linux-kernel - Re: [PATCH v1 2/4] misc: fastrpc: Capture kernel and DSP performance counters

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Message-ID: <2024100702-pony-repent-d1b8@gregkh>
Date: Mon, 7 Oct 2024 11:07:14 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Ekansh Gupta <quic_ekangupt@...cinc.com>
Cc: srinivas.kandagatla@...aro.org, linux-arm-msm@...r.kernel.org,
	quic_bkumar@...cinc.com, linux-kernel@...r.kernel.org,
	quic_chennak@...cinc.com, dri-devel@...ts.freedesktop.org,
	arnd@...db.de
Subject: Re: [PATCH v1 2/4] misc: fastrpc: Capture kernel and DSP performance
 counters

On Mon, Oct 07, 2024 at 02:15:16PM +0530, Ekansh Gupta wrote:
> Add support to capture kernel performance counters for different
> kernel level operations. These counters collects the information
> for remote call and copies the information to a buffer shared
> by user.
> 
> Collection of DSP performance counters is also added as part of
> this change. DSP updates the performance information in the
> metadata which is then copied to a buffer passed by the users.

"also" usually means "should be broken up into a new patch", right?

Also, where is any of these new "performance counters" documented?  Why
not use the normal kernel apis for performance counters?

thanks,

greg k-h