From: Yuanhan Liu <yliu@fridaylinux.org>
To: Olivier Matz <olivier.matz@6wind.com>
Cc: dev@dpdk.org, Maxime Coquelin <maxime.coquelin@redhat.com>,
Tiwei Bie <tiwei.bie@intel.com>
Subject: Re: [dpdk-dev] [PATCH v3 0/4] net/virtio: fix memory leak when reinitializing device
Date: Fri, 26 Jan 2018 23:34:15 +0800 [thread overview]
Message-ID: <20180126153415.GF29540@yliu-mob> (raw)
In-Reply-To: <20180123155443.8883-1-olivier.matz@6wind.com>
On Tue, Jan 23, 2018 at 04:54:39PM +0100, Olivier Matz wrote:
> When devops->configure() is called, the queues may be reallocated
> if the features flag changed, but the previous are not freed. This
> patchset fixes this issue.
Seires applied to dpdk-next-virtio.
Thanks.
--yliu
>
> To really point out the issue, I instrumented rte_malloc,
> rte_memzone_reserve, rte_mbuf_alloc to track the allocations and frees.
> For reference, the patch is available here:
> https://www.droids-corp.org/~zer0/hidden/0001-debug-malloc.patch
> Iit conflicts a bit with the patchset, but it is quite easy to solve.
>
> To reproduce the issue:
>
> cd dpdk
> make config T=x86_64-native-linuxapp-gcc
> sed -i 's,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_INIT=n,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_INIT=y,' build/.config
> make -j4
> mkdir -p /mnt/huge
> mount -t hugetlbfs nodev /mnt/huge
> echo 256 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
> modprobe uio_pci_generic
> python usertools/dpdk-devbind.py -b uio_pci_generic 0000:00:02.0
> ./build/app/testpmd -l 0,1 --log-level 8 -- --total-num-mbufs=16384 \
> -i --port-topology=chained --disable-hw-vlan-filter \
> --disable-hw-vlan-strip --enable-rx-cksum --enable-lro \
> --txqflags=0 --no-lsc-interrupt
>
> # testpmd commands
> port stop 0
> port config all rx-cksum off
> port start 0
> quit
>
> Without the patchset, the debug patch displays a leak of mbufs allocated
> from virtio_dev_rx_queue_setup_finish() and a leak of rte_mallocs allocated
> from virtio_init_queue().
>
> After the patchset, only one malloc is remaining after the device close,
> but this is normal, because this area is freed in dev_uninit().
>
> v2 -> v3:
> - fix queue flushing with vector Rx enabled (Tiwei).
> The patch is slightly changed compared to what was proposed by mail,
> due to a checkpatch warning.
>
> v1 -> v2:
> - move the vq != NULL check from the refactor patch to the memory
> leak fix patch (Yuanhan)
> - new patch to fix queue flushing with vector Rx enabled (Tiwei)
> - move the backportable fixes at the beginning of the patchset (Yuanhan)
> - remove Cc stable on the typo fix (Yuanhan)
> note: I finally kept it in the patchset
>
>
> Olivier Matz (4):
> net/virtio: fix queue flushing with vector Rx enabled
> net/virtio: fix memory leak when reinitializing device
> net/virtio: rationalize queue flushing
> net/virtio: fix typo in function name
>
> drivers/net/virtio/virtio_ethdev.c | 71 +++++++++++++++++---------------------
> drivers/net/virtio/virtqueue.c | 30 +++++++++++++---
> drivers/net/virtio/virtqueue.h | 13 ++++++-
> 3 files changed, 69 insertions(+), 45 deletions(-)
>
> --
> 2.11.0
prev parent reply other threads:[~2018-01-26 15:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-18 9:07 [dpdk-dev] [PATCH 0/3] " Olivier Matz
2018-01-18 9:07 ` [dpdk-dev] [PATCH 1/3] net/virtio: fix typo in function name Olivier Matz
2018-01-18 13:27 ` Yuanhan Liu
2018-01-18 13:45 ` Olivier Matz
2018-01-18 14:06 ` Yuanhan Liu
2018-01-18 9:07 ` [dpdk-dev] [PATCH 2/3] net/virtio: rationalize queue flushing Olivier Matz
2018-01-18 13:26 ` Yuanhan Liu
2018-01-18 13:55 ` Olivier Matz
2018-01-18 14:04 ` Yuanhan Liu
2018-01-18 14:05 ` Tiwei Bie
2018-01-18 14:55 ` Olivier Matz
2018-01-18 15:48 ` Tiwei Bie
2018-01-18 15:56 ` Olivier Matz
2018-01-18 9:07 ` [dpdk-dev] [PATCH 3/3] net/virtio: fix memory leak when reinitializing device Olivier Matz
2018-01-19 15:55 ` [dpdk-dev] [PATCH v2 0/4] " Olivier Matz
2018-01-19 15:55 ` [dpdk-dev] [PATCH v2 1/4] net/virtio: fix queue flushing with vector Rx enabled Olivier Matz
2018-01-22 2:56 ` Tiwei Bie
2018-01-22 10:38 ` Olivier Matz
2018-01-23 2:05 ` Tiwei Bie
2018-01-19 15:55 ` [dpdk-dev] [PATCH v2 2/4] net/virtio: fix memory leak when reinitializing device Olivier Matz
2018-01-19 15:55 ` [dpdk-dev] [PATCH v2 3/4] net/virtio: rationalize queue flushing Olivier Matz
2018-01-19 15:55 ` [dpdk-dev] [PATCH v2 4/4] net/virtio: fix typo in function name Olivier Matz
2018-01-23 15:54 ` [dpdk-dev] [PATCH v3 0/4] net/virtio: fix memory leak when reinitializing device Olivier Matz
2018-01-23 15:54 ` [dpdk-dev] [PATCH v3 1/4] net/virtio: fix queue flushing with vector Rx enabled Olivier Matz
2018-01-23 15:54 ` [dpdk-dev] [PATCH v3 2/4] net/virtio: fix memory leak when reinitializing device Olivier Matz
2018-01-23 15:54 ` [dpdk-dev] [PATCH v3 3/4] net/virtio: rationalize queue flushing Olivier Matz
2018-01-23 15:54 ` [dpdk-dev] [PATCH v3 4/4] net/virtio: fix typo in function name Olivier Matz
2018-01-26 15:34 ` Yuanhan Liu [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180126153415.GF29540@yliu-mob \
--to=yliu@fridaylinux.org \
--cc=dev@dpdk.org \
--cc=maxime.coquelin@redhat.com \
--cc=olivier.matz@6wind.com \
--cc=tiwei.bie@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).