| Message ID | 20240730121438.58455-5-liulongfang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | debugfs to hisilicon migration driver | expand |
> -----Original Message----- > From: liulongfang <liulongfang@huawei.com> > Sent: Tuesday, July 30, 2024 1:15 PM > To: alex.williamson@redhat.com; jgg@nvidia.com; Shameerali Kolothum > Thodi <shameerali.kolothum.thodi@huawei.com>; Jonathan Cameron > <jonathan.cameron@huawei.com> > Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org; > linuxarm@openeuler.org; liulongfang <liulongfang@huawei.com> > Subject: [PATCH v7 4/4] Documentation: add debugfs description for hisi > migration > > Add a debugfs document description file to help users understand > how to use the hisilicon accelerator live migration driver's > debugfs. > > Update the file paths that need to be maintained in MAINTAINERS > > Signed-off-by: Longfang Liu <liulongfang@huawei.com> > --- > .../ABI/testing/debugfs-hisi-migration | 25 +++++++++++++++++++ > 1 file changed, 25 insertions(+) > create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration > > diff --git a/Documentation/ABI/testing/debugfs-hisi-migration > b/Documentation/ABI/testing/debugfs-hisi-migration > new file mode 100644 > index 000000000000..053f3ebba9b1 > --- /dev/null > +++ b/Documentation/ABI/testing/debugfs-hisi-migration > @@ -0,0 +1,25 @@ > +What: > /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data > +Date: Jul 2024 > +KernelVersion: 6.11 > +Contact: Longfang Liu <liulongfang@huawei.com> > +Description: Read the configuration data and some status data > + required for device live migration. These data include device > + status data, queue configuration data, some task > configuration > + data and device attribute data. The output format of the data > + is defined by the live migration driver. > + > +What: > /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data > +Date: Jul 2024 > +KernelVersion: 6.11 > +Contact: Longfang Liu <liulongfang@huawei.com> > +Description: Read the data from the last completed live migration. > + This data includes the same device status data as in > "dev_data". > + And some device status data after the migration is > completed. Actually what info is different from dev_data here? Only that it is the dev_data after a migration is attempted/completed, right? Thanks, Shameer > + > +What: > /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state > +Date: Jul 2024 > +KernelVersion: 6.11 > +Contact: Longfang Liu <liulongfang@huawei.com> > +Description: Used to obtain the device command sending and receiving > + channel status. Returns failure or success logs based on the > + results. > -- > 2.24.0
On 2024/8/5 17:09, Shameerali Kolothum Thodi wrote: > > >> -----Original Message----- >> From: liulongfang <liulongfang@huawei.com> >> Sent: Tuesday, July 30, 2024 1:15 PM >> To: alex.williamson@redhat.com; jgg@nvidia.com; Shameerali Kolothum >> Thodi <shameerali.kolothum.thodi@huawei.com>; Jonathan Cameron >> <jonathan.cameron@huawei.com> >> Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org; >> linuxarm@openeuler.org; liulongfang <liulongfang@huawei.com> >> Subject: [PATCH v7 4/4] Documentation: add debugfs description for hisi >> migration >> >> Add a debugfs document description file to help users understand >> how to use the hisilicon accelerator live migration driver's >> debugfs. >> >> Update the file paths that need to be maintained in MAINTAINERS >> >> Signed-off-by: Longfang Liu <liulongfang@huawei.com> >> --- >> .../ABI/testing/debugfs-hisi-migration | 25 +++++++++++++++++++ >> 1 file changed, 25 insertions(+) >> create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration >> >> diff --git a/Documentation/ABI/testing/debugfs-hisi-migration >> b/Documentation/ABI/testing/debugfs-hisi-migration >> new file mode 100644 >> index 000000000000..053f3ebba9b1 >> --- /dev/null >> +++ b/Documentation/ABI/testing/debugfs-hisi-migration >> @@ -0,0 +1,25 @@ >> +What: >> /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data >> +Date: Jul 2024 >> +KernelVersion: 6.11 >> +Contact: Longfang Liu <liulongfang@huawei.com> >> +Description: Read the configuration data and some status data >> + required for device live migration. These data include device >> + status data, queue configuration data, some task >> configuration >> + data and device attribute data. The output format of the data >> + is defined by the live migration driver. >> + >> +What: >> /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data >> +Date: Jul 2024 >> +KernelVersion: 6.11 >> +Contact: Longfang Liu <liulongfang@huawei.com> >> +Description: Read the data from the last completed live migration. >> + This data includes the same device status data as in >> "dev_data". >> + And some device status data after the migration is >> completed. > > Actually what info is different from dev_data here? Only that it is the > dev_data after a migration is attempted/completed, right? > Yes, the only difference is: The mig_data is the dev_data that is migrated. Thanks. Longfang. > Thanks, > Shameer > >> + >> +What: >> /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state >> +Date: Jul 2024 >> +KernelVersion: 6.11 >> +Contact: Longfang Liu <liulongfang@huawei.com> >> +Description: Used to obtain the device command sending and receiving >> + channel status. Returns failure or success logs based on the >> + results. >> -- >> 2.24.0 > > . >
diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration new file mode 100644 index 000000000000..053f3ebba9b1 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-hisi-migration @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu <liulongfang@huawei.com> +Description: Read the configuration data and some status data + required for device live migration. These data include device + status data, queue configuration data, some task configuration + data and device attribute data. The output format of the data + is defined by the live migration driver. + +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu <liulongfang@huawei.com> +Description: Read the data from the last completed live migration. + This data includes the same device status data as in "dev_data". + And some device status data after the migration is completed. + +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu <liulongfang@huawei.com> +Description: Used to obtain the device command sending and receiving + channel status. Returns failure or success logs based on the + results.
Add a debugfs document description file to help users understand how to use the hisilicon accelerator live migration driver's debugfs. Update the file paths that need to be maintained in MAINTAINERS Signed-off-by: Longfang Liu <liulongfang@huawei.com> --- .../ABI/testing/debugfs-hisi-migration | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration