diff options
| author | Ioana Ciornei <[email protected]> | 2021-01-14 19:07:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-01-27 15:13:52 +0100 |
| commit | 2cf1e703f066cfa82eb5a358ae84c29fe15a3b3a (patch) | |
| tree | 93d20834f3d19ba11f5d84774d5fd7390cd33a69 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 46707989269a251e5e4ca295975525605bc8afef (diff) | |
bus: fsl-mc: add fsl-mc userspace support
Adding userspace support for the MC (Management Complex) means exporting
an ioctl capable device file representing the root resource container.
This new functionality in the fsl-mc bus driver intends to provide
userspace applications an interface to interact with the MC firmware.
Commands that are composed in userspace are sent to the MC firmware
through the FSL_MC_SEND_MC_COMMAND ioctl. By default the implicit MC
I/O portal is used for this operation, but if the implicit one is busy,
a dynamic portal is allocated and then freed upon execution.
The command received through the ioctl interface is checked against a
known whitelist of accepted MC commands. Commands that attempt a change
in hardware configuration will need CAP_NET_ADMIN, while commands used
in debugging do not need it.
Acked-by: Laurentiu Tudor <[email protected]>
Signed-off-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions