linux-kernel - [PATCH v3 0/5] Add debugfs info for the AMD IOMMU

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Date:   Wed, 14 Mar 2018 18:04:44 -0500
From:   Gary R Hook <gary.hook@....com>
To:     iommu@...ts.linux-foundation.org
Cc:     joro@...tes.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/5] Add debugfs info for the AMD IOMMU

The following series creates a debugfs directory for AMD IOMMUs,
constructs a framework for additional entries, an online README,
and a method for dumping device table entries. Data is reported
in a default concise mode, but a verbose mode is enabled via a
filesystem entry.

This is the first of three patch series that will expose a number
of IOMMU registers.

Changes since v2:
- Change lock type to a mutex
- Convert a #define to an inline
- Alphabetize #include files
- Remove unnecessary checks for pointers
- Use kstrtoint() instead of sscanf()
- Added comments
- Minor style fixes

Changes since v1:
- Correctly use CONFIG_AMD_IOMMU_DEBUG in Makefile and header file

---

Gary R Hook (5):
      iommu/amd - Add debugfs support
      iommu/amd - Add a 'verbose' switch for IOMMU debugfs
      iommu/amd - Add a README variable for the IOMMU debugfs
      iommu/amd - Expose the active IOMMU device table entries
      iommu/amd - Add a debugfs entry to specify a IOMMU device table entry


 drivers/iommu/Kconfig             |    7 +
 drivers/iommu/Makefile            |    1 
 drivers/iommu/amd_iommu_debugfs.c |  316 +++++++++++++++++++++++++++++++++++++
 drivers/iommu/amd_iommu_init.c    |    6 -
 drivers/iommu/amd_iommu_proto.h   |    7 +
 drivers/iommu/amd_iommu_types.h   |    3 
 6 files changed, 338 insertions(+), 2 deletions(-)
 create mode 100644 drivers/iommu/amd_iommu_debugfs.c

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