linux-kernel - Re: [PATCH 1/9] coresight: change coresight_device lock type to raw_spinlock

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Message-ID: <20241203102047.5844de81@gandalf.local.home>
Date: Tue, 3 Dec 2024 10:20:47 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Yeo Reum Yun <YeoReum.Yun@....com>
Cc: Suzuki Poulose <Suzuki.Poulose@....com>, "mike.leach@...aro.org"
 <mike.leach@...aro.org>, "james.clark@...aro.org" <james.clark@...aro.org>,
 "alexander.shishkin@...ux.intel.com" <alexander.shishkin@...ux.intel.com>,
 "bigeasy@...utronix.de" <bigeasy@...utronix.de>, "clrkwllms@...nel.org"
 <clrkwllms@...nel.org>, "coresight@...ts.linaro.org"
 <coresight@...ts.linaro.org>, "linux-arm-kernel@...ts.infradead.org"
 <linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
 <linux-kernel@...r.kernel.org>, "linux-rt-devel@...ts.linux.dev"
 <linux-rt-devel@...ts.linux.dev>, nd <nd@....com>
Subject: Re: [PATCH 1/9] coresight: change coresight_device lock type to
 raw_spinlock_t

On Tue, 3 Dec 2024 08:31:54 +0000
Yeo Reum Yun <YeoReum.Yun@....com> wrote:

> Hi Steve,
> 
> > Still should be documented somewhere. It should describe the maximum number
> > of feats that will ever be loaded. If there's a max, it makes it back to
> > O(1). With a 'k' of how long it takes to process the max number of feats.  
> 
> But with other patchset seems better
> since not only this function, but also for other functions too.

Which other patchset?

> 
> BTW, is there any example describing this I can refer? 

No, it's on our todo list for RT. To document the RT behavior of the
kernel. This is just one location.

-- Steve