ` [PATCH 3/5] seqlock: Fold seqcount_LOCKNAME_init() definition Peter Zijlstra
2020-07-29 13:52 ` [PATCH 4/5] seqcount: Compress SEQCNT_LOCKNAME_ZERO() Peter Zijlstra
2020-07-29 13:52 ` [PATCH 5/5] seqcount: More consistent seqprop names Peter Zijlstra
2020-07-29 14:39 ` Ahmed S. Darwish
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