xen-devel.lists.xenproject.org archive mirror
 help / color / mirror / Atom feed
From: Dario Faggioli <dario.faggioli@citrix.com>
To: George Dunlap <george.dunlap@citrix.com>, xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	George Dunlap <george.dunlap@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Jennifer Herbert <jennifer.herbert@citrix.com>,
	Julien Grall <julien.grall@arm.com>,
	Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH 06/15] xen: trace IRQ enabling/disabling
Date: Thu, 8 Jun 2017 18:11:16 +0200	[thread overview]
Message-ID: <1496938276.9462.35.camel@citrix.com> (raw)
In-Reply-To: <6629d7b1-527a-e95c-680b-787f53439bdf@citrix.com>


[-- Attachment #1.1: Type: text/plain, Size: 1890 bytes --]

On Thu, 2017-06-08 at 17:01 +0100, George Dunlap wrote:
> On 01/06/17 18:34, Dario Faggioli wrote:
> > diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> > index 374c1c0..81910c9 100644
> > --- a/xen/Kconfig.debug
> > +++ b/xen/Kconfig.debug
> > @@ -98,7 +98,7 @@ config PERF_ARRAYS
> >  	---help---
> >  	  Enables software performance counter array histograms.
> >  
> > -config TRACING
> > +menuconfig TRACING
> >  	bool "Tracing"
> >  	default y
> >  	---help---
> > @@ -106,6 +106,15 @@ config TRACING
> >  	  in per-CPU ring buffers. The 'xentrace' tool can be used
> > to read
> >  	  the buffers and dump the content on the disk.
> >  
> > +config TRACE_IRQSOFF
> > +	bool "Trace when IRQs are disabled and (re)enabled" if
> > EXPERT = "y"
> > +	default n
> > +	depends on TRACING
> > +	---help---
> > +	  Makes it possible to generate events _every_ time IRQs
> > are disabled
> > +          and (re)enabled, with also an indication of where that
> > happened.
> > +          Note that this comes with high overead and produces huge
> > amount of
> > +          tracing data.
> 
> I think I might emphasize that the overhead well be present even when
> tracing is off.  What about something like this?
> 
Yes, good point.

> "Note that this comes with an overhead even when tracing is disabled;
> and has a high overhead and produces a large amount of tracing data
> when
> enabled."
> 
I like it, I'll go for it.

> With that change:
> 
> Acked-by: George Dunlap <george.dunlap@citrix.com>
> 
Thanks and Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 819 bytes --]

[-- Attachment #2: Type: text/plain, Size: 127 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel

