diff options
| author | Breno Leitao <leitao@debian.org> | 2026-08-05 07:52:36 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-08-10 11:47:20 -1000 |
| commit | a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 (patch) | |
| tree | 39f5b258386e1127d253d293194e9a2991bf3c34 /drivers/fsi/Kconfig | |
| download | linux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.tar.gz linux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.zip | |
workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted
apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.
No functional change: only unbound workqueues reach apply_wqattrs_*()
today.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/fsi/Kconfig')
| -rw-r--r-- | drivers/fsi/Kconfig | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/fsi/Kconfig b/drivers/fsi/Kconfig new file mode 100644 index 000000000..79a315936 --- /dev/null +++ b/drivers/fsi/Kconfig @@ -0,0 +1,105 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# FSI subsystem +# + +menuconfig FSI + tristate "FSI support" + depends on OF + select CRC4 + help + FSI - the FRU Support Interface - is a simple bus for low-level + access to POWER-based hardware. + +if FSI + +config FSI_NEW_DEV_NODE + bool "Create '/dev/fsi' directory for char devices" + default n + help + This option causes char devices created for FSI devices to be + located under a common /dev/fsi/ directory. Set to N unless your + userspace has been updated to handle the new location. + + Additionally, it also causes the char device names to be offset + by one so that chip 0 will have /dev/scom1 and chip1 /dev/scom2 + to match old userspace expectations. + + New userspace will use udev rules to generate predictable access + symlinks in /dev/fsi/by-path when this option is enabled. + +config FSI_MASTER_GPIO + tristate "GPIO-based FSI master" + depends on GPIOLIB + select CRC4 + help + This option enables a FSI master driver using GPIO lines. + +config FSI_MASTER_HUB + tristate "FSI hub master" + help + This option enables a FSI hub master driver. Hub is a type of FSI + master that is connected to the upstream master via a slave. Hubs + allow chaining of FSI links to an arbitrary depth. This allows for + a high target device fanout. + +config FSI_MASTER_AST_CF + tristate "FSI master based on Aspeed ColdFire coprocessor" + depends on GPIOLIB + depends on GPIO_ASPEED + select GENERIC_ALLOCATOR + help + This option enables a FSI master using the AST2400 and AST2500 GPIO + lines driven by the internal ColdFire coprocessor. This requires + the corresponding machine specific ColdFire firmware to be available. + +config FSI_MASTER_ASPEED + tristate "FSI ASPEED master" + depends on HAS_IOMEM + help + This option enables a FSI master that is present behind an OPB bridge + in the AST2600. + + Enable it for your BMC kernel in an OpenPower or IBM Power system. + +config FSI_MASTER_I2CR + tristate "IBM I2C Responder virtual FSI master" + depends on I2C + help + This option enables a virtual FSI master in order to access a CFAM + behind an IBM I2C Responder (I2CR) chip. The I2CR is an I2C device + that translates I2C commands to CFAM or SCOM operations, effectively + implementing an FSI master and bus. + +config FSI_SCOM + tristate "SCOM FSI client device driver" + help + This option enables an FSI based SCOM device driver. + +config FSI_SBEFIFO + tristate "SBEFIFO FSI client device driver" + depends on OF_ADDRESS + help + This option enables an FSI based SBEFIFO device driver. The SBEFIFO is + a pipe-like FSI device for communicating with the self boot engine + (SBE) on POWER processors. + +config FSI_OCC + tristate "OCC SBEFIFO client device driver" + depends on FSI_SBEFIFO + help + This option enables an SBEFIFO based On-Chip Controller (OCC) device + driver. The OCC is a device embedded on a POWER processor that collects + and aggregates sensor data from the processor and system. The OCC can + provide the raw sensor data as well as perform thermal and power + management on the system. + +config I2CR_SCOM + tristate "IBM I2C Responder SCOM driver" + depends on FSI_MASTER_I2CR + help + This option enables an I2C Responder based SCOM device driver. The + I2CR has the capability to directly perform SCOM operations instead + of using the FSI2PIB engine. + +endif |
