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| author | Sean Paul <seanpaul@chromium.org> | 2018-02-16 15:47:43 -0500 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-02-16 15:47:43 -0500 |
| commit | d4da404f36b24b089d20db1fb27d8f99cb66f409 (patch) | |
| tree | 349c4b792281826652eb9e6d7a46ed6622dc90de /include/linux/sync_core.h | |
| parent | fa4127c5eb8def998fd8a471d51a4f2560dea0a2 (diff) | |
| parent | 933519a5a269d8460450545adefcb5caec622cac (diff) | |
Merge airlied/drm-next into drm-misc-next
Backmerge 4.15 and hdcp topic branch
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'include/linux/sync_core.h')
| -rw-r--r-- | include/linux/sync_core.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/sync_core.h b/include/linux/sync_core.h new file mode 100644 index 000000000000..013da4b8b327 --- /dev/null +++ b/include/linux/sync_core.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_SYNC_CORE_H +#define _LINUX_SYNC_CORE_H + +#ifdef CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE +#include <asm/sync_core.h> +#else +/* + * This is a dummy sync_core_before_usermode() implementation that can be used + * on all architectures which return to user-space through core serializing + * instructions. + * If your architecture returns to user-space through non-core-serializing + * instructions, you need to write your own functions. + */ +static inline void sync_core_before_usermode(void) +{ +} +#endif + +#endif /* _LINUX_SYNC_CORE_H */ + |