From: "Zhang, Tianfei" <tianfei.zhang@intel.com>
To: "Yigit, Ferruh" <ferruh.yigit@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>, "Xu, Rosen" <rosen.xu@intel.com>,
"Huang, Wei" <wei.huang@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2 3/4] raw/ifpga/base: cleanup ifpga raw devices when process quit
Date: Fri, 16 Oct 2020 05:54:20 +0000 [thread overview]
Message-ID: <BYAPR11MB34776956D0DEAEE128225B0BE3030@BYAPR11MB3477.namprd11.prod.outlook.com> (raw)
In-Reply-To: <e765dc59-b7c5-c8ba-a2ef-f1e4b298a3a8@intel.com>
> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit@intel.com>
> Sent: 2020年10月16日 2:57
> To: Zhang, Tianfei <tianfei.zhang@intel.com>; dev@dpdk.org; Xu, Rosen
> <rosen.xu@intel.com>; Huang, Wei <wei.huang@intel.com>
> Subject: Re: [dpdk-dev] [PATCH v2 3/4] raw/ifpga/base: cleanup ifpga raw
> devices when process quit
>
> On 9/28/2020 2:40 AM, Tianfei zhang wrote:
> > From: Wei Huang <wei.huang@intel.com>
> >
> > Add function ifpga_rawdev_cleanup() to cleanup all ifpga raw devices
> > and register it as RTE_FINI function to make it called after main().
> >
> > Signed-off-by: Wei Huang <wei.huang@intel.com>
> > Signed-off-by: Tianfei zhang <tianfei.zhang@intel.com>
> > ---
> > drivers/raw/ifpga/ifpga_rawdev.c | 20 ++++++++++++++++++++
> > 1 file changed, 20 insertions(+)
> >
> > diff --git a/drivers/raw/ifpga/ifpga_rawdev.c
> > b/drivers/raw/ifpga/ifpga_rawdev.c
> > index 98b02b5fa..1bc500a2a 100644
> > --- a/drivers/raw/ifpga/ifpga_rawdev.c
> > +++ b/drivers/raw/ifpga/ifpga_rawdev.c
> > @@ -1609,6 +1609,26 @@
> RTE_PMD_REGISTER_PCI_TABLE(ifpga_rawdev_pci_driver,
> rte_ifpga_rawdev_pmd);
> > RTE_PMD_REGISTER_KMOD_DEP(ifpga_rawdev_pci_driver, "* igb_uio |
> uio_pci_generic | vfio-pci");
> > RTE_LOG_REGISTER(ifpga_rawdev_logtype, driver.raw.init, NOTICE);
> >
> > +RTE_FINI(ifpga_rawdev_cleanup)
> > +{
> > + struct ifpga_rawdev *dev;
> > + struct opae_adapter *adapter;
> > + unsigned int i;
> > +
> > + for (i = 0; i < IFPGA_RAWDEV_NUM; i++) {
> > + dev = &ifpga_rawdevices[i];
> > + if (dev->rawdev) {
> > + adapter = ifpga_rawdev_get_priv(dev->rawdev);
> > + if (adapter) {
> > + opae_adapter_destroy(adapter);
> > + opae_adapter_data_free(adapter->data);
> > + }
> > + rte_rawdev_pmd_release(dev->rawdev);
> > + dev->rawdev = NULL;
> > + }
> > + }
> > +}
> > +
> > static const char * const valid_args[] = {
> > #define IFPGA_ARG_NAME "ifpga"
> > IFPGA_ARG_NAME,
> >
>
> Not sure about each driver adding destructors for cleanup, instead better to
> have a proper cleanup path for application exit.
>
> What is the motivation of the patch, does not cleaning has negative impact,
> something like not able to start app again if it is not cleaned properly etc...
>
> If there is negative impact but to be able to clean driver properly, I would
> suggest doing this by improving exit path.
Good suggestion, in V3, we will add cleanup in rte_rawdev_ops-> dev_close ops,
For example, in ifpga driver, we will add it in ifpga_rawdev_close().
We will fix in V3.
next prev parent reply other threads:[~2020-10-16 5:54 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 7:30 [dpdk-dev] [PATCH v4 0/4] raw/ifpga/base: An inprovement for multi-process Tianfei zhang
2020-09-23 7:30 ` [dpdk-dev] [PATCH v4 1/4] raw/ifpga/base: fix bug in IRQ functions Tianfei zhang
2020-09-23 7:30 ` [dpdk-dev] [PATCH v4 2/4] raw/ifpga/base: free resources when destroying ifpga device Tianfei zhang
2020-09-23 7:30 ` [dpdk-dev] [PATCH v4 3/4] raw/ifpga/base: cleanup ifpga raw devices when process quit Tianfei zhang
2020-09-23 7:30 ` [dpdk-dev] [PATCH v4 4/4] raw/ifpga/base: enhance driver reliablity in multi-process Tianfei zhang
2020-09-28 1:40 ` [dpdk-dev] [PATCH v2 0/4] raw/ifpga/base: An improvement for multi-process Tianfei zhang
2020-09-28 1:40 ` [dpdk-dev] [PATCH v2 1/4] raw/ifpga/base: fix bug in IRQ functions Tianfei zhang
2020-09-29 1:42 ` Xu, Rosen
2020-10-14 9:59 ` Zhang, Tianfei
2020-10-15 13:14 ` Zhang, Qi Z
2020-10-15 18:56 ` Ferruh Yigit
2020-10-16 5:46 ` Zhang, Tianfei
2020-09-28 1:40 ` [dpdk-dev] [PATCH v2 2/4] raw/ifpga/base: free resources when destroying ifpga device Tianfei zhang
2020-09-29 1:42 ` Xu, Rosen
2020-10-15 13:15 ` Zhang, Qi Z
2020-10-15 18:57 ` Ferruh Yigit
2020-10-16 5:51 ` Zhang, Tianfei
2020-09-28 1:40 ` [dpdk-dev] [PATCH v2 3/4] raw/ifpga/base: cleanup ifpga raw devices when process quit Tianfei zhang
2020-09-29 1:43 ` Xu, Rosen
2020-10-15 13:15 ` Zhang, Qi Z
2020-10-15 18:57 ` Ferruh Yigit
2020-10-16 5:54 ` Zhang, Tianfei [this message]
2020-09-28 1:40 ` [dpdk-dev] [PATCH v2 4/4] raw/ifpga/base: enhance driver reliability in multi-process Tianfei zhang
2020-10-15 6:08 ` Xu, Rosen
2020-10-15 13:16 ` Zhang, Qi Z
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 0/5] raw/ifpga/base: An improvement for multi-process Tianfei zhang
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 1/5] raw/ifpga/base: fix interrupt handler instance usage Tianfei zhang
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 2/5] raw/ifpga/base: handle unsupported interrupt type Tianfei zhang
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 3/5] raw/ifpga/base: fix return of IRQ unregister properly Tianfei zhang
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 4/5] raw/ifpga/base: free resources when destroying ifpga device Tianfei zhang
2020-10-23 8:59 ` [dpdk-dev] [PATCH v3 5/5] raw/ifpga/base: enhance driver reliablity in multi-process Tianfei zhang
2020-10-26 1:04 ` [dpdk-dev] [PATCH v3 0/5] raw/ifpga/base: An improvement for multi-process Zhang, Qi Z
2020-10-23 9:06 ` Tianfei zhang
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