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From: Greg KH <greg@kroah.com>
To: William Tambe <tambewilliam@gmail.com>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: disabling timer interrupt until (system_state >= SYSTEM_RUNNING)
Date: Thu, 6 Feb 2020 19:26:15 +0100
Message-ID: <20200206182615.GA4092434@kroah.com> (raw)
In-Reply-To: <CAF8i9mOKe3FKi8t8H5zF6-Kh8qPdFp6C2aNh-oNMz1kPpdeW4Q@mail.gmail.com>

On Thu, Feb 06, 2020 at 12:25:27PM -0500, William Tambe wrote:
> Since voluntary preemption is used during kernel booting, is it safe
> to disable timer interrupt until (system_state >= SYSTEM_RUNNING) ?
> 
> Wouldn't it speed up booting ?

Try it and see!

:)

Seriously, think about what needs to be done by the system during boot
time.  Hardware is initialized, threads are spawned, lots of other
things are going on.  It's not just one single process until that system
state change happens by any means.

thanks,

greg k-h

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Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06 17:25 William Tambe
2020-02-06 18:26 ` Greg KH [this message]
2020-02-07  0:53   ` William Tambe

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