From: Matthew Wilcox <willy@infradead.org>
To: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: cl@linux.com, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, vbabka@suse.cz, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: kmalloc_index: remove case when size is more than 32MB
Date: Sun, 9 May 2021 00:19:40 +0100 [thread overview]
Message-ID: <YJccjBMBiwLqFrB8@casper.infradead.org> (raw)
In-Reply-To: <20210508221328.7338-1-42.hyeyoo@gmail.com>
On Sun, May 09, 2021 at 07:13:28AM +0900, Hyeonggon Yoo wrote:
> the return value of kmalloc_index is used as index of kmalloc_caches,
it doesn't matter. every few weeks somebody posts a patch to "optimise"
kmalloc_index, failing to appreciate that it's only ever run at compile
time because it's all under __builtin_constant_p().
next prev parent reply other threads:[~2021-05-08 23:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-08 22:13 [PATCH] mm: kmalloc_index: remove case when size is more than 32MB Hyeonggon Yoo
2021-05-08 23:19 ` Matthew Wilcox [this message]
2021-05-09 5:33 ` Hyeonggon Yoo
2021-05-10 10:09 ` Vlastimil Babka
2021-05-10 13:58 ` Hyeonggon Yoo
2021-05-10 14:04 ` Vlastimil Babka
2021-05-10 15:02 ` [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported Hyeonggon Yoo
2021-05-10 15:15 ` Christoph Lameter
2021-05-10 15:21 ` Vlastimil Babka
2021-05-11 3:09 ` Hyeonggon Yoo
2021-05-10 15:19 ` Vlastimil Babka
2021-05-10 15:38 ` Hyeonggon Yoo
2021-05-11 8:36 ` Vlastimil Babka
2021-05-11 8:37 ` Vlastimil Babka
2021-05-11 9:14 ` Hyeonggon Yoo
2021-05-11 2:59 ` [PATCH v3] mm: change run-time assertion in kmalloc_index() to compile-time Hyeonggon Yoo
2021-05-10 15:44 ` [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported Matthew Wilcox
2021-05-11 3:03 ` Hyeonggon Yoo
2021-05-11 8:33 ` Vlastimil Babka
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