Messages in this thread Patch in this message | | | From | Zach Brown <> | Subject | [PATCH 3/6] syslet: introduce abi structs | Date | Thu, 6 Dec 2007 15:20:16 -0800 |
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This patch adds the architecture independent structures of the syslet ABI.
Signed-off-by: Zach Brown <zach.brown@oracle.com>
diff --git a/include/linux/syslet-abi.h b/include/linux/syslet-abi.h new file mode 100644 index 0000000..a8bc1a3 --- /dev/null +++ b/include/linux/syslet-abi.h @@ -0,0 +1,34 @@ +#ifndef _LINUX_SYSLET_ABI_H +#define _LINUX_SYSLET_ABI_H + +#include <asm/syslet-abi.h> /* for struct syslet_frame */ + +struct syslet_args { + u64 completion_ring_ptr; + u64 caller_data; + struct syslet_frame frame; +}; + +struct syslet_completion { + u64 status; + u64 caller_data; +}; + +/* + * The ring follows the "wrapping" convention as described by Andrew at: + * http://lkml.org/lkml/2007/4/11/276 + * The head is updated by the kernel as completions are added and the + * tail is updated by userspace as completions are removed. + * + * The number of elements must be a power of two and the ring must be + * aligned to a u64. + */ +struct syslet_ring { + u32 kernel_head; + u32 user_tail; + u32 elements; + u32 wait_group; + struct syslet_completion comp[0]; +}; + +#endif -- 1.5.2.2
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