On Mon, Apr 07, 2008 at 03:10:09PM +0200, Johannes Berg wrote:
> > Note that I've been wondering wether we should attempt to trace all
> > those IRQ state change internally to the exception code. I've looked at
> > not doing it, which simplifies things a bit.
> >
> > Unfortunately, that will make
On Mon, Apr 07, 2008 at 02:49:51PM +1000, Benjamin Herrenschmidt wrote:
> I think I found one:
>
> .../...
>
> > - mr r6,r3
> > rlwinm r12,r1,0,0,(31-THREAD_SHIFT)/* current_thread_info() */
> > /* disable interrupts so current_thread_info()->flags can't change */
> > LOA
> Note that I've been wondering wether we should attempt to trace all
> those IRQ state change internally to the exception code. I've looked at
> not doing it, which simplifies things a bit.
>
> Unfortunately, that will make us occasionally trace redundant
> enable/disable (which isn't a big prob
I think I found one:
.../...
> - mr r6,r3
> rlwinm r12,r1,0,0,(31-THREAD_SHIFT)/* current_thread_info() */
> /* disable interrupts so current_thread_info()->flags can't change */
> LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
> SYNC
> M
On Sat, Apr 05, 2008 at 04:14:56PM +1100, Benjamin Herrenschmidt wrote:
>
> On Sat, 2008-04-05 at 01:31 +0200, Johannes Berg wrote:
> > > This version takes care to save and restore *all* the volatile registers
> > > around the call to trace_hardirqs_off in transfer_to_handler, and should
> > > fi
On Sat, 2008-04-05 at 01:31 +0200, Johannes Berg wrote:
> > This version takes care to save and restore *all* the volatile registers
> > around the call to trace_hardirqs_off in transfer_to_handler, and should
> > fix the anomalies seen by Johannes Berg. I've tested on 7447- and 8548-
> > based b
> This version takes care to save and restore *all* the volatile registers
> around the call to trace_hardirqs_off in transfer_to_handler, and should
> fix the anomalies seen by Johannes Berg. I've tested on 7447- and 8548-
> based boards.
Still has problems on my machine. Maybe to do with non-m
> Right, it's not needed on 4xx/BookE, but I didn't think it worth
> optimizing at this point, since it will split the code into 4xx/BookE
> and classic versions. Let's get it working solid first.
Yup, it's just that I spotted it while reading the code.
> That's what I originally thought and had
On Sat, Apr 05, 2008 at 09:07:31AM +1100, Benjamin Herrenschmidt wrote:
> > diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
> > index 69a91bd..bd3ce0f 100644
> > --- a/arch/powerpc/kernel/entry_32.S
> > +++ b/arch/powerpc/kernel/entry_32.S
> > @@ -144,6 +144,47 @@ trans
> config LOCKDEP_SUPPORT
> diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
> index 69a91bd..bd3ce0f 100644
> --- a/arch/powerpc/kernel/entry_32.S
> +++ b/arch/powerpc/kernel/entry_32.S
> @@ -144,6 +144,47 @@ transfer_to_handler:
> .globl transfer_to_handler_cont
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