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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/powerpc/include/asm/current.h | |
| parent | Initial commit. (diff) | |
| download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/include/asm/current.h')
| -rw-r--r-- | arch/powerpc/include/asm/current.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/current.h b/arch/powerpc/include/asm/current.h new file mode 100644 index 000000000..bbfb94800 --- /dev/null +++ b/arch/powerpc/include/asm/current.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_POWERPC_CURRENT_H +#define _ASM_POWERPC_CURRENT_H +#ifdef __KERNEL__ + +/* + */ + +struct task_struct; + +#ifdef __powerpc64__ +#include <linux/stddef.h> +#include <asm/paca.h> + +static inline struct task_struct *get_current(void) +{ + struct task_struct *task; + + /* get_current can be cached by the compiler, so no volatile */ + asm ("ld %0,%1(13)" + : "=r" (task) + : "i" (offsetof(struct paca_struct, __current))); + + return task; +} +#define current get_current() + +#else + +/* + * We keep `current' in r2 for speed. + */ +register struct task_struct *current asm ("r2"); + +#endif + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_CURRENT_H */ |