From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: Pratik Patel <pratikp-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Cc: "linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org"
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Subject: Re: CoreSight framework and drivers
Date: Sun, 23 Dec 2012 11:32:39 +0000 [thread overview]
Message-ID: <20121223113239.GG16237@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <20121221221828.GA2658-9H3kiKr51/JHGpnEYu0o6d07Fnf2crXX0E9HWUfgJXw@public.gmane.org>
On Fri, Dec 21, 2012 at 10:18:28PM +0000, Pratik Patel wrote:
> What user interface do you plan to provide for the CTI? Maybe
> something consistent with other CoreSight components in sysfs to
> allow users to enable, disable, map and unmap ???
>
> Please let me know your thoughts.
Rather than have your current approach of dev nodes + sysfs config files for
each coresight device, I think it might be better to follow something closer
to ftrace and stick per-device directories under debugfs/coresight/. Then you
can have a pipe file and some config files in the same directory for each
component. You also don't need to do any mapping operations with this (just
post-process the stream directly).
It might also be fun to play with file redirection for sources and sinks, but
that's probably a bit too invasive.
Will
next prev parent reply other threads:[~2012-12-23 11:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1355858365-11849-1-git-send-email-pratikp@codeaurora.org>
[not found] ` <20121219112314.GA26329@mudshark.cambridge.arm.com>
2012-12-19 21:06 ` CoreSight framework and drivers Pratik Patel
[not found] ` <50D1F37E.6000804@ti.com>
2012-12-19 21:24 ` Pratik Patel
2012-12-20 17:46 ` Jon Hunter
2012-12-20 19:51 ` Pratik Patel
2012-12-20 20:16 ` Jean Pihet
2012-12-21 22:12 ` Pratik Patel
2012-12-20 22:54 ` Jon Hunter
2012-12-20 23:40 ` Russell King - ARM Linux
2012-12-21 22:17 ` Pratik Patel
2012-12-21 22:18 ` Pratik Patel
[not found] ` <20121221221828.GA2658-9H3kiKr51/JHGpnEYu0o6d07Fnf2crXX0E9HWUfgJXw@public.gmane.org>
2012-12-23 11:32 ` Will Deacon [this message]
2013-01-03 18:06 ` Pratik Patel
[not found] ` <20130103180643.GA30277-9H3kiKr51/JHGpnEYu0o6d07Fnf2crXX0E9HWUfgJXw@public.gmane.org>
2013-01-07 11:58 ` Will Deacon
2013-01-16 0:14 ` Pratik Patel
2013-01-17 10:55 ` Will Deacon
2013-01-02 20:00 ` Jon Hunter
2013-01-03 19:32 ` Pratik Patel
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