On Sun, Nov 24, 2024 at 06:49:44PM -0500, Steven Rostedt wrote: > From: Mathieu Desnoyers <[email protected]> > > Define a rcu_tasks_trace lock guard for use by the syscall enter/exit > tracepoints. > > Cc: Linus Torvalds <[email protected]> > Cc: Thomas Gleixner <[email protected]> > Cc: Michael Jeanson <[email protected]> > Cc: Masami Hiramatsu <[email protected]> > Cc: Peter Zijlstra <[email protected]> > Cc: Alexei Starovoitov <[email protected]> > Cc: Yonghong Song <[email protected]> > Cc: Paul E. McKenney <[email protected]> > Cc: Ingo Molnar <[email protected]> > Cc: Arnaldo Carvalho de Melo <[email protected]> > Cc: Mark Rutland <[email protected]> > Cc: Alexander Shishkin <[email protected]> > Cc: Namhyung Kim <[email protected]> > Cc: Andrii Nakryiko <[email protected]> > Cc: [email protected] > Cc: Joel Fernandes <[email protected]> > Cc: Jordan Rife <[email protected]> > Cc: [email protected] > Link: > https://lore.kernel.org/[email protected] > Signed-off-by: Mathieu Desnoyers <[email protected]> > Signed-off-by: Steven Rostedt (Google) <[email protected]>
Reviewed-by: Paul E. McKenney <[email protected]> > --- > include/linux/rcupdate_trace.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h > index eda493200663..e6c44eb428ab 100644 > --- a/include/linux/rcupdate_trace.h > +++ b/include/linux/rcupdate_trace.h > @@ -10,6 +10,7 @@ > > #include <linux/sched.h> > #include <linux/rcupdate.h> > +#include <linux/cleanup.h> > > extern struct lockdep_map rcu_trace_lock_map; > > @@ -98,4 +99,8 @@ static inline void rcu_read_lock_trace(void) { BUG(); } > static inline void rcu_read_unlock_trace(void) { BUG(); } > #endif /* #ifdef CONFIG_TASKS_TRACE_RCU */ > > +DEFINE_LOCK_GUARD_0(rcu_tasks_trace, > + rcu_read_lock_trace(), > + rcu_read_unlock_trace()) > + > #endif /* __LINUX_RCUPDATE_TRACE_H */ > -- > 2.45.2 > >
