From: Dave Hansen <dave.hansen@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Alison Schofield <alison.schofield@intel.com>,
Ingo Molnar <mingo@kernel.org>, Tony Luck <tony.luck@intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
"H. Peter Anvin" <hpa@linux.intel.com>,
Borislav Petkov <bp@alien8.de>,
David Rientjes <rientjes@google.com>,
Igor Mammedov <imammedo@redhat.com>,
Prarit Bhargava <prarit@redhat.com>,
brice.goglin@gmail.com, x86@kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] x86,sched: allow topologies where NUMA nodes share an LLC
Date: Thu, 29 Mar 2018 09:25:21 -0700 [thread overview]
Message-ID: <224bbc83-125d-0507-92af-5b6b4af62834@linux.intel.com> (raw)
In-Reply-To: <20180329160914.GR4082@hirez.programming.kicks-ass.net>
On 03/29/2018 09:09 AM, Peter Zijlstra wrote:
> On Thu, Mar 29, 2018 at 07:34:58AM -0700, Dave Hansen wrote:
>> What should we say, though?
>>
>> /*
>> * false means 'c' does not share the LLC of 'o'.
>> * Note: this decision gets reflected all the way
>> * out to userspace
>> */
>> return false;
> That works, I suppose. You might want to put in a refernce to wherever
> it is you shrink llc-size such that cache-per-cpu remains invariant.
Hmm, if we shrink llc-size by splitting it, do we also need to create a
unique "id" for each slice?
next prev parent reply other threads:[~2018-03-29 16:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-29 0:00 [PATCH v3] x86,sched: allow topologies where NUMA nodes share an LLC Alison Schofield
2018-03-29 13:16 ` Thomas Gleixner
2018-03-29 13:45 ` Dave Hansen
2018-03-29 13:57 ` Peter Zijlstra
2018-03-29 13:47 ` Peter Zijlstra
2018-03-29 14:34 ` Dave Hansen
2018-03-29 16:09 ` Peter Zijlstra
2018-03-29 16:25 ` Dave Hansen [this message]
2018-03-29 16:29 ` Luck, Tony
2018-03-29 14:37 ` Dave Hansen
2018-03-29 14:55 ` Peter Zijlstra
2018-03-30 3:20 ` kbuild test robot
2018-03-30 17:34 ` Alison Schofield
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