From: keith.busch@intel.com (Keith Busch)
Subject: [PATCH] NVMe: Re-introduce polling for completions
Date: Tue, 5 Apr 2016 22:29:54 +0000 [thread overview]
Message-ID: <20160405222953.GE12625@localhost.localdomain> (raw)
In-Reply-To: <36E8D38D6B771A4BBDB1C0D800158A51865F402E@SSIEXCH-MB3.ssi.samsung.com>
On Tue, Apr 05, 2016@10:04:22PM +0000, Judy Brock-SSI wrote:
> Going straight to MSI-x is a higher risk change since re-introducing polling restores code that was in place previously with no reported problems whereas changing the init path to something new has no test time on it.
Well, I wouldn't say "no" test time since we have a well tested path
that goes straight to MSI-x in place for some time.
If we rely on polled completions during initialization, we potentially
add up to 2 seconds for device initialization to complete (1 second
polling interval * 2 commands using broken IRQ).
Maybe you want both?
next prev parent reply other threads:[~2016-04-05 22:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 22:24 [PATCH] NVMe: Re-introduce polling for completions Keith Busch
2016-04-05 7:32 ` Johannes Thumshirn
2016-04-05 12:35 ` Christoph Hellwig
2016-04-05 17:54 ` Keith Busch
2016-04-05 21:39 ` Keith Busch
2016-04-05 22:04 ` Judy Brock-SSI
2016-04-05 22:29 ` Keith Busch [this message]
2016-04-06 5:22 ` Judy Brock-SSI
2016-04-06 6:56 ` Christoph Hellwig
2016-04-06 6:56 ` Christoph Hellwig
2016-04-12 19:00 ` Christoph Hellwig
2016-04-12 19:02 ` Christoph Hellwig
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