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

From: Stephen Rothwell
Date: Fri Apr 16 2021 - 04:26:34 EST


Hi all,

On Fri, 16 Apr 2021 17:58:06 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> 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

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