Re: [PATCH v6 1/4] tracing: Deference pointers without RCU checks

2016-09-07 Thread Masami Hiramatsu
2016-09-07 20:13 GMT+09:00 Binoy Jayan : > > From: Daniel Wagner > > The tracepoint can't be used in code section where we are in the > middle of a state transition. > > For example if we place a tracepoint inside start/stop_critical_section(), > lockdep complains with > > [0.035589] WARNING:

[PATCH v6 1/4] tracing: Deference pointers without RCU checks

2016-09-07 Thread Binoy Jayan
From: Daniel Wagner The tracepoint can't be used in code section where we are in the middle of a state transition. For example if we place a tracepoint inside start/stop_critical_section(), lockdep complains with [0.035589] WARNING: CPU: 0 PID: 3 at kernel/locking/lockdep.c:3560 \ check_fla