From: Eric Blake <eblake@redhat.com>
To: "Marc-André Lureau" <marcandre.lureau@redhat.com>, qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, peter.maydell@linaro.org
Subject: Re: [Qemu-devel] [PATCH 1/5] coccinelle: replace code with ROUND_UP macro
Date: Wed, 7 Jun 2017 16:48:39 -0500 [thread overview]
Message-ID: <39aca404-2879-5e4c-deea-038853e70323@redhat.com> (raw)
In-Reply-To: <20170607074632.13162-2-marcandre.lureau@redhat.com>
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On 06/07/2017 02:46 AM, Marc-André Lureau wrote:
> I used a the following coccinelle script:
>
> @@
> expression e1;
> @@
> - ((e1) + (3)) / (4) * (4)
> + ROUND_UP(e1,4)
Can't you also search for:
@@
expression e1, e2
@@
- ((e1) + (e2 - 1)) / (e2) * (e2)
+ ROUND_UP(e1, e2)
to catch cases where we are rounding by a non-constant?
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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next prev parent reply other threads:[~2017-06-07 21:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-07 7:46 [Qemu-devel] [PATCH 0/5] Code cleanups with Coccinelle Marc-André Lureau
2017-06-07 7:46 ` [Qemu-devel] [PATCH 1/5] coccinelle: replace code with ROUND_UP macro Marc-André Lureau
2017-06-07 10:01 ` Juan Quintela
2017-06-07 21:48 ` Eric Blake [this message]
2017-06-07 7:46 ` [Qemu-devel] [PATCH 2/5] coccinelle: use DIV_ROUND_UP Marc-André Lureau
2017-06-07 9:13 ` Peter Maydell
2017-06-07 9:27 ` Marc-André Lureau
2017-06-07 21:50 ` Eric Blake
2017-06-08 7:37 ` Marc-André Lureau
2017-06-07 7:46 ` [Qemu-devel] [PATCH 3/5] arch: introduce ELF_NOTE_SIZE macro Marc-André Lureau
2017-06-07 7:46 ` [Qemu-devel] [PATCH 4/5] Replace g_malloc()+memcpy() with g_memdup() Marc-André Lureau
2017-06-07 10:02 ` Juan Quintela
2017-06-07 7:46 ` [Qemu-devel] [PATCH 5/5] coccinelle: prefer glib g_new/g_renew macros Marc-André Lureau
2017-06-07 21:58 ` Eric Blake
2017-06-08 8:23 ` Marc-André Lureau
2017-06-08 8:50 ` Markus Armbruster
2017-06-08 20:15 ` Eric Blake
2017-06-08 20:11 ` Eric Blake
2017-06-07 17:21 ` [Qemu-devel] [PATCH 0/5] Code cleanups with Coccinelle no-reply
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