[PATCH tip/core/rcu 07/15] uaccess: Cleanup PREEMPT_COUNT leftovers
From: paulmck
Date: Mon Sep 28 2020 - 19:31:52 EST
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be
removed. Cleanup the leftovers before doing so.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
include/linux/uaccess.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 94b2854..b79a5a9 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -230,9 +230,9 @@ static inline bool pagefault_disabled(void)
*
* This function should only be used by the fault handlers. Other users should
* stick to pagefault_disabled().
- * Please NEVER use preempt_disable() to disable the fault handler. With
- * !CONFIG_PREEMPT_COUNT, this is like a NOP. So the handler won't be disabled.
- * in_atomic() will report different values based on !CONFIG_PREEMPT_COUNT.
+ *
+ * Please NEVER use preempt_disable() or local_irq_disable() to disable the
+ * fault handler.
*/
#define faulthandler_disabled() (pagefault_disabled() || in_atomic())
--
2.9.5