[PATCH v2 0/2] Enable read timeout specification for sbefifo read

Amitay Isaacs amitay at ozlabs.org
Thu Dec 16 17:24:03 AEDT 2021


Certain SBE operations (e.g. collecting trace information from processors)
can take long time (> 10 seconds) to finish before SBE can respond.
Such operations will currentlly timeout due to the default response
timeout of 10 seconds.  This patchset allows users to set a longer timeout
using ioctl on the sbefifo device fd, before issuing SBE operations that
are likely to take longer.

v2 changes:
  - uint32 --> u32
  - Avoid resetting the read timeout after single operation.  Use ioctl
    to set the read timeout per open fd for sbefifo device.
  - Specifying 0 value to ioctl will reset the timeout to default value
  - Document ioctl behaviour in uapi/linux/fsi.h


Amitay Isaacs (2):
  fsi: sbefifo: Use specified value of start of response timeout
  fsi: sbefifo: implement FSI_SBEFIFO_READ_TIMEOUT ioctl

 drivers/fsi/fsi-sbefifo.c | 48 ++++++++++++++++++++++++++++++++++++++-
 include/uapi/linux/fsi.h  | 14 ++++++++++++
 2 files changed, 61 insertions(+), 1 deletion(-)

-- 
2.33.1



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