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| author |   Gary R Hook <gary.hook@amd.com> | 2018-06-12 16:41:21 -0500 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2018-07-06 14:06:30 +0200 |
| commit | bad614b24293ae463e74d2465685f0e4e229baca (patch) | |
| tree | 5548eef5b84284b0621f60ffdde93c75e92a6241 /drivers/iommu/Makefile | |
| parent | Linux 4.18-rc3 (diff) | |
| download | linux-dev-bad614b24293ae463e74d2465685f0e4e229baca.tar.xz linux-dev-bad614b24293ae463e74d2465685f0e4e229baca.zip | |
iommu: Enable debugfs exposure of IOMMU driver internals
Provide base enablement for using debugfs to expose internal data of an
IOMMU driver. When called, create the /sys/kernel/debug/iommu directory.
Emit a strong warning at boot time to indicate that this feature is
enabled.
This function is called from iommu_init, and creates the initial DebugFS
directory. Drivers may then call iommu_debugfs_new_driver_dir() to
instantiate a device-specific directory to expose internal data.
It will return a pointer to the new dentry structure created in
/sys/kernel/debug/iommu, or NULL in the event of a failure.
Since the IOMMU driver can not be removed from the running system, there
is no need for an "off" function.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/Makefile')
| -rw-r--r-- | drivers/iommu/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 1fb695854809..74cfbc392862 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_IOMMU_API) += iommu.o obj-$(CONFIG_IOMMU_API) += iommu-traces.o obj-$(CONFIG_IOMMU_API) += iommu-sysfs.o +obj-$(CONFIG_IOMMU_DEBUGFS) += iommu-debugfs.o obj-$(CONFIG_IOMMU_DMA) += dma-iommu.o obj-$(CONFIG_IOMMU_IO_PGTABLE) += io-pgtable.o obj-$(CONFIG_IOMMU_IO_PGTABLE_ARMV7S) += io-pgtable-arm-v7s.o |