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lastdragon
2026-09-06 12:53:21 -06:00
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linux-7.2.3/Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb
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What: /sys/bus/coresight/devices/ultra_smb<N>/enable_sink
Date: January 2023
KernelVersion: 6.3
Contact: Junhao He <hejunhao3@huawei.com>
Description: (RW) Add/remove a SMB device from a trace path. There can be
multiple sources for a single SMB device.
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_size
Date: January 2023
KernelVersion: 6.3
Contact: Junhao He <hejunhao3@huawei.com>
Description: (RO) Shows the buffer size of each UltraSoc SMB device.
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_status
Date: January 2023
KernelVersion: 6.3
Contact: Junhao He <hejunhao3@huawei.com>
Description: (RO) Shows the value of UltraSoc SMB status register.
BIT(0) is zero means buffer is empty.
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/read_pos
Date: January 2023
KernelVersion: 6.3
Contact: Junhao He <hejunhao3@huawei.com>
Description: (RO) Shows the value of UltraSoc SMB Read Pointer register.
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/write_pos
Date: January 2023
KernelVersion: 6.3
Contact: Junhao He <hejunhao3@huawei.com>
Description: (RO) Shows the value of UltraSoc SMB Write Pointer register.