Missing Linux Kernel Headers

Dani · December 17, 2020, 12:45am

My question is why Clear Linux does not include all the linux kernel headers? My second question is what is the best way to go about adding them?

I was trying to use the <linux/slab.h> header and I noticed it is not in the clear linux system.

doct0rHu · December 17, 2020, 2:05am

Is this really hard to find?

github.com

torvalds/linux/blob/accefff5b547a9a1d959c7e76ad539bf2480e78b/mm/slab.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MM_SLAB_H
#define MM_SLAB_H
/*
 * Internal slab definitions
 */

#ifdef CONFIG_SLOB
/*
 * Common fields provided in kmem_cache by all slab allocators
 * This struct is either used directly by the allocator (SLOB)
 * or the allocator must include definitions for all fields
 * provided in kmem_cache_common in their definition of kmem_cache.
 *
 * Once we can do anonymous structs (C11 standard) we could put a
 * anonymous struct definition in these allocators so that the
 * separate allocations in the kmem_cache structure of SLAB and
 * SLUB is no longer needed.
 */
struct kmem_cache {

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Dani · December 17, 2020, 5:20pm

Maybe I misunderstand what you’re trying to say doc. I understand the file is in linux. However I do not think it is in the clear linux build. For example, when I type:
$ locate slab.h
I only get:
/usr/include/dns/rdataslab.h

doct0rHu · December 17, 2020, 7:11pm

swupd search-file slab.h

You can for example install linux-dev bundle

Dani · December 17, 2020, 8:43pm

Thank you! It hadn’t occurred to me to use the swupd to get it. I has assumed since it wasn’t already installed that it’s not possible to install easily.

Dani · December 17, 2020, 10:30pm

For anyone else who sees this, doc’s answer worked.
I also recommend looking at this: https://docs.01.org/clearlinux/latest/guides/kernel/kernel-modules.html