From: "H. Peter Anvin" <hpa@zytor.com>
To: Thomas Gleixner <tglx@linutronix.de>, Andy Lutomirski <luto@kernel.org>
Cc: "Bae, Chang Seok" <chang.seok.bae@intel.com>,
Ingo Molnar <mingo@kernel.org>, Andi Kleen <ak@linux.intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
"Metzger, Markus T" <markus.t.metzger@intel.com>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v4 7/7] x86/vdso: Move out the CPU number store
Date: Mon, 25 Jun 2018 11:00:46 -0700 [thread overview]
Message-ID: <e006b351-a2d7-e269-4e1f-d5ffa67d25d6@zytor.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1806251739450.1821@nanos.tec.linutronix.de>
On 06/25/18 08:40, Thomas Gleixner wrote:
> On Fri, 22 Jun 2018, Andy Lutomirski wrote:
>
>> On Fri, Jun 22, 2018 at 11:02 AM Bae, Chang Seok
>> <chang.seok.bae@intel.com> wrote:
>>>
>>>> Still setup_cpu_number() sucks.
>>>
>>> How about setup_cpu_and_node_number()?
>>
>> setup_fast_cpu_node_nr()? setup_cpunr_regs()? I don't have any
>> brilliant ideas. Thomas?
>
> It's really hard to find a good one. setup_cpu_node_cache() might work, but
> it's not brilliant either.
>
Since this applies to the getcpu(2) system call (in addition to the
kernel usage), perhaps setup_getcpu()?
-hpa
next prev parent reply other threads:[~2018-06-25 18:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 23:14 [PATCH v4 0/7] x86: infrastructure to enable FSGSBASE Chang S. Bae
2018-06-20 23:15 ` [PATCH v4 1/7] x86/fsgsbase/64: Introduce FS/GS base helper functions Chang S. Bae
2018-06-22 14:28 ` Thomas Gleixner
2018-06-22 14:50 ` Andy Lutomirski
2018-06-22 15:39 ` Thomas Gleixner
2018-06-22 16:08 ` Andy Lutomirski
2018-06-22 18:09 ` Bae, Chang Seok
2018-06-20 23:15 ` [PATCH v4 2/7] x86/fsgsbase/64: Make ptrace read FS/GS base accurately Chang S. Bae
2018-06-22 14:37 ` Thomas Gleixner
2018-06-20 23:15 ` [PATCH v4 3/7] x86/fsgsbase/64: Use FS/GS base helpers in core dump Chang S. Bae
2018-06-22 14:43 ` Thomas Gleixner
2018-06-20 23:15 ` [PATCH v4 4/7] x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to Chang S. Bae
2018-06-22 14:32 ` Thomas Gleixner
2018-06-20 23:15 ` [PATCH v4 5/7] x86/segments/64: Rename PER_CPU segment to CPU_NUMBER Chang S. Bae
2018-06-22 14:32 ` Thomas Gleixner
2018-06-20 23:15 ` [PATCH v4 6/7] x86/vdso: Introduce CPU number helper functions Chang S. Bae
2018-06-22 15:14 ` Thomas Gleixner
2018-06-22 18:46 ` Bae, Chang Seok
2018-06-22 19:07 ` Thomas Gleixner
2018-06-20 23:15 ` [PATCH v4 7/7] x86/vdso: Move out the CPU number store Chang S. Bae
2018-06-22 15:18 ` Thomas Gleixner
2018-06-22 16:11 ` Andy Lutomirski
2018-06-22 16:18 ` Thomas Gleixner
2018-06-22 18:02 ` Bae, Chang Seok
2018-06-22 22:02 ` Andy Lutomirski
2018-06-25 15:40 ` Thomas Gleixner
2018-06-25 18:00 ` H. Peter Anvin [this message]
2018-06-25 19:40 ` Thomas Gleixner
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