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| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2025-03-03 12:11:03 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-03-08 14:37:39 +0100 |
| commit | 0704bf439655c1f82ff7e623b1124a3c1cb8c907 (patch) | |
| tree | 7f189f597e818f66e51c941cc0651ac2831a15eb /include/vdso/cache.h | |
| parent | selftests: vDSO: vdso_standalone_test_x86: Switch to nolibc (diff) | |
| download | linux-0704bf439655c1f82ff7e623b1124a3c1cb8c907.tar.gz linux-0704bf439655c1f82ff7e623b1124a3c1cb8c907.zip | |
vdso: Introduce vdso/cache.h
The vDSO implementation can only include headers from the vdso/
namespace. To enable the usage of ____cacheline_aligned from
the vDSO, move it and its dependencies into a new header vdso/cache.h.
Keep compatibility by including vdso/cache.h from linux/cache.h.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-1-c1b5c69a166f@linutronix.de
Diffstat (limited to 'include/vdso/cache.h')
| -rw-r--r-- | include/vdso/cache.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/vdso/cache.h b/include/vdso/cache.h new file mode 100644 index 000000000000..f89d48304bf8 --- /dev/null +++ b/include/vdso/cache.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __VDSO_CACHE_H +#define __VDSO_CACHE_H + +#include <asm/cache.h> + +#ifndef SMP_CACHE_BYTES +#define SMP_CACHE_BYTES L1_CACHE_BYTES +#endif + +#ifndef ____cacheline_aligned +#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES))) +#endif + +#endif /* __VDSO_ALIGN_H */ |