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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: smatch@vger.kernel.org
Subject: Re: [PATCH] smatch_allocations: Give a hint about dma_alloc_(attrs|coherent)
Date: Mon, 15 Aug 2022 14:42:49 +0300	[thread overview]
Message-ID: <20220815114249.GN3438@kadam> (raw)
In-Reply-To: <c8d97ff256eee5ad0bf1acbd06d9d94fa16771dc.1660551505.git.christophe.jaillet@wanadoo.fr>

On Mon, Aug 15, 2022 at 10:18:31AM +0200, Christophe JAILLET wrote:
> In recent kernel, dma_alloc_attrs() and dma_alloc_coherent() zero the
> allocated memory.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> This was not the case in older kernel, so maybe it is better not to state
> that the memory is zeroed.
> 
> (I've not seen where/how this .zeroed information was used)

This code is aspirational.  I keep on creating lists of allocation
functions but hopefully it can all be pulled into one central location.

regards,
dan carpenter

      reply	other threads:[~2022-08-15 11:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-15  8:18 [PATCH] smatch_allocations: Give a hint about dma_alloc_(attrs|coherent) Christophe JAILLET
2022-08-15 11:42 ` Dan Carpenter [this message]

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