On Mon, 25 Sep 2006 00:05:09 +0530
Dipankar Sarma <[email protected]> wrote:
> Add a debug check for rcu read-side critical section code calling
> a function that might sleep which is illegal. The check is enabled only
> if CONFIG_DEBUG_SPINLOCK_SLEEP is set.
>
Does this actually change anything? rcu_read_lock is preempt_disable(), and
might_sleep() already triggers if called inside preempt_disable().
> -#define rcu_read_lock() __rcu_read_lock()
> +#define rcu_read_lock() \
> + do { \
> + rcu_add_read_count(); \
> + __rcu_read_lock(); \
I don't have any __rcu_read_lock(). I guess this is against your
to-be-resent RCU patches?
> +DEFINE_PER_CPU(int, rcu_read_count);
Can have static scope.
-
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