From: Klaus Jensen <its@irrelevant.dk>
To: Minwoo Im <minwoo.im.dev@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
qemu-block@nongnu.org, Klaus Jensen <k.jensen@samsung.com>,
qemu-devel@nongnu.org, Max Reitz <mreitz@redhat.com>,
Keith Busch <kbusch@kernel.org>,
Maxim Levitsky <mlevitsk@redhat.com>
Subject: Re: [PATCH 06/16] hw/block/nvme: pass request along for tracing
Date: Wed, 29 Jul 2020 21:49:54 +0200 [thread overview]
Message-ID: <20200729194954.GC293496@apples.localdomain> (raw)
In-Reply-To: <20200729154936.GE14876@localhost.localdomain>
On Jul 30 00:49, Minwoo Im wrote:
> Klaus,
>
> On 20-07-20 13:37:38, Klaus Jensen wrote:
> > From: Klaus Jensen <k.jensen@samsung.com>
> >
> > Pass along the NvmeRequest in various functions since it is very useful
> > for tracing.
>
> One doubt here.
> This patch has put NvmeRequest argument to the nvme_map_prp() to trace
> the request's command id. But can we just trace the cid before this
> kind of prp mapping, somewhere like nvme_process_sq() level. Then we
> can figure out the tracing for the prp mapping is from which request.
>
> Tracing for cid is definitely great, but feels like too much cost to
> pass argument to trace 'cid' in the middle of the dma mapping stage.
>
Good point Minwoo.
I ended up dropping the patch and just replacing it with a patch that
adds tracing to nvme_map_prp.
next prev parent reply other threads:[~2020-07-29 19:51 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 11:37 [PATCH 00/16] hw/block/nvme: dma handling and address mapping cleanup Klaus Jensen
2020-07-20 11:37 ` [PATCH 01/16] hw/block/nvme: memset preallocated requests structures Klaus Jensen
2020-07-20 11:37 ` [PATCH 02/16] hw/block/nvme: add mapping helpers Klaus Jensen
2020-07-29 13:57 ` Maxim Levitsky
2020-07-29 18:23 ` Klaus Jensen
2020-07-29 15:19 ` Minwoo Im
2020-07-29 20:40 ` Andrzej Jakowski
2020-07-29 21:24 ` Klaus Jensen
2020-07-29 21:51 ` Andrzej Jakowski
2020-07-29 21:53 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 03/16] hw/block/nvme: replace dma_acct with blk_acct equivalent Klaus Jensen
2020-07-29 15:23 ` Minwoo Im
2020-07-20 11:37 ` [PATCH 04/16] hw/block/nvme: remove redundant has_sg member Klaus Jensen
2020-07-29 15:29 ` Minwoo Im
2020-07-29 18:29 ` Klaus Jensen
[not found] ` <CGME20200729182946epcas2p1bef465a70c1a815654a07814aa379dc3@epcms2p5>
2020-07-30 0:34 ` Minwoo Im
2020-07-20 11:37 ` [PATCH 05/16] hw/block/nvme: refactor dma read/write Klaus Jensen
2020-07-29 15:35 ` Minwoo Im
2020-07-29 17:35 ` Maxim Levitsky
2020-07-29 18:38 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 06/16] hw/block/nvme: pass request along for tracing Klaus Jensen
2020-07-29 15:49 ` Minwoo Im
2020-07-29 19:49 ` Klaus Jensen [this message]
2020-07-20 11:37 ` [PATCH 07/16] hw/block/nvme: add request mapping helper Klaus Jensen
2020-07-29 15:52 ` Minwoo Im
2020-07-29 18:31 ` Maxim Levitsky
2020-07-29 19:22 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 08/16] hw/block/nvme: verify validity of prp lists in the cmb Klaus Jensen
2020-07-29 15:54 ` Minwoo Im
2020-07-20 11:37 ` [PATCH 09/16] hw/block/nvme: refactor request bounds checking Klaus Jensen
2020-07-29 15:56 ` Minwoo Im
2020-07-20 11:37 ` [PATCH 10/16] hw/block/nvme: add check for mdts Klaus Jensen
2020-07-29 16:00 ` Minwoo Im
2020-07-29 19:30 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 11/16] hw/block/nvme: be consistent about zeros vs zeroes Klaus Jensen
2020-07-29 16:01 ` Minwoo Im
2020-07-29 17:39 ` Maxim Levitsky
2020-07-20 11:37 ` [PATCH 12/16] hw/block/nvme: refactor NvmeRequest clearing Klaus Jensen
2020-07-29 16:04 ` Minwoo Im
2020-07-29 17:47 ` Maxim Levitsky
2020-07-29 19:02 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 13/16] hw/block/nvme: add a namespace reference in NvmeRequest Klaus Jensen
2020-07-29 16:06 ` Minwoo Im
2020-07-29 17:53 ` Maxim Levitsky
2020-07-20 11:37 ` [PATCH 14/16] hw/block/nvme: consolidate qsg/iov clearing Klaus Jensen
2020-07-29 16:08 ` Minwoo Im
2020-07-29 18:18 ` Maxim Levitsky
2020-07-29 19:49 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 15/16] hw/block/nvme: remove NvmeCmd parameter Klaus Jensen
2020-07-29 16:10 ` Minwoo Im
2020-07-29 19:44 ` Klaus Jensen
2020-07-29 18:25 ` Maxim Levitsky
2020-07-29 20:00 ` Klaus Jensen
2020-07-20 11:37 ` [PATCH 16/16] hw/block/nvme: use preallocated qsg/iov in nvme_dma_prp Klaus Jensen
2020-07-29 16:15 ` Minwoo Im
2020-07-29 19:57 ` Klaus Jensen
2020-07-27 9:42 ` [PATCH 00/16] hw/block/nvme: dma handling and address mapping cleanup Klaus Jensen
2020-07-27 20:44 ` Keith Busch
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