Re: linux-next: build failure after merge of the net-next tree

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Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:

> After merging the net-next tree, today's linux-next build (native perf)
> failed like this:
> 
> In file included from builtin-trace.c:907:
> trace/beauty/msg_flags.c: In function 'syscall_arg__scnprintf_msg_flags':
> trace/beauty/msg_flags.c:28:21: error: 'MSG_SPLICE_PAGES' undeclared (first use in this function)

I tried applying the attached patch, but it doesn't make any difference.

Any idea what I've missed?  Also, why do we have duplicates of all the kernel
headers in the tools/ directory?

David
---

commit 878ff45f5f746f6773224ff952c490b5812462f2
Author: David Howells <dhowells@xxxxxxxxxx>
Date:   Mon Jun 26 08:08:12 2023 +0100

    tools: Fix MSG_SPLICE_PAGES build error in trace tools
    
    Fix the following error:
    
    In file included from builtin-trace.c:907:
    trace/beauty/msg_flags.c: In function 'syscall_arg__scnprintf_msg_flags':
    trace/beauty/msg_flags.c:28:21: error: 'MSG_SPLICE_PAGES' undeclared (first use in this function)
       28 |         if (flags & MSG_##n) { \
          |                     ^~~~
    trace/beauty/msg_flags.c:50:9: note: in expansion of macro 'P_MSG_FLAG'
       50 |         P_MSG_FLAG(SPLICE_PAGES);
          |         ^~~~~~~~~~
    trace/beauty/msg_flags.c:28:21: note: each undeclared identifier is reported only once for each function it appears in
       28 |         if (flags & MSG_##n) { \
          |                     ^~~~
    trace/beauty/msg_flags.c:50:9: note: in expansion of macro 'P_MSG_FLAG'
       50 |         P_MSG_FLAG(SPLICE_PAGES);
          |         ^~~~~~~~~~
    
    There is no MSG_SPLICE_PAGES in tools/perf/trace/beauty/include/linux/socket.h
    
    Fixes: b848b26c6672 ("net: Kill MSG_SENDPAGE_NOTLAST")
    Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230626112847.2ef3d422@xxxxxxxxxxxxxxxx/
    Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
    cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
    cc: Eric Dumazet <edumazet@xxxxxxxxxx>
    cc: Jakub Kicinski <kuba@xxxxxxxxxx>
    cc: Paolo Abeni <pabeni@xxxxxxxxxx>
    cc: Jens Axboe <axboe@xxxxxxxxx>
    cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
    cc: bpf@xxxxxxxxxxxxxxx
    cc: dccp@xxxxxxxxxxxxxxx
    cc: linux-afs@xxxxxxxxxxxxxxxxxxx
    cc: linux-arm-msm@xxxxxxxxxxxxxxx
    cc: linux-can@xxxxxxxxxxxxxxx
    cc: linux-crypto@xxxxxxxxxxxxxxx
    cc: linux-doc@xxxxxxxxxxxxxxx
    cc: linux-hams@xxxxxxxxxxxxxxx
    cc: linux-perf-users@xxxxxxxxxxxxxxx
    cc: linux-rdma@xxxxxxxxxxxxxxx
    cc: linux-sctp@xxxxxxxxxxxxxxx
    cc: linux-wpan@xxxxxxxxxxxxxxx
    cc: linux-x25@xxxxxxxxxxxxxxx
    cc: mptcp@xxxxxxxxxxxxxxx
    cc: netdev@xxxxxxxxxxxxxxx
    cc: rds-devel@xxxxxxxxxxxxxx
    cc: tipc-discussion@xxxxxxxxxxxxxxxxxxxxx
    cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx

diff --git a/tools/perf/trace/beauty/include/linux/socket.h b/tools/perf/trace/beauty/include/linux/socket.h
index 3bef212a24d7..77cb707a566a 100644
--- a/tools/perf/trace/beauty/include/linux/socket.h
+++ b/tools/perf/trace/beauty/include/linux/socket.h
@@ -326,6 +326,7 @@ struct ucred {
 					  */
 
 #define MSG_ZEROCOPY	0x4000000	/* Use user data in kernel path */
+#define MSG_SPLICE_PAGES 0x8000000	/* Splice the pages from the iterator in sendmsg() */
 #define MSG_FASTOPEN	0x20000000	/* Send data in TCP SYN */
 #define MSG_CMSG_CLOEXEC 0x40000000	/* Set close_on_exec for file
 					   descriptor received through






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