mbox series

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

Message ID 20211216062405.415888-1-amitay@ozlabs.org
Headers show
Series Enable read timeout specification for sbefifo read | expand

Message

Amitay Isaacs Dec. 16, 2021, 6:24 a.m. UTC 
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(-)