From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Sleep and Wake up
Date: Mon, 2 May 2011 12:28:30 -0700 [thread overview]
Message-ID: <20110502192830.GA21311@kroah.com> (raw)
In-Reply-To: <BANLkTimpAEycOnqO1qErguf0zbuLd8yB8g@mail.gmail.com>
On Mon, May 02, 2011 at 11:32:32AM -0700, Abu Rasheda wrote:
> I am testing my driver on much faster host processor and facing
> following issues:
>
> My host is too powerful and it can fill up device buffer queue very fast.
What kind of device is this?
> I get best performance when I do busy wait, but this is not desirable
> and is bad design.
>
> I need to sleep and wake up quickly and predictability. Indication
> from device that queue has space, is coming in form of memory write
> (device writes to a memory location of i86 processor).
>
> I tried using wait_event_interruptible_timeout, I am depending on 2nd
> parameter of the function but it wake up is too slow, even tried using
> value of 1.
Why not try increasing the buffer in your driver to handle any amount of
data needed?
thanks,
greg k-h
next prev parent reply other threads:[~2011-05-02 19:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-02 18:32 Sleep and Wake up Abu Rasheda
2011-05-02 19:28 ` Greg KH [this message]
2011-05-02 21:02 ` Abu Rasheda
2011-05-02 22:04 ` Greg KH
2011-05-02 23:04 ` Fwd: " Abu Rasheda
2011-05-02 19:40 ` Kernel compilation Ezequiel García
2011-05-05 14:15 ` Pico Geyer
2011-05-03 7:10 ` Sleep and Wake up Mulyadi Santosa
2011-05-10 3:14 ` Peter Teoh
-- strict thread matches above, loose matches on Subject: below --
2011-05-03 2:13 Vikram Narayanan
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