diff options
| 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 | |
| parent | 8770a9183fe18442c7cfbb56bb7e006462775a91 (diff) | |
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
| -rw-r--r-- | include/linux/cache.h | 9 | ||||
| -rw-r--r-- | include/vdso/cache.h | 15 |
2 files changed, 16 insertions, 8 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h index ca2a05682a54..e69768f50d53 100644 --- a/include/linux/cache.h +++ b/include/linux/cache.h @@ -3,16 +3,13 @@ #define __LINUX_CACHE_H #include <uapi/linux/kernel.h> +#include <vdso/cache.h> #include <asm/cache.h> #ifndef L1_CACHE_ALIGN #define L1_CACHE_ALIGN(x) __ALIGN_KERNEL(x, L1_CACHE_BYTES) #endif -#ifndef SMP_CACHE_BYTES -#define SMP_CACHE_BYTES L1_CACHE_BYTES -#endif - /** * SMP_CACHE_ALIGN - align a value to the L2 cacheline size * @x: value to align @@ -63,10 +60,6 @@ #define __ro_after_init __section(".data..ro_after_init") #endif -#ifndef ____cacheline_aligned -#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES))) -#endif - #ifndef ____cacheline_aligned_in_smp #ifdef CONFIG_SMP #define ____cacheline_aligned_in_smp ____cacheline_aligned 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 */ |