From: Dave Hansen <dave.hansen@linux.intel.com>
To: kemi <kemi.wang@intel.com>, Michal Hocko <mhocko@kernel.org>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>,
Kees Cook <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Mel Gorman <mgorman@techsingularity.net>,
Johannes Weiner <hannes@cmpxchg.org>,
Christopher Lameter <cl@linux.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Vlastimil Babka <vbabka@suse.cz>, Tim Chen <tim.c.chen@intel.com>,
Andi Kleen <andi.kleen@intel.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Ying Huang <ying.huang@intel.com>, Aaron Lu <aaron.lu@intel.com>,
Proc sysctl <linux-fsdevel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/3] mm: Handle numa statistics distinctively based-on different VM stats modes
Date: Sun, 17 Sep 2017 21:13:13 -0700 [thread overview]
Message-ID: <1bd90605-c765-ca27-b8ee-ca803a8bcdea@linux.intel.com> (raw)
In-Reply-To: <26bd25c8-294f-d3cc-8ba2-845a6da33fe5@intel.com>
On 09/17/2017 08:07 PM, kemi wrote:
>>> + if (vmstat_mode) {
>>> + if (vmstat_mode == VMSTAT_COARSE_MODE)
>>> + return;
>>> + } else if (disable_zone_statistics)
>>> + return;
>>> +
>>> if (z->node != numa_node_id())
>>> local_stat = NUMA_OTHER;
>>
>> A jump label could make this completely out of the way for the case
>> where every single cycle matters.
>
> Could you be more explicit for how to implement it here. Thanks very much.
Take a look at include/linux/jump_label.h.
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next prev parent reply other threads:[~2017-09-18 4:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-15 9:23 [PATCH 0/3] Handle zone statistics distinctively based-on Kemi Wang
2017-09-15 9:23 ` [PATCH 1/3] mm, sysctl: make VM stats configurable Kemi Wang
2017-09-15 11:49 ` Michal Hocko
2017-09-15 14:16 ` Dave Hansen
2017-09-15 14:28 ` Michal Hocko
2017-09-18 2:44 ` kemi
2017-09-18 5:50 ` Michal Hocko
2017-09-16 2:10 ` Wang, Kemi
2017-09-18 3:22 ` kemi
2017-09-18 5:50 ` Michal Hocko
2017-09-15 9:23 ` [PATCH 2/3] mm: Handle numa statistics distinctively based-on different VM stats modes Kemi Wang
2017-09-15 11:50 ` Michal Hocko
2017-09-18 3:07 ` kemi
2017-09-18 4:13 ` Dave Hansen [this message]
2017-09-18 5:05 ` kemi
2017-09-15 9:23 ` [PATCH 3/3] sysctl/vm.txt: Update document Kemi Wang
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