From: Andi Kleen <ak@linux.intel.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>,
acme@kernel.org, linux-kernel@vger.kernel.org, jolsa@kernel.org,
eranian@google.com, kan.liang@linux.intel.com,
peterz@infradead.org, alexey.budankov@linux.intel.com
Subject: Re: [PATCH v2 4/9] perf affinity: Add infrastructure to save/restore affinity
Date: Wed, 23 Oct 2019 07:52:06 -0700 [thread overview]
Message-ID: <20191023145206.GH4660@tassilo.jf.intel.com> (raw)
In-Reply-To: <20191023143049.GS22919@krava>
On Wed, Oct 23, 2019 at 04:30:49PM +0200, Jiri Olsa wrote:
> On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
> > On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa wrote:
> > > On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
> > >
> > > SNIP
> > >
> > > > +}
> > > > diff --git a/tools/perf/util/affinity.h b/tools/perf/util/affinity.h
> > > > new file mode 100644
> > > > index 000000000000..e56148607e33
> > > > --- /dev/null
> > > > +++ b/tools/perf/util/affinity.h
> > > > @@ -0,0 +1,15 @@
> > > > +// SPDX-License-Identifier: GPL-2.0
> > > > +#ifndef AFFINITY_H
> > > > +#define AFFINITY_H 1
> > > > +
> > > > +struct affinity {
> > > > + unsigned char *orig_cpus;
> > > > + unsigned char *sched_cpus;
> > >
> > > why not use cpu_set_t directly?
> >
> > Because it's too small in glibc (only 1024 CPUs) and perf already
> > supports more.
>
> nice, we're using it all over the place.. how about using bitmap_alloc?
Okay.
The other places is mainly perf record from Alexey's recent affinity changes.
These probably need to be fixed.
+Alexey
And some stuff in bench/*. That's more nice to have.
-Andi
next prev parent reply other threads:[~2019-10-23 14:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-20 17:51 Optimize perf stat for large number of events/cpus v2 Andi Kleen
2019-10-20 17:51 ` [PATCH v2 1/9] perf evsel: Always preserve errno while cleaning up perf_event_open failures Andi Kleen
2019-10-22 8:01 ` Jiri Olsa
2019-11-12 11:18 ` [tip: perf/core] " tip-bot2 for Andi Kleen
2019-10-20 17:51 ` [PATCH v2 2/9] perf evsel: Avoid close(-1) Andi Kleen
2019-10-22 8:01 ` Jiri Olsa
2019-11-12 11:18 ` [tip: perf/core] " tip-bot2 for Andi Kleen
2019-10-20 17:51 ` [PATCH v2 3/9] perf pmu: Use file system cache to optimize sysfs access Andi Kleen
2019-10-23 9:47 ` Jiri Olsa
2019-10-20 17:51 ` [PATCH v2 4/9] perf affinity: Add infrastructure to save/restore affinity Andi Kleen
2019-10-23 9:59 ` Jiri Olsa
2019-10-23 13:02 ` Andi Kleen
2019-10-23 14:30 ` Jiri Olsa
2019-10-23 14:52 ` Andi Kleen [this message]
2019-10-23 16:16 ` Alexey Budankov
2019-10-23 17:19 ` Andi Kleen
2019-10-23 18:08 ` Alexey Budankov
2019-10-23 22:37 ` Andi Kleen
2019-10-24 8:46 ` Alexey Budankov
2019-10-20 17:51 ` [PATCH v2 5/9] perf evsel: Add iterator to iterate over events ordered by CPU Andi Kleen
2019-10-20 17:51 ` [PATCH v2 6/9] perf stat: Use affinity for closing file descriptors Andi Kleen
2019-10-20 17:52 ` [PATCH v2 7/9] perf stat: Use affinity for opening events Andi Kleen
2019-10-20 17:52 ` [PATCH v2 8/9] perf stat: Use affinity for reading Andi Kleen
2019-10-20 17:52 ` [PATCH v2 9/9] perf stat: Use affinity for enabling/disabling events Andi Kleen
2019-10-23 10:30 ` Jiri Olsa
2019-10-23 13:07 ` Andi Kleen
2019-10-22 8:02 ` Optimize perf stat for large number of events/cpus v2 Jiri Olsa
2019-10-22 14:11 ` Arnaldo Carvalho de Melo
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=20191023145206.GH4660@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=acme@kernel.org \
--cc=alexey.budankov@linux.intel.com \
--cc=andi@firstfloor.org \
--cc=eranian@google.com \
--cc=jolsa@kernel.org \
--cc=jolsa@redhat.com \
--cc=kan.liang@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=peterz@infradead.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).