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| author | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
|---|---|---|
| committer | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
| commit | 348fa3f6871f56a37dcd16c99ca98118c6d79a38 (patch) | |
| tree | 6fcae7785bae4ffb838fd6549f7d01ba6abf0763 /backport-include/asm/atomic.h | |
Backports v4.19.24
Backports generated by toradex backports 515a1fa55cda2b1d952872e1786857481bd54fcc
against mainline kernel tag v4.19.24
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Diffstat (limited to 'backport-include/asm/atomic.h')
| -rw-r--r-- | backport-include/asm/atomic.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/backport-include/asm/atomic.h b/backport-include/asm/atomic.h new file mode 100644 index 0000000..31bddc6 --- /dev/null +++ b/backport-include/asm/atomic.h @@ -0,0 +1,19 @@ +#ifndef __BACKPORT_ASM_ATOMIC_H +#define __BACKPORT_ASM_ATOMIC_H +#include_next <asm/atomic.h> +#include <linux/version.h> +#include <asm/barrier.h> + +#if LINUX_VERSION_IS_LESS(3,1,0) +/* + * In many versions, several architectures do not seem to include an + * atomic64_t implementation, and do not include the software emulation from + * asm-generic/atomic64_t. + * Detect and handle this here. + */ +#if (!defined(ATOMIC64_INIT) && !defined(CONFIG_X86) && !(defined(CONFIG_ARM) && !defined(CONFIG_GENERIC_ATOMIC64))) +#include <asm-generic/atomic64.h> +#endif +#endif + +#endif /* __BACKPORT_ASM_ATOMIC_H */ |