linux-kernel - Re: [PATCH 2/2] selftests/tracing: Fix to check the required syscall event

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Date: Fri, 31 May 2024 08:41:00 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
 Steven Rostedt <rostedt@...dmis.org>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org, Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH 2/2] selftests/tracing: Fix to check the required syscall
 event

On 5/31/24 03:43, Masami Hiramatsu (Google) wrote:
> From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> 
> Since test_duplicates.tc depends on syscalls/sys_enter_openat event,
> it must add the event file to `requires`.
> Without this fix, the test fails if CONFIG_FTRACE_SYSCALLS=n.
> 
> Fixes: 297e1dcdca3d ("selftests/ftrace: Add selftest for testing duplicate eprobes and kprobes")
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> ---
>   .../ftrace/test.d/dynevent/test_duplicates.tc      |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
> index d3a79da215c8..5f72abe6fa79 100644
> --- a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
> +++ b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
> @@ -1,7 +1,7 @@
>   #!/bin/sh
>   # SPDX-License-Identifier: GPL-2.0
>   # description: Generic dynamic event - check if duplicate events are caught
> -# requires: dynamic_events "e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]":README
> +# requires: dynamic_events "e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]":README events/syscalls/sys_enter_openat
>   
>   echo 0 > events/enable
>   
> 
> 

This change is already in mainline. I sent the fix up in my 6.10-rc1 pr?
The short log is a slightly different:

commit f6c3c83db1d939ebdb8c8922748ae647d8126d91
Author: Masami Hiramatsu (Google) <mhiramat@...nel.org>
Date:   Tue May 21 09:00:22 2024 +0900

     selftests/ftrace: Fix to check required event file
     
     The dynevent/test_duplicates.tc test case uses `syscalls/sys_enter_openat`
     event for defining eprobe on it. Since this `syscalls` events depend on
     CONFIG_FTRACE_SYSCALLS=y, if it is not set, the test will fail.
     
     Add the event file to `required` line so that the test will return
     `unsupported` result.
     
     Fixes: 297e1dcdca3d ("selftests/ftrace: Add selftest for testing duplicate eprobes and kprobes")
     Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
     Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>

thanks,
-- Shuah