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From: Clemens Ladisch <clemens@ladisch.de>
To: Satendra Singh Thakur <satendra.t@samsung.com>
Cc: alsa-devel@alsa-project.org, ycheon.song@samsung.com,
	tiwai@suse.com, linux-kernel@vger.kernel.org,
	nishant.s4@samsung.com, hemanshu.s@samsung.com,
	o-takashi@sakamocchi.jp
Subject: Re: [alsa-devel] [RFC] [ALSA][CONTROL] Added 2 ioctls for reading/writing values of multiple controls in one go (at once)
Date: Thu, 2 Feb 2017 18:22:43 +0100	[thread overview]
Message-ID: <0cee3189-8090-b2dd-657a-cd1ac034a441@ladisch.de> (raw)
In-Reply-To: <1486005286-25625-1-git-send-email-satendra.t@samsung.com>

Satendra Singh Thakur wrote:
> -Added an ioctl to read values of multiple elements at once
> -Added an ioctl to write values of multiple elements at once
> -In the absence of above ioctls user needs to call N ioctls to
>  read/write value of N elements which requires N context switches

And why are these N context switches a problem?

> -Above mentioned ioctl will be useful for alsa utils such as amixer
>  which reads all controls of given sound card

Is there a noticeable difference?


Regards,
Clemens

      parent reply	other threads:[~2017-02-02 17:28 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20170202031525epcas1p2164b4ca25afe9fb5cd418d004da961f5@epcas1p2.samsung.com>
2017-02-02  3:14 ` Satendra Singh Thakur
2017-02-02  3:45   ` Takashi Sakamoto
2017-02-03  7:24     ` Takashi Iwai
2017-02-02 17:22   ` Clemens Ladisch [this message]

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