Messages in this thread | | | Date | Tue, 21 Dec 2021 15:34:58 -0800 | From | Stephen Hemminger <> | Subject | Re: [RFC PATCH v12 17/17] dlb: add basic sysfs interfaces |
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On Tue, 21 Dec 2021 00:50:47 -0600 Mike Ximing Chen <mike.ximing.chen@intel.com> wrote:
> The dlb sysfs interfaces include files for reading the total and > available device resources, and reading the device ID and version. The > interfaces are used for device level configurations and resource > inquiries. > > Signed-off-by: Mike Ximing Chen <mike.ximing.chen@intel.com> > --- > Documentation/ABI/testing/sysfs-driver-dlb | 116 ++++++++++++ > drivers/misc/dlb/dlb_args.h | 34 ++++ > drivers/misc/dlb/dlb_main.c | 5 + > drivers/misc/dlb/dlb_main.h | 3 + > drivers/misc/dlb/dlb_pf_ops.c | 195 +++++++++++++++++++++ > drivers/misc/dlb/dlb_resource.c | 50 ++++++ > 6 files changed, 403 insertions(+) > create mode 100644 Documentation/ABI/testing/sysfs-driver-dlb > > diff --git a/Documentation/ABI/testing/sysfs-driver-dlb b/Documentation/ABI/testing/sysfs-driver-dlb > new file mode 100644 > index 000000000000..bf09ef6f8a3a > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-driver-dlb > @@ -0,0 +1,116 @@ > +What: /sys/bus/pci/devices/.../total_resources/num_atomic_inflights > +What: /sys/bus/pci/devices/.../total_resources/num_dir_credits > +What: /sys/bus/pci/devices/.../total_resources/num_dir_ports > +What: /sys/bus/pci/devices/.../total_resources/num_hist_list_entries > +What: /sys/bus/pci/devices/.../total_resources/num_ldb_credits > +What: /sys/bus/pci/devices/.../total_resources/num_ldb_ports > +What: /sys/bus/pci/devices/.../total_resources/num_cos0_ldb_ports > +What: /sys/bus/pci/devices/.../total_resources/num_cos1_ldb_ports > +What: /sys/bus/pci/devices/.../total_resources/num_cos2_ldb_ports > +What: /sys/bus/pci/devices/.../total_resources/num_cos3_ldb_ports > +What: /sys/bus/pci/devices/.../total_resources/num_ldb_queues > +What: /sys/bus/pci/devices/.../total_resources/num_sched_domains > +Date: Oct 15, 2021 > +KernelVersion: 5.15 > +Contact: mike.ximing.chen@intel.com > +Description: > + The total_resources subdirectory contains read-only files that > + indicate the total number of resources in the device. > + > + num_atomic_inflights: Total number of atomic inflights in the > + device. Atomic inflights refers to the > + on-device storage used by the atomic > + scheduler. > + > + num_dir_credits: Total number of directed credits in the > + device. > + > + num_dir_ports: Total number of directed ports (and > + queues) in the device. > + > + num_hist_list_entries: Total number of history list entries in > + the device. > + > + num_ldb_credits: Total number of load-balanced credits in > + the device. > + > + num_ldb_ports: Total number of load-balanced ports in > + the device. > + > + num_cos<M>_ldb_ports: Total number of load-balanced ports > + belonging to class-of-service M in the > + device. > + > + num_ldb_queues: Total number of load-balanced queues in > + the device. > + > + num_sched_domains: Total number of scheduling domains in the > + device. > +
Sysfs is only slightly better than /proc as an API. If it is just for testing than debugfs might be better.
Could this be done with a real netlink interface? Maybe as part of devlink?
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