Re: [trace:ftrace/core 1/3] include/trace/syscall.h:39:6: error: 'TIF_SYSCALL_TRACEPOINT' undeclared

[Steven Rostedt]

On Thu, 19 Jun 2014 03:25:46 +0800
kbuild test robot <fengguang.wu@xxxxxxxxx> wrote:

> tree:   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git ftrace/core
> head:   72fa1a896d8ef355e81270667803ceb16a3dd13f
> commit: 32def52ce8faec72c353b6304ca98176687e18f1 [1/3] tracing: Fix syscall_*regfunc() vs copy_process() race
> config: make ARCH=xtensa allyesconfig
> 
> All error/warnings:
> 
>    In file included from include/linux/syscalls.h:80:0,
>                     from fs/ecryptfs/keystore.c:29:
>    include/trace/syscall.h: In function 'syscall_tracepoint_update':
> >> include/trace/syscall.h:39:6: error: 'TIF_SYSCALL_TRACEPOINT' undeclared (first use in this function)
>    include/trace/syscall.h:39:6: note: each undeclared identifier is reported only once for each function it appears in
> 
> vim +/TIF_SYSCALL_TRACEPOINT +39 include/trace/syscall.h
> 
>     33		struct ftrace_event_call *exit_event;
>     34	};
>     35	
>     36	#ifdef CONFIG_TRACEPOINTS
>     37	static inline void syscall_tracepoint_update(struct task_struct *p)
>     38	{
>   > 39		if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
>     40			set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
>     41		else
>     42			clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
> 
> ---
> 0-DAY kernel build testing backend              Open Source Technology Center
> http://lists.01.org/mailman/listinfo/kbuild                 Intel Corporation

My allyesconfig build passed with flying colors. Although we should
probably still add the include of thread_info.h into trace/syscalls.h,
there's no reason that ecryptfs/keystore.c includes linux/syscalls.h.

I suggest adding the patch below.

-- Steve