* Yuanhan Liu <yuanhan....@linux.intel.com> wrote:
> Use spin_[un]lock instead of arch_spin_[un]lock in mutex-debug.h so
> that we can collect the lock statistics of spin_lock_mutex from
> /proc/lock_stat.
>
> Cc: Ingo Molnar <mi...@kernel.org>
> Signed-off-by: Yuanhan Liu <yuanhan....@linux.intel.com>
> ---
> kernel/mutex-debug.h | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/mutex-debug.h b/kernel/mutex-debug.h
> index 0799fd3..556c0bc 100644
> --- a/kernel/mutex-debug.h
> +++ b/kernel/mutex-debug.h
> @@ -43,13 +43,13 @@ static inline void mutex_clear_owner(struct mutex *lock)
> \
> DEBUG_LOCKS_WARN_ON(in_interrupt()); \
> local_irq_save(flags); \
> - arch_spin_lock(&(lock)->rlock.raw_lock);\
> + spin_lock(lock); \
But in that case it could probably use the spin_lock_irqsave()
primitive, right?
> DEBUG_LOCKS_WARN_ON(l->magic != l); \
> } while (0)
>
> #define spin_unlock_mutex(lock, flags) \
> do { \
> - arch_spin_unlock(&(lock)->rlock.raw_lock); \
> + spin_unlock(lock); \
> local_irq_restore(flags); \
> preempt_check_resched(); \
And here spin_unlock_irqrestore().
Thanks,
Ingo
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