  reply	other threads:[~2017-06-08 16:11 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-01 17:33 [PATCH 00/15] xen/tools: add tracing to various Xen subsystems Dario Faggioli
2017-06-01 17:33 ` [PATCH 01/15] xen: in do_softirq() sample smp_processor_id() once and for all Dario Faggioli
2017-06-07 14:38   ` Jan Beulich
2017-06-08 14:12     ` George Dunlap
2017-06-08 14:20   ` George Dunlap
2017-06-08 14:42     ` Jan Beulich
2017-06-01 17:33 ` [PATCH 02/15] xen: tracing: avoid checking tb_init_done multiple times Dario Faggioli
2017-06-01 17:53   ` Andrew Cooper
2017-06-01 23:08     ` Dario Faggioli
2017-06-07 14:46   ` Jan Beulich
2017-06-07 15:55     ` Dario Faggioli
2017-06-07 16:06       ` Jan Beulich
2017-06-08 14:34         ` George Dunlap
2017-06-08 14:37   ` George Dunlap
2017-06-01 17:33 ` [PATCH 03/15] xen/tools: tracing: several improvements on IRQs tracing Dario Faggioli
2017-06-01 18:02   ` Andrew Cooper
2017-06-01 23:12     ` Dario Faggioli
2017-06-07 15:05   ` Jan Beulich
2017-06-07 15:45     ` Dario Faggioli
2017-06-07 15:58       ` Jan Beulich
2017-06-08 14:53         ` George Dunlap
2017-06-08 15:34           ` Jan Beulich
2017-06-08 14:59   ` George Dunlap
2017-06-01 17:34 ` [PATCH 04/15] tools: xenalyze: fix dumping of PM_IDLE events Dario Faggioli
2017-06-08 15:06   ` George Dunlap
2017-06-01 17:34 ` [PATCH 05/15] xen: make it possible to disable tracing in Kconfig Dario Faggioli
2017-06-01 18:43   ` Andrew Cooper
2017-06-07 11:01     ` Julien Grall
2017-06-07 15:14   ` Jan Beulich
2017-06-08 15:16     ` George Dunlap
2017-06-08 15:35       ` Jan Beulich
2017-06-08 15:37         ` George Dunlap
2017-06-08 15:44           ` Jan Beulich
2017-06-08 15:17   ` George Dunlap
2017-06-01 17:34 ` [PATCH 06/15] xen: trace IRQ enabling/disabling Dario Faggioli
2017-06-01 19:08   ` Andrew Cooper
2017-06-01 23:42     ` Dario Faggioli
2017-06-08 15:51       ` George Dunlap
2017-06-08 16:05       ` Jan Beulich
2017-06-07 11:16   ` Julien Grall
2017-06-07 15:22     ` Dario Faggioli
2017-06-09 10:51       ` Julien Grall
2017-06-09 10:53         ` Julien Grall
2017-06-09 10:55         ` George Dunlap
2017-06-09 11:00           ` Julien Grall
2017-06-08 16:01   ` George Dunlap
2017-06-08 16:11     ` Dario Faggioli [this message]
2017-06-09 10:41   ` Jan Beulich
2017-06-01 17:34 ` [PATCH 07/15] tools: tracing: handle IRQs on/off events in xentrace and xenalyze Dario Faggioli
2017-06-13 15:58   ` George Dunlap
2017-06-01 17:34 ` [PATCH 08/15] xen: trace RCU behavior Dario Faggioli
2017-06-09 10:48   ` Jan Beulich
2017-06-13 16:05   ` George Dunlap
2017-06-01 17:34 ` [PATCH 09/15] tools: tracing: handle RCU events in xentrace and xenalyze Dario Faggioli
2017-06-13 16:12   ` George Dunlap
2017-06-01 17:34 ` [PATCH 10/15] xen: trace softirqs Dario Faggioli
2017-06-09 10:51   ` Jan Beulich
2017-06-01 17:34 ` [PATCH 11/15] tools: tracing: handle RCU events in xentrace and xenalyze Dario Faggioli
2017-06-01 17:35 ` [PATCH 12/15] xen: trace tasklets Dario Faggioli
2017-06-09 10:59   ` Jan Beulich
2017-06-09 11:17     ` Dario Faggioli
2017-06-09 11:29       ` Jan Beulich
2017-06-01 17:35 ` [PATCH 13/15] tools: tracing: handle tasklets events in xentrace and xenalyze Dario Faggioli
2017-06-01 17:35 ` [PATCH 14/15] xen: trace timers Dario Faggioli
2017-06-01 17:35 ` [PATCH 15/15] tools: tracing: handle timers events in xentrace and xenalyze Dario Faggioli
2017-06-07 14:13 ` [PATCH 00/15] xen/tools: add tracing to various Xen subsystems Konrad Rzeszutek Wilk
2017-06-08 16:45   ` Dario Faggioli
2017-06-13 16:34 ` George Dunlap

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1496938276.9462.35.camel@citrix.com \
    --to=dario.faggioli@citrix.com \
    --cc=andrew.cooper3@citrix.com \
    --cc=george.dunlap@citrix.com \
    --cc=george.dunlap@eu.citrix.com \
    --cc=jbeulich@suse.com \
    --cc=jennifer.herbert@citrix.com \
    --cc=julien.grall@arm.com \
    --cc=sstabellini@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).