linux-kernel - Re: [PATCH v4 02/10] user_events: Add minimal support for trace

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Message-Id: <20211108113225.664c0594e0ca100e458de92b@kernel.org>
Date:   Mon, 8 Nov 2021 11:32:25 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Beau Belgrave <beaub@...ux.microsoft.com>, rostedt@...dmis.org,
        mhiramat@...nel.org, kbuild-all@...ts.01.org,
        linux-trace-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 02/10] user_events: Add minimal support for
 trace_event into ftrace

On Fri, 5 Nov 2021 05:34:31 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Beau,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on rostedt-trace/for-next]
> [also build test ERROR on shuah-kselftest/next linux/master linus/master v5.15 next-20211104]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Beau-Belgrave/user_events-Enable-user-processes-to-create-and-write-to-trace-events/20211105-010650
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
> config: powerpc-allmodconfig (attached as .config)
> compiler: powerpc-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/0day-ci/linux/commit/da0961ad45aa1192b47b8a80de6b17437434ae4a
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Beau-Belgrave/user_events-Enable-user-processes-to-create-and-write-to-trace-events/20211105-010650
>         git checkout da0961ad45aa1192b47b8a80de6b17437434ae4a
>         # save the attached .config to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash kernel/trace/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>    kernel/trace/trace_events_user.c: In function 'user_event_parse':
> >> kernel/trace/trace_events_user.c:665:9: error: too few arguments to function 'dyn_event_add'
>      665 |         dyn_event_add(&user->devent);
>          |         ^~~~~~~~~~~~~
>    In file included from kernel/trace/trace_events_user.c:23:
>    kernel/trace/trace_dynevent.h:79:19: note: declared here
>       79 | static inline int dyn_event_add(struct dyn_event *ev,
>          |                   ^~~~~~~~~~~~~

You need to pass &user->call too :)

Thank you,

-- 
Masami Hiramatsu <mhiramat@...nel.org>