Commit 74aece72 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Paul E. McKenney
Browse files

rcu: Fix rcu_dynticks_curr_cpu_in_eqs() vs noinstr 



  vmlinux.o: warning: objtool: rcu_nmi_enter()+0x36: call to __kasan_check_read() leaves .noinstr.text section

noinstr cannot have atomic_*() functions in because they're explicitly
annotated, use arch_atomic_*().

Fixes: 2be57f73 ("rcu: Weaken ->dynticks accesses and updates")
Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 7663ad9a

kernel/rcu/tree.c

+1 −1
Original line number Diff line number Diff line
@@ -327,7 +327,7 @@ static void rcu_dynticks_eqs_online(void) 
 */

static __always_inline bool rcu_dynticks_curr_cpu_in_eqs(void)

{

	return !(atomic_read(this_cpu_ptr(&rcu_data.dynticks)) & 0x1);

	return !(arch_atomic_read(this_cpu_ptr(&rcu_data.dynticks)) & 0x1);

}



/*