77e9184869
Currently, the debugfs command for bd info is implemented by "echo xxxx > cmd", and record the information in dmesg. It's unnecessary and heavy. To improve it, add two debugfs directories "tx_bd_info" and "rx_bd_info", and create a file for each queue under these two directories, and query the bd info of specific queue by "cat tx_bd_info/tx_bd_queue*" or "cat rx_bd_info/rx_bd_queue*", return the result to userspace, rather than record in dmesg. The display style is below: $ cat rx_bd_info/rx_bd_queue0 Queue 0 rx bd info: BD_IDX L234_INFO PKT_LEN SIZE... 0 0x0 60 60... 1 0x0 1512 1512... $ cat tx_bd_info/tx_bd_queue0 Queue 0 tx bd info: BD_IDX ADDRESS VLAN_TAG SIZE... 0 0x0 0 0... 1 0x0 0 0... Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.