From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Alex Shi <alex.shi@intel.com>
Cc: Jan Beulich <JBeulich@suse.com>,
borislav.petkov@amd.com, arnd@arndb.de, akinobu.mita@gmail.com,
eric.dumazet@gmail.com, fweisbec@gmail.com, rostedt@goodmis.org,
hughd@google.com, jeremy@goop.org, len.brown@intel.com,
tony.luck@intel.com, yongjie.ren@intel.com,
kamezawa.hiroyu@jp.fujitsu.com, seto.hidetoshi@jp.fujitsu.com,
penberg@kernel.org, yinghai@kernel.org, tglx@linutronix.de,
akpm@linux-foundation.org, ak@linux.intel.com, luto@mit.edu,
avi@redhat.com, dhowells@redhat.com, mingo@redhat.com,
riel@redhat.com, cpw@sgi.com, steiner@sgi.com,
linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk,
hpa@zytor.com, Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblings of SMT
Date: Thu, 24 May 2012 10:42:50 +0200 [thread overview]
Message-ID: <1337848970.9783.72.camel@laptop> (raw)
In-Reply-To: <4FBDF200.7060608@intel.com>
On Thu, 2012-05-24 at 16:32 +0800, Alex Shi wrote:
> So, I use cpumask_t in stack.
cpumask_t is 512 bytes with NR_CPUS=4096, that's generally considered
too big to be on stack.
A number of people spend a lot of time removing cpumask_t from stacks a
while ago, I'm very sure they'll not be happy if you're going to add it
back.
Rusty, what was the plan on removing cpumask_t altogether?
next prev parent reply other threads:[~2012-05-24 8:43 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-23 14:15 [PATCH v7 0/8] x86 tlb optimisations Alex Shi
2012-05-23 14:15 ` [PATCH v7 1/8] x86/tlb_info: get last level TLB entry number of CPU Alex Shi
2012-05-23 14:15 ` [PATCH v7 2/8] x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range Alex Shi
2012-05-23 14:51 ` Jan Beulich
2012-05-24 6:41 ` Alex Shi
2012-05-24 8:12 ` Jan Beulich
2012-05-24 8:55 ` Alex Shi
2012-05-24 9:44 ` Jan Beulich
2012-05-24 14:36 ` Alex Shi
2012-05-25 2:43 ` Alex Shi
2012-05-23 14:15 ` [PATCH v7 3/8] x86/tlb: fall back to flush all when meet a THP large page Alex Shi
2012-05-23 14:15 ` [PATCH v7 4/8] x86/tlb: add tlb_flushall_shift for specific CPU Alex Shi
2012-05-23 14:15 ` [PATCH v7 5/8] x86/tlb: enable tlb flush range support for generic mmu and x86 Alex Shi
2012-05-23 14:15 ` [PATCH v7 6/8] x86/tlb: add tlb_flushall_shift knob into debugfs Alex Shi
2012-05-23 14:15 ` [PATCH v7 7/8] x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR Alex Shi
2012-05-23 14:15 ` [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblings of SMT Alex Shi
2012-05-23 15:05 ` Jan Beulich
2012-05-23 17:09 ` Peter Zijlstra
2012-05-23 17:15 ` Peter Zijlstra
2012-05-24 1:46 ` Andrew Lutomirski
2012-05-24 5:12 ` Alex Shi
2012-05-24 6:04 ` Borislav Petkov
2012-05-24 7:40 ` Peter Zijlstra
2012-05-24 13:19 ` Andrew Lutomirski
2012-05-24 13:23 ` Peter Zijlstra
2012-05-24 13:39 ` Arjan van de Ven
2012-05-24 13:54 ` Alex Shi
2012-05-24 14:18 ` Arjan van de Ven
2012-05-24 14:32 ` Alex Shi
2012-05-24 15:03 ` H. Peter Anvin
2012-05-25 0:24 ` Alex Shi
2012-05-24 16:08 ` Arjan van de Ven
2012-05-25 0:28 ` Alex Shi
2012-05-25 0:46 ` Arjan van de Ven
2012-05-24 8:32 ` Alex Shi
2012-05-24 8:42 ` Peter Zijlstra [this message]
2012-05-24 8:48 ` Alex Shi
2012-05-24 11:35 ` Rusty Russell
2012-05-24 14:03 ` Alex Shi
2012-05-24 9:27 ` Alex Shi
2012-05-24 9:42 ` Peter Zijlstra
2012-05-24 9:46 ` Jan Beulich
2012-05-24 14:06 ` Alex Shi
2012-05-24 8:43 ` Peter Zijlstra
2012-05-24 8:48 ` Jan Beulich
2012-05-24 9:02 ` Alex Shi
2012-05-24 9:45 ` Jan Beulich
2012-05-24 15:04 ` H. Peter Anvin
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