lwn.git/drivers/infiniband/hw/hfi1/debugfs.c, branch docs-next

hfi1: get rid of redundant debugfs_file_{get,put}()

2025-07-09T11:30:28+00:00

All files in question are created via debugfs_create_file(), so exclusion with removals is provided by debugfs wrappers; as the matter of fact, hfi1-private wrappers had been redundant at least since 2017... Signed-off-by: Al Viro Link: https://lore.kernel.org/r/20250702211508.GB3406663@ZenIV Signed-off-by: Greg Kroah-Hartman

IB: Use capital "OR" for multiple licenses in SPDX

2023-09-11T11:14:00+00:00

Documentation/process/license-rules.rst and checkpatch expect the SPDX identifier syntax for multiple licenses to use capital "OR". Correct it to keep consistent format and avoid copy-paste issues. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20230823092912.122674-1-krzysztof.kozlowski@linaro.org Signed-off-by: Leon Romanovsky

RDMA/hfi1: Delete useless module.h include

2022-01-28T17:03:12+00:00

There is no need in include of module.h in the following files. Link: https://lore.kernel.org/r/c53a257079bc93dac036155b793073939d17ddba.1642960861.git.leonro@nvidia.com Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/hfi1: Convert to SPDX identifier

2021-08-25T17:56:48+00:00

use SPDX-License-Identifier instead of a verbose license text Link: https://lore.kernel.org/r/20210823042622.109-1-caihuoqing@baidu.com Signed-off-by: Cai Huoqing Signed-off-by: Jason Gunthorpe

RDMA/hfi1: Stop using seq_get_buf in _driver_stats_seq_show

2021-08-19T14:39:44+00:00

Just use seq_write to copy the stats into the seq_file buffer instead of poking holes into the seq_file abstraction. Link: https://lore.kernel.org/r/20210810151711.1795374-1-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Mike Marciniszyn Tested-by: Mike Marciniszyn Signed-off-by: Jason Gunthorpe

IB/hfi1: Fix module use count flaw due to leftover module put calls

2020-06-24T18:54:08+00:00

When the try_module_get calls were removed from opening and closing of the i2c debugfs file, the corresponding module_put calls were missed. This results in an inaccurate module use count that requires a power cycle to fix. Fixes: 09fbca8e6240 ("IB/hfi1: No need to use try_module_get for debugfs") Link: https://lore.kernel.org/r/20200623203230.106975.76240.stgit@awfm-01.aw.intel.com Cc: Reviewed-by: Kaike Wan Reviewed-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

IB/hfi1: List all receive contexts from debugfs

2020-01-03T20:44:50+00:00

The current debugfs output for receive contexts (rcds), stops after the kernel receive contexts have been displayed. This is not enough information to fully diagnose packet drops. Display all of the receive contexts. Augment the output with some more context information. Limit the ring buffer header output to 5 entries to avoid overextending the sequential file output. Fixes: bf808b5039c ("IB/hfi1: Add kernel receive context info to debugfs") Link: https://lore.kernel.org/r/20191219211928.58387.20737.stgit@awfm-01.aw.intel.com Reviewed-by: Mike Marciniszyn Signed-off-by: Michael J. Ruhl Signed-off-by: Kaike Wan Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

IB/hfi1: No need to use try_module_get for debugfs

2019-06-29T01:34:26+00:00

The call in debugfs.c for try_module_get() is not needed. A reference to the module will be taken by the VFS layer as long as the owner field is set in the file ops struct. So set this as well as remove the call. Suggested-by: Jason Gunthorpe Reviewed-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

IB/hfi1: Add debugfs to control expansion ROM write protect

2019-04-24T14:26:41+00:00

Some kernels now enable CONFIG_IO_STRICT_DEVMEM which prevents multiple handles to PCI resource0. In order to continue to support expansion ROM updates while the driver is loaded, the driver must now provide an interface to control the expansion ROM write protection. This patch adds an exprom_wp debugfs interface that allows the hfi1_eprom user tool to disable the expansion ROM write protection by opening the file and writing a '1'. The write protection is released when writing a '0' or automatically re-enabled when the file handle is closed. The current implementation will only allow one handle to be opened at a time across all hfi1 devices. Reviewed-by: Dennis Dalessandro Signed-off-by: Josh Collier Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

hfi1: Convert hfi1_unit_table to XArray

2019-04-01T16:27:35+00:00

Also remove hfi1_devs_list. Signed-off-by: Matthew Wilcox Reviewed-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe