From: Peter Zijlstra <peterz@infradead.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E . McKenney" <paulmck@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
"H . Peter Anvin" <hpa@zytor.com>, Paul Turner <pjt@google.com>,
linux-api@vger.kernel.org, Christian Brauner <brauner@kernel.org>,
Florian Weimer <fw@deneb.enyo.de>,
David.Laight@aculab.com, carlos@redhat.com,
Peter Oskolkov <posk@posk.io>,
Alexander Mikhalitsyn <alexander@mihalicyn.com>
Subject: Re: [RFC PATCH v4 00/25] RSEQ node id and virtual cpu id extensions
Date: Thu, 22 Sep 2022 10:10:01 +0200 [thread overview]
Message-ID: <YywYWSIocrDDntq3@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <14ba275f-8ddc-33fc-2669-1c336436f473@efficios.com>
On Wed, Sep 21, 2022 at 03:54:18PM -0400, Mathieu Desnoyers wrote:
> On 2022-09-21 15:24, Mathieu Desnoyers wrote:
> > Extend the rseq ABI to expose a NUMA node ID and a vm_vcpu_id field.
> >
> > The NUMA node ID field allows implementing a faster getcpu(2) in libc.
> >
> > The virtual cpu id allows ideal scaling (down or up) of user-space
> > per-cpu data structures. The virtual cpu ids allocated within a memory
> > space are tracked by the scheduler, which takes into account the number
> > of concurrently running threads, thus implicitly considering the number
> > of threads, the cpu affinity, the cpusets applying to those threads, and
> > the number of logical cores on the system.
> >
> > This series is based on the v5.19 tag.
>
> Hi Peter,
>
> I'm having MTA issues at the moment. I will resend the series as soon as I
> can get hold of my sysadmin.
It landed in my inbox and Lore seems to have received a copy too; as
per:
https://lkml.kernel.org/r/14ba275f-8ddc-33fc-2669-1c336436f473@efficios.com
So I'm thinking you did manage to send out mail and all is well.
I'll try and have a look later today.
next prev parent reply other threads:[~2022-09-22 8:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-21 19:24 [RFC PATCH v4 00/25] RSEQ node id and virtual cpu id extensions Mathieu Desnoyers
2022-09-21 19:24 ` [RFC PATCH v4 01/25] rseq: Introduce feature size and alignment ELF auxiliary vector entries Mathieu Desnoyers
2022-09-21 19:24 ` [RFC PATCH v4 02/25] rseq: Introduce extensible rseq ABI Mathieu Desnoyers
2022-09-21 19:24 ` [RFC PATCH v4 03/25] rseq: Extend struct rseq with numa node id Mathieu Desnoyers
2022-09-21 19:24 ` [RFC PATCH v4 04/25] selftests/rseq: Use ELF auxiliary vector for extensible rseq Mathieu Desnoyers
2022-09-21 19:24 ` [RFC PATCH v4 05/25] selftests/rseq: Implement rseq numa node id field selftest Mathieu Desnoyers
2022-09-21 19:54 ` [RFC PATCH v4 00/25] RSEQ node id and virtual cpu id extensions Mathieu Desnoyers
2022-09-22 8:10 ` Peter Zijlstra [this message]
2022-09-22 10:59 ` Mathieu Desnoyers
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