linux-kernel - Re: [PATCH v3 0/2] perf: measure page fault duration in perf trace

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Message-ID: <20161206144624.GC2399@kernel.org>
Date:   Tue, 6 Dec 2016 11:46:24 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Alexis Berlemont <alexis.berlemont@...il.com>
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Subject: Re: [PATCH v3 0/2] perf: measure page fault duration in perf trace

Em Tue, Dec 06, 2016 at 12:40:06AM +0100, Alexis Berlemont escreveu:
> Alexis Berlemont wrote:
> > Hi,
> > 
> > Here is another attempt to make the perf-trace subcommand print the
> > page fault durations.
> > 
> > This solution is based on static tracepoints and it was necessary to
> > add 2 more tracepoints. I understood that adding tracepoints is a
> > questionable solution; I can try something else if someone has another
> > idea.
> >
> 
> Could you indicate me a way to improve these patches so as to move
> forward ?

I have to test this, and review PeterZ latest comment about it, to see
if all is well with him by now, Peter?

- Arnaldo
 
> Regards,
> 
> Alexis.
> 
> > Alexis.
> > 
> > Alexis Berlemont (2):
> >   perf, x86-mm: declare page-faults tracepoints like irq-vectors ones
> >   perf: add page fault duration measures in perf trace
> > 
> >  arch/x86/include/asm/trace/exceptions.h |  17 ++-
> >  arch/x86/mm/fault.c                     |  17 ++-
> >  tools/perf/Documentation/perf-trace.txt |   4 +-
> >  tools/perf/builtin-trace.c              | 231 ++++++++++++++++++++++++++++----
> >  4 files changed, 238 insertions(+), 31 deletions(-)
> > 
> > -- 
> > 2.10.2
> >