From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-scsi@vger.kernel.org, jbottomley@odin.com,
martin.petersen@oracle.com, nico@fluxnic.net,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] scsi: use sector_div instead of do_div
Date: Wed, 25 Nov 2015 22:28:34 -0500 [thread overview]
Message-ID: <yq1bnahjv6l.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <24882658.08y4bWL6tn@wuerfel> (Arnd Bergmann's message of "Fri, 20 Nov 2015 17:38:28 +0100")
>>>>> "Arnd" == Arnd Bergmann <arnd@arndb.de> writes:
Arnd> do_div is the wrong way to divide a sector_t, as it is less
Arnd> efficient when sector_t is 32-bit wide. With the upcoming do_div
Arnd> optimizations, the kernel starts warning about this:
Applied.
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
nico@fluxnic.net, jbottomley@odin.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] scsi: use sector_div instead of do_div
Date: Wed, 25 Nov 2015 22:28:34 -0500 [thread overview]
Message-ID: <yq1bnahjv6l.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <24882658.08y4bWL6tn@wuerfel> (Arnd Bergmann's message of "Fri, 20 Nov 2015 17:38:28 +0100")
>>>>> "Arnd" == Arnd Bergmann <arnd@arndb.de> writes:
Arnd> do_div is the wrong way to divide a sector_t, as it is less
Arnd> efficient when sector_t is 32-bit wide. With the upcoming do_div
Arnd> optimizations, the kernel starts warning about this:
Applied.
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: martin.petersen@oracle.com (Martin K. Petersen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] scsi: use sector_div instead of do_div
Date: Wed, 25 Nov 2015 22:28:34 -0500 [thread overview]
Message-ID: <yq1bnahjv6l.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <24882658.08y4bWL6tn@wuerfel> (Arnd Bergmann's message of "Fri, 20 Nov 2015 17:38:28 +0100")
>>>>> "Arnd" == Arnd Bergmann <arnd@arndb.de> writes:
Arnd> do_div is the wrong way to divide a sector_t, as it is less
Arnd> efficient when sector_t is 32-bit wide. With the upcoming do_div
Arnd> optimizations, the kernel starts warning about this:
Applied.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2015-11-26 3:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-20 16:38 [PATCH] scsi: use sector_div instead of do_div Arnd Bergmann
2015-11-20 16:38 ` Arnd Bergmann
2015-11-24 12:48 ` Johannes Thumshirn
2015-11-24 12:48 ` Johannes Thumshirn
2015-11-24 12:48 ` Johannes Thumshirn
2015-11-24 12:50 ` Sagi Grimberg
2015-11-24 12:50 ` Sagi Grimberg
2015-11-24 15:03 ` Hannes Reinecke
2015-11-24 15:03 ` Hannes Reinecke
2015-11-26 3:28 ` Martin K. Petersen [this message]
2015-11-26 3:28 ` Martin K. Petersen
2015-11-26 3:28 ` Martin K. Petersen
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