From: Julia Lawall <julia.lawall@inria.fr> To: Joe Perches <joe@perches.com> Cc: cocci <cocci@systeme.lip6.fr>, LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org Subject: Re: cocci script to convert linux-kernel allocs with BITS_TO_LONGS to bitmap_alloc Date: Tue, 13 Jul 2021 23:33:15 +0200 (CEST) [thread overview] Message-ID: <alpine.DEB.2.22.394.2107132332030.3024@hadrien> (raw) In-Reply-To: <afd3a282ca57a4a400c8bae9879a7c57bc507c59.camel@perches.com> On Sat, 10 Jul 2021, Joe Perches wrote: > On Sat, 2021-07-10 at 21:50 +0200, Julia Lawall wrote: > > On Fri, 9 Jul 2021, Joe Perches wrote: > > > > > Here is a cocci script to convert various types of bitmap allocations > > > that use BITS_TO_LONGS to the more typical bitmap_alloc functions. I see that there is also a bitmap_free. Maybe the rule should be introducing that as well? julia > > > > > > Perhaps something like it could be added to scripts/coccinelle. > > > The diff produced by the script is also below. > > > > > > $ cat bitmap_allocs.cocci > > > // typical uses of bitmap allocations > [] > > > @@ > > > expression val; > > > expression e1; > > > expression e2; > > > @@ > > > > > > - val = kcalloc(BITS_TO_LONGS(e1), sizeof(*val), e2) > > > + val = bitmap_zalloc(e1, e2) > > > > Is there something that guarantees that val has a type that has a size that > > is the same as a long? > > no, but afaict, all do. > > >
WARNING: multiple messages have this Message-ID (diff)
From: Julia Lawall <julia.lawall@inria.fr> To: Joe Perches <joe@perches.com> Cc: kernel-janitors@vger.kernel.org, cocci <cocci@systeme.lip6.fr>, LKML <linux-kernel@vger.kernel.org> Subject: Re: [Cocci] cocci script to convert linux-kernel allocs with BITS_TO_LONGS to bitmap_alloc Date: Tue, 13 Jul 2021 23:33:15 +0200 (CEST) [thread overview] Message-ID: <alpine.DEB.2.22.394.2107132332030.3024@hadrien> (raw) In-Reply-To: <afd3a282ca57a4a400c8bae9879a7c57bc507c59.camel@perches.com> On Sat, 10 Jul 2021, Joe Perches wrote: > On Sat, 2021-07-10 at 21:50 +0200, Julia Lawall wrote: > > On Fri, 9 Jul 2021, Joe Perches wrote: > > > > > Here is a cocci script to convert various types of bitmap allocations > > > that use BITS_TO_LONGS to the more typical bitmap_alloc functions. I see that there is also a bitmap_free. Maybe the rule should be introducing that as well? julia > > > > > > Perhaps something like it could be added to scripts/coccinelle. > > > The diff produced by the script is also below. > > > > > > $ cat bitmap_allocs.cocci > > > // typical uses of bitmap allocations > [] > > > @@ > > > expression val; > > > expression e1; > > > expression e2; > > > @@ > > > > > > - val = kcalloc(BITS_TO_LONGS(e1), sizeof(*val), e2) > > > + val = bitmap_zalloc(e1, e2) > > > > Is there something that guarantees that val has a type that has a size that > > is the same as a long? > > no, but afaict, all do. > > > _______________________________________________ Cocci mailing list Cocci@systeme.lip6.fr https://systeme.lip6.fr/mailman/listinfo/cocci
next prev parent reply other threads:[~2021-07-13 21:33 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-09 20:39 cocci script to convert linux-kernel allocs with BITS_TO_LONGS to bitmap_alloc Joe Perches 2021-07-09 20:39 ` [Cocci] " Joe Perches 2021-07-10 19:50 ` Julia Lawall 2021-07-10 19:50 ` [Cocci] " Julia Lawall 2021-07-10 20:02 ` Joe Perches 2021-07-10 20:02 ` [Cocci] " Joe Perches 2021-07-10 20:09 ` Julia Lawall 2021-07-10 20:09 ` [Cocci] " Julia Lawall 2021-07-13 21:33 ` Julia Lawall [this message] 2021-07-13 21:33 ` Julia Lawall 2021-07-13 23:09 ` Joe Perches 2021-07-13 23:09 ` [Cocci] " Joe Perches 2021-07-14 6:22 ` Julia Lawall 2021-07-14 6:22 ` [Cocci] " Julia Lawall
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