All of lore.kernel.org
 help / color / mirror / Atom feed
From: Matthew Wilcox <willy@infradead.org>
To: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>,
	cl@linux.com, penberg@kernel.org, rientjes@google.com,
	iamjoonsoo.kim@lge.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported
Date: Mon, 10 May 2021 16:44:09 +0100	[thread overview]
Message-ID: <YJlUyc8t7MoGTFTe@casper.infradead.org> (raw)
In-Reply-To: <20210510150230.GA74915@hyeyoo>

On Tue, May 11, 2021 at 12:02:30AM +0900, Hyeonggon Yoo wrote:
> @@ -382,8 +385,8 @@ static __always_inline unsigned int kmalloc_index(size_t size)
>  	if (size <=  8 * 1024 * 1024) return 23;
>  	if (size <=  16 * 1024 * 1024) return 24;
>  	if (size <=  32 * 1024 * 1024) return 25;
> -	if (size <=  64 * 1024 * 1024) return 26;
> -	BUG();
> +
> +	BUILD_BUG_ON_MSG(1, "unexpected size in kmalloc_index()");

we're being encouraged to use static_assert() these days.
https://en.cppreference.com/w/c/language/_Static_assert


  parent reply	other threads:[~2021-05-10 15:45 UTC|newest]

Thread overview: 21+ 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
2021-05-09  5:33   ` Hyeonggon Yoo
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 15:15               ` 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             ` Matthew Wilcox [this message]
2021-05-11  3:03               ` [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported Hyeonggon Yoo
2021-05-11  8:33                 ` Vlastimil Babka

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YJlUyc8t7MoGTFTe@casper.infradead.org \
    --to=willy@infradead.org \
    --cc=42.hyeyoo@gmail.com \
    --cc=cl@linux.com \
    --cc=iamjoonsoo.kim@lge.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=penberg@kernel.org \
    --cc=rientjes@google.com \
    --cc=vbabka@suse.cz \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.