On Thu, Dec 05, 2013 at 04:06:10PM -0800, Greg Kroah-Hartman wrote:
> On Thu, Dec 05, 2013 at 06:54:49PM -0500, Adrien Vergé wrote:
> > > Well, these patches were incorrect, so that's not really a valid
> > > question :)
> >
> > Should I correct the pid size and send them again?
>
> I'm not the A
On Thu, Dec 05, 2013 at 06:54:49PM -0500, Adrien Vergé wrote:
> > Well, these patches were incorrect, so that's not really a valid
> > question :)
>
> Should I correct the pid size and send them again?
I'm not the ARM maintainer, so I can't say if I would reject them or
not.
And I don't know if
Hi Greg and Christopher,
Thank you for your feedback.
2013/12/4 Greg Kroah-Hartman
> What is it's purpose then? At first glance, this seems to be exactly
> what 'perf' provides already. Doesn't perf work on ARM today?
On ARM, perf is unable to trace every instruction, and certainly not
record
On Thu, Dec 05, 2013 at 05:45:12PM -0500, Christopher Covington wrote:
> On 12/05/2013 03:16 PM, Greg Kroah-Hartman wrote:
> > On Thu, Dec 05, 2013 at 03:12:50PM -0500, Christopher Covington wrote:
> [...]
> > And adding new features to code that is "dead" and should probably be
> > removed isn't a
On 12/05/2013 03:16 PM, Greg Kroah-Hartman wrote:
> On Thu, Dec 05, 2013 at 03:12:50PM -0500, Christopher Covington wrote:
[...]
> And adding new features to code that is "dead" and should probably be
> removed isn't a good idea, as I'm sure you can understand.
I would consider feature additions t
On Thu, Dec 05, 2013 at 03:12:50PM -0500, Christopher Covington wrote:
> Hi Greg,
>
> On 12/04/2013 11:01 PM, Greg Kroah-Hartman wrote:
> > On Wed, Dec 04, 2013 at 10:49:25PM -0500, Adrien Vergé wrote:
> >> 2013/12/4 Greg Kroah-Hartman :
> >>> How much overhead does the existing tracing code have
Hi Greg,
On 12/04/2013 11:01 PM, Greg Kroah-Hartman wrote:
> On Wed, Dec 04, 2013 at 10:49:25PM -0500, Adrien Vergé wrote:
>> 2013/12/4 Greg Kroah-Hartman :
>>> How much overhead does the existing tracing code have on ARM? Is ETM
>>> still even needed? Why not just use ETM for the core tracing c
On Wed, Dec 04, 2013 at 10:49:25PM -0500, Adrien Vergé wrote:
> 2013/12/4 Greg Kroah-Hartman :
> > How much overhead does the existing tracing code have on ARM? Is ETM
> > still even needed? Why not just use ETM for the core tracing code
> > instead?
>
> Coresight ETM is not just faster than /sy
2013/12/4 Greg Kroah-Hartman :
> How much overhead does the existing tracing code have on ARM? Is ETM
> still even needed? Why not just use ETM for the core tracing code
> instead?
Coresight ETM is not just faster than /sys/kernel/debug/tracing, it
provides more detailed and customisable info. F
On Wed, Dec 04, 2013 at 04:12:56PM -0500, Adrien Vergé wrote:
> 2013/12/4 Greg Kroah-Hartman :
> > Your pid implementation is broken, see my other email about that :(
>
> Thank you for your remarks on pid. I'll try to correct that.
>
> > And again, what's wrong with the existing tracing functiona
2013/12/4 Greg Kroah-Hartman :
> Your pid implementation is broken, see my other email about that :(
Thank you for your remarks on pid. I'll try to correct that.
> And again, what's wrong with the existing tracing functionalty that is
> processor agnostic? Why can't we just delete this driver to
On Wed, Dec 04, 2013 at 11:52:34AM -0500, Adrien Vergé wrote:
> Hi all,
>
> First, please excuse me for these misformatted patches that my email
> client messed up. Next time I will use git send-email. The 3 patches
> can be found on
> http://git.dorsal.polymtl.ca/~averge?p=linux.git;a=shortlog;h=
Hi all,
First, please excuse me for these misformatted patches that my email
client messed up. Next time I will use git send-email. The 3 patches
can be found on
http://git.dorsal.polymtl.ca/~averge?p=linux.git;a=shortlog;h=refs/heads/etm_with_addr_and_pid
Greg: you're right, sysfs is a questiona
On Tue, Dec 03, 2013 at 11:39:21PM -0500, Adrien Vergé wrote:
> Usage of ETM tracing facility is currently very limited: user can
> only start/stop tracing. This set of patches enables management of
> address combinations and PIDs that trigger tracing.
>
> ETM management was done via sysfs entries
Usage of ETM tracing facility is currently very limited: user can
only start/stop tracing. This set of patches enables management of
address combinations and PIDs that trigger tracing.
ETM management was done via sysfs entries (trace_info,
trace_running...), this code adds trace_addrrange and trac
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