Subject: Re: linux-next: manual merge of the rust tree with the char-misc tree

From: Stephen Rothwell <[email-masked]>
Date: Fri, 16 Apr 2021 18:26:28 +1000

Hi all,

On Fri, 16 Apr 2021 17:58:06 +1000 Stephen Rothwell <[email-masked]> wrote:
>
> Today's linux-next merge of the rust tree got a conflict in:
> 
>   include/uapi/linux/android/binder.h
> 
> between commits:
> 
>   432ff1e91694 ("binder: BINDER_FREEZE ioctl")
>   ae28c1be1e54 ("binder: BINDER_GET_FROZEN_INFO ioctl")
>   a7dc1e6f99df ("binder: tell userspace to dump current backtrace when detected oneway spamming")
> 
> from the char-misc tree and commit:
> 
>   1fed5dee5fbb ("Android: Binder IPC in Rust (WIP)")
> 
> from the rust tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> diff --cc include/uapi/linux/android/binder.h
> index 20e435fe657a,7b13c9e9aa2f..000000000000
> --- a/include/uapi/linux/android/binder.h
> +++ b/include/uapi/linux/android/binder.h
> @@@ -217,31 -217,18 +217,33 @@@ struct binder_node_info_for_ref 
>   	__u32            reserved3;
>   };
>   
>  +struct binder_freeze_info {
>  +	__u32            pid;
>  +	__u32            enable;
>  +	__u32            timeout_ms;
>  +};
>  +
>  +struct binder_frozen_status_info {
>  +	__u32            pid;
>  +	__u32            sync_recv;
>  +	__u32            async_recv;
>  +};
>  +
> - #define BINDER_WRITE_READ		_IOWR('b', 1, struct binder_write_read)
> - #define BINDER_SET_IDLE_TIMEOUT		_IOW('b', 3, __s64)
> - #define BINDER_SET_MAX_THREADS		_IOW('b', 5, __u32)
> - #define BINDER_SET_IDLE_PRIORITY	_IOW('b', 6, __s32)
> - #define BINDER_SET_CONTEXT_MGR		_IOW('b', 7, __s32)
> - #define BINDER_THREAD_EXIT		_IOW('b', 8, __s32)
> - #define BINDER_VERSION			_IOWR('b', 9, struct binder_version)
> - #define BINDER_GET_NODE_DEBUG_INFO	_IOWR('b', 11, struct binder_node_debug_info)
> - #define BINDER_GET_NODE_INFO_FOR_REF	_IOWR('b', 12, struct binder_node_info_for_ref)
> - #define BINDER_SET_CONTEXT_MGR_EXT	_IOW('b', 13, struct flat_binder_object)
> - #define BINDER_FREEZE			_IOW('b', 14, struct binder_freeze_info)
> - #define BINDER_GET_FROZEN_INFO		_IOWR('b', 15, struct binder_frozen_status_info)
> - #define BINDER_ENABLE_ONEWAY_SPAM_DETECTION	_IOW('b', 16, __u32)
> + enum {
> + 	BINDER_WRITE_READ		= _IOWR('b', 1, struct binder_write_read),
> + 	BINDER_SET_IDLE_TIMEOUT		= _IOW('b', 3, __s64),
> + 	BINDER_SET_MAX_THREADS		= _IOW('b', 5, __u32),
> + 	BINDER_SET_IDLE_PRIORITY	= _IOW('b', 6, __s32),
> + 	BINDER_SET_CONTEXT_MGR		= _IOW('b', 7, __s32),
> + 	BINDER_THREAD_EXIT		= _IOW('b', 8, __s32),
> + 	BINDER_VERSION			= _IOWR('b', 9, struct binder_version),
> + 	BINDER_GET_NODE_DEBUG_INFO	= _IOWR('b', 11, struct binder_node_debug_info),
> + 	BINDER_GET_NODE_INFO_FOR_REF	= _IOWR('b', 12, struct binder_node_info_for_ref),
> + 	BINDER_SET_CONTEXT_MGR_EXT	= _IOW('b', 13, struct flat_binder_object),
> ++	BINDER_FREEZE			= _IOW('b', 14, struct binder_freeze_info)
> ++	BINDER_GET_FROZEN_INFO		= _IOWR('b', 15, struct binder_frozen_status_info)
> ++	BINDER_ENABLE_ONEWAY_SPAM_DETECTION	= _IOW('b', 16, __u32)
> + };
>   
>   /*
>    * NOTE: Two special error codes you should check for when calling

I also needed this patch (which I will add to my merge resolution):

diff --git a/include/uapi/linux/android/binder.h b/include/uapi/linux/android/binder.h
index 49611d7309e0..9fca291e0132 100644
--- a/include/uapi/linux/android/binder.h
+++ b/include/uapi/linux/android/binder.h
@@ -240,9 +240,9 @@ enum {
 	BINDER_GET_NODE_DEBUG_INFO	= _IOWR('b', 11, struct binder_node_debug_info),
 	BINDER_GET_NODE_INFO_FOR_REF	= _IOWR('b', 12, struct binder_node_info_for_ref),
 	BINDER_SET_CONTEXT_MGR_EXT	= _IOW('b', 13, struct flat_binder_object),
-	BINDER_FREEZE			= _IOW('b', 14, struct binder_freeze_info)
-	BINDER_GET_FROZEN_INFO		= _IOWR('b', 15, struct binder_frozen_status_info)
-	BINDER_ENABLE_ONEWAY_SPAM_DETECTION	= _IOW('b', 16, __u32)
+	BINDER_FREEZE			= _IOW('b', 14, struct binder_freeze_info),
+	BINDER_GET_FROZEN_INFO		= _IOWR('b', 15, struct binder_frozen_status_info),
+	BINDER_ENABLE_ONEWAY_SPAM_DETECTION	= _IOW('b', 16, __u32),
 };
 
 /*

-- 
Cheers,
Stephen Rothwell