From: "H. Peter Anvin" <hpa@zytor.com>
To: Matthew Wilcox <willy@infradead.org>, ksummit@lists.linux.dev
Subject: Re: [TECH TOPIC] Implementing malloc
Date: Mon, 29 Jun 2026 09:48:25 -0700 [thread overview]
Message-ID: <c48a77db-98a3-4860-ab30-bcbbe0884baa@zytor.com> (raw)
In-Reply-To: <akKBVsFBro_4QM74@casper.infradead.org>
On 2026-06-29 07:29, Matthew Wilcox wrote:
> malloc() is a standard part of the C library. Yet we force new Linux
> programmers to learn the difference between vmalloc(), kmalloc() and
> kvmalloc(). They even have to acquire an understanding of the difference
> between GFP_KERNEL and GFP_ATOMIC. If they are particularly unlucky,
> they may have to understand other combinations of GFP flags.
You *NEED* to understand that if you are going to program kernel code. There
probably isn't anything more important, *really*.
The kernel is a memory manager first, a scheduler second, all else is commentary.
-hpa
next prev parent reply other threads:[~2026-06-29 16:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 14:29 [TECH TOPIC] Implementing malloc Matthew Wilcox
2026-06-29 15:07 ` Dan Carpenter
2026-06-29 15:21 ` H. Peter Anvin
2026-06-29 15:31 ` Matthew Wilcox
2026-06-29 16:00 ` Vlastimil Babka (SUSE)
2026-06-29 16:37 ` H. Peter Anvin
2026-06-29 16:48 ` Alexey Dobriyan
2026-06-29 16:48 ` H. Peter Anvin [this message]
2026-06-29 18:19 ` Matthew Wilcox
2026-06-29 18:22 ` H. Peter Anvin
2026-06-29 18:29 ` Mark Brown
2026-06-29 18:37 ` Vlastimil Babka (SUSE)
2026-06-30 18:53 ` Steven Rostedt
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