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| author | Peter Zijlstra <peterz@infradead.org> | 2021-09-28 10:40:22 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-10-07 19:00:07 +0200 |
| commit | 74aece72f95f399dd29363669dc32a1344c8fab4 (patch) | |
| tree | 73a408b998c085d73f0bff2935bf43a293637561 /kernel/rcu | |
| parent | rcu: Always inline rcu_dynticks_task*_{enter,exit}() (diff) | |
| download | linux-74aece72f95f399dd29363669dc32a1344c8fab4.tar.xz linux-74aece72f95f399dd29363669dc32a1344c8fab4.zip | |
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: 2be57f732889 ("rcu: Weaken ->dynticks accesses and updates")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 6a1e9d3374db..ef8d36f580fc 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -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); } /* |