linux-kernel - Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322

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Message-ID: <20170405150658.GU3941@linux-x5ow.site>
Date:   Wed, 5 Apr 2017 17:06:58 +0200
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     Yuval Shaia <yuval.shaia@...cle.com>, linux-rdma@...r.kernel.org,
        Doug Ledford <dledford@...hat.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Mike Marciniszyn <infinipath@...el.com>,
        Sean Hefty <sean.hefty@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs()

On Wed, Apr 05, 2017 at 04:54:40PM +0200, SF Markus Elfring wrote:
> >> @@ -7324,8 +7324,9 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
> >>  		actual_cnt -= dd->num_pports;
> >>  
> >>  	tabsize = actual_cnt;
> >> -	dd->cspec->msix_entries = kzalloc(tabsize *
> >> -			sizeof(struct qib_msix_entry), GFP_KERNEL);
> >> +	dd->cspec->msix_entries = kcalloc(tabsize,
> >> +					  sizeof(*dd->cspec->msix_entries),
> >> +					  GFP_KERNEL);
> > 
> > Are we fine with loosing the zeroing of the entries?
> 
> How did you get this concern?
> 
> Do you really miss such functionality from the other interface?

Ahm... Don't kzalloc() and kcalloc() both pass in __GFP_ZERO?

-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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