linux-kernel - Re: [PATCH] tracing: fix compiler warnings in trace

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Message-ID: <20151102132245.430223ef@gandalf.local.home>
Date:	Mon, 2 Nov 2015 13:22:45 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Geliang Tang <geliangtang@....com>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: fix compiler warnings in trace_events.c

On Mon,  2 Nov 2015 00:00:43 -0800
Geliang Tang <geliangtang@....com> wrote:

> Fix the following warnings:
>   kernel/trace/trace_events.c: In function '__ftrace_clear_event_pids':
>   kernel/trace/trace_events.c:579: warning: passing argument 1 of 'unregister_trace_sched_switch' from incompatible pointer type
>   include/trace/events/sched.h:162: note: expected 'void (*)(void *, bool,  struct task_struct *, struct task_struct *)' but argument is of type 'void (*)(void *, struct task_struct *, struct task_struct *)'
>   kernel/trace/trace_events.c:580: warning: passing argument 1 of 'unregister_trace_sched_switch' from incompatible pointer type
>   include/trace/events/sched.h:162: note: expected 'void (*)(void *, bool,  struct task_struct *, struct task_struct *)' but argument is of type 'void (*)(void *, struct task_struct *, struct task_struct *)'
>   kernel/trace/trace_events.c: In function 'ftrace_event_pid_write':
>   kernel/trace/trace_events.c:1724: warning: passing argument 1 of 'register_trace_prio_sched_switch' from incompatible pointer type
>   include/trace/events/sched.h:162: note: expected 'void (*)(void *, bool,  struct task_struct *, struct task_struct *)' but argument is of type 'void (*)(void *, struct task_struct *, struct task_struct *)'
>   kernel/trace/trace_events.c:1726: warning: passing argument 1 of 'register_trace_prio_sched_switch' from incompatible pointer type
>   include/trace/events/sched.h:162: note: expected 'void (*)(void *, bool,  struct task_struct *, struct task_struct *)' but argument is of type 'void (*)(void *, struct task_struct *, struct task_struct *)'
> 
> Signed-off-by: Geliang Tang <geliangtang@....com>

This is something that Linus is going to have to fix when he merges
both trees. This patch wont work with either of them without the other
already merged.

-- Steve
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