Re: [PATCH sched-devel] ftrace: trace_entries to change tracebuffer size

From: Andrew Morton
Date: Fri Apr 18 2008 - 15:16:06 EST


On Fri, 18 Apr 2008 08:48:09 -0400 (EDT) Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> > > + data->lock = (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
> > > + max_tr.data[i]->lock = (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
> >
> > eww. This *really* needs explanatory comments.
> >
>
> Actually, that's just a way of doing spin_lock_init for raw spin locks. I
> didn't see any other way.

Maybe we need raw_spin_lock_init(). And DEFINE_RAW_SPINLOCK()?

Although it isn't a great idea to be encouraging the use of raw
spinlocks.
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