Messages in this thread Patch in this message | | | From | paulmck@kernel ... | Subject | [PATCH tip/core/rcu 07/15] uaccess: Cleanup PREEMPT_COUNT leftovers | Date | Mon, 28 Sep 2020 16:30:54 -0700 |
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From: Thomas Gleixner <tglx@linutronix.de>
CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be removed. Cleanup the leftovers before doing so.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> --- 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
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