linux-kernel - Re: [PATCH] ioatdma: make debug output more readable

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Date:	Tue, 05 Mar 2013 15:26:42 -0700
From:	Dave Jiang <dave.jiang@...el.com>
To:	Dan Williams <djbw@...com>
CC:	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ioatdma: make debug output more readable

On 03/05/2013 03:20 PM, Dan Williams wrote:
>
> On 3/4/13 9:59 AM, "Dave Jiang" <dave.jiang@...el.com> wrote:
>
>> Making OP field a hex instead of integer to make it more readable. Also
>> add
>> the dump out of the NEXT field.
>>
>> Signed-off-by: Dave Jiang <dave.jiang@...el.com>
>> ---
>> drivers/dma/ioat/dma.h    |    2 +-
>> drivers/dma/ioat/dma_v3.c |    3 ++-
>> 2 files changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
>> index 53a4cbb..95ae7b3 100644
>> --- a/drivers/dma/ioat/dma.h
>> +++ b/drivers/dma/ioat/dma.h
>> @@ -179,7 +179,7 @@ __dump_desc_dbg(struct ioat_chan_common *chan, struct
>> ioat_dma_descriptor *hw,
>> 	struct device *dev = to_dev(chan);
>>
>> 	dev_dbg(dev, "desc[%d]: (%#llx->%#llx) cookie: %d flags: %#x"
>> -		" ctl: %#x (op: %d int_en: %d compl: %d)\n", id,
>> +		" ctl: %#10.8x (op: %#x int_en: %d compl: %d)\n", id,
>> 		(unsigned long long) tx->phys,
>> 		(unsigned long long) hw->next, tx->cookie, tx->flags,
>> 		hw->ctl, hw->ctl_f.op, hw->ctl_f.int_en, hw->ctl_f.compl_write);
>> diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
>> index 53ea4bd..ce6fcee 100644
>> --- a/drivers/dma/ioat/dma_v3.c
>> +++ b/drivers/dma/ioat/dma_v3.c
>> @@ -605,7 +605,7 @@ dump_pq_desc_dbg(struct ioat2_dma_chan *ioat, struct
>> ioat_ring_ent *desc, struct
>> 	int i;
>>
>> 	dev_dbg(dev, "desc[%d]: (%#llx->%#llx) flags: %#x"
>> -		" sz: %#x ctl: %#x (op: %d int: %d compl: %d pq: '%s%s' src_cnt:
>> %d)\n",
>> +		" sz: %#10.8x ctl: %#x (op: %#x int: %d compl: %d pq: '%s%s' src_cnt:
>> %d)\n",
>> 		desc_id(desc), (unsigned long long) desc->txd.phys,
>> 		(unsigned long long) (pq_ex ? pq_ex->next : pq->next),
>> 		desc->txd.flags, pq->size, pq->ctl, pq->ctl_f.op, pq->ctl_f.int_en,
>> @@ -617,6 +617,7 @@ dump_pq_desc_dbg(struct ioat2_dma_chan *ioat, struct
>> ioat_ring_ent *desc, struct
>> 			(unsigned long long) pq_get_src(descs, i), pq->coef[i]);
>> 	dev_dbg(dev, "\tP: %#llx\n", pq->p_addr);
>> 	dev_dbg(dev, "\tQ: %#llx\n", pq->q_addr);
>> +	dev_dbg(dev, "\tNEXT: %#llx\n", pq->next);
> Looks ok, did you want to distinguish when ->next is pointing to an
> extended descriptor?

Probably a good idea. Let me add that
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