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SubjectRe: [PATCH v8 04/20] dlb: add device ioctl layer and first three ioctls
On Mon, Jan 04, 2021 at 08:58:23PM -0600, Mike Ximing Chen wrote:
> Introduce the dlb device ioctl layer and the first three ioctls: query
> device version, query available resources, and create a scheduling domain.
> Also introduce the user-space interface file dlb_user.h.
>
> The device version query is designed to allow each DLB device version/type
> to have its own unique ioctl API through the /dev/dlb%d node. Each such API
> would share in common the device version command as its first command, and
> all subsequent commands can be unique to the particular device.
>
> The hardware operation for scheduling domain creation will be added in a
> subsequent commit.
>
> Signed-off-by: Gage Eads <gage.eads@intel.com>
> Signed-off-by: Mike Ximing Chen <mike.ximing.chen@intel.com>
> Reviewed-by: Magnus Karlsson <magnus.karlsson@intel.com>
> Reviewed-by: Dan Williams <dan.j.williams@intel.com>
> ---
> .../userspace-api/ioctl/ioctl-number.rst | 1 +
> drivers/misc/dlb/Makefile | 2 +-
> drivers/misc/dlb/dlb_bitmap.h | 32 ++++
> drivers/misc/dlb/dlb_ioctl.c | 119 +++++++++++++
> drivers/misc/dlb/dlb_ioctl.h | 11 ++
> drivers/misc/dlb/dlb_main.c | 3 +
> drivers/misc/dlb/dlb_main.h | 7 +
> drivers/misc/dlb/dlb_pf_ops.c | 21 +++
> drivers/misc/dlb/dlb_resource.c | 63 +++++++
> drivers/misc/dlb/dlb_resource.h | 5 +
> include/uapi/linux/dlb.h | 166 ++++++++++++++++++
> 11 files changed, 429 insertions(+), 1 deletion(-)
> create mode 100644 drivers/misc/dlb/dlb_ioctl.c
> create mode 100644 drivers/misc/dlb/dlb_ioctl.h
> create mode 100644 include/uapi/linux/dlb.h
>
> diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
> index 55a2d9b2ce33..afca043d59f8 100644
> --- a/Documentation/userspace-api/ioctl/ioctl-number.rst
> +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
> @@ -241,6 +241,7 @@ Code Seq# Include File Comments
> 'h' 00-7F conflict! Charon filesystem
> <mailto:zapman@interlan.net>
> 'h' 00-1F linux/hpet.h conflict!
> +'h' 00-1F uapi/linux/dlb.h conflict!

Why are you taking a range that you know there is a conflict for?

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