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vdso/datastore: Always provide symbol declarations

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Allow callers to easily reference these symbols in code that is built
even when the generic datastore is disabled.

As there are no good default no-op variants of these symbols, do not
provide stubs but require users to have their own fallback handling
using IS_ENABLED(CONFIG_HAVE_GENERIC_VDSO).

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-2-2f79dcd6c78f@linutronix.de
This commit is contained in:
Thomas Weißschuh 2026-05-21 08:53:16 +02:00 committed by Thomas Gleixner
parent facdd1b82a
commit 551f209164
1 changed files with 1 additions and 1 deletions
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2
include/linux/vdso_datastore.h
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@ -2,12 +2,12 @@
#ifndef _LINUX_VDSO_DATASTORE_H
#define _LINUX_VDSO_DATASTORE_H
#ifdef CONFIG_HAVE_GENERIC_VDSO
#include <linux/mm_types.h>
extern const struct vm_special_mapping vdso_vvar_mapping;
struct vm_area_struct *vdso_install_vvar_mapping(struct mm_struct *mm, unsigned long addr);
#ifdef CONFIG_HAVE_GENERIC_VDSO
void __init vdso_setup_data_pages(void);
#else /* !CONFIG_HAVE_GENERIC_VDSO */
static inline void vdso_setup_data_pages(void) { }