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| author |   Oliver O'Halloran <oohall@gmail.com> | 2020-07-27 11:01:27 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-07-29 21:02:11 +1000 |
| commit | 5f8cf6475828b600ff6d000e580c961ac839cc61 (patch) | |
| tree | 496c164fd329769d585d63c6e66b450f55e43ece /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | selftests/powerpc: Add test for pkey siginfo verification (diff) | |
| download | wireguard-linux-5f8cf6475828b600ff6d000e580c961ac839cc61.tar.xz wireguard-linux-5f8cf6475828b600ff6d000e580c961ac839cc61.zip | |
selftests/powerpc: Squash spurious errors due to device removal
For drivers that don't have the error handling callbacks we implement
recovery by removing the device and re-probing it. This causes the sysfs
directory for the PCI device to be removed which causes the following
spurious error to be printed when checking the PE state:
Breaking 0005:03:00.0...
./eeh-basic.sh: line 13: can't open /sys/bus/pci/devices/0005:03:00.0/eeh_pe_state: no such file
0005:03:00.0, waited 0/60
0005:03:00.0, waited 1/60
0005:03:00.0, waited 2/60
0005:03:00.0, waited 3/60
0005:03:00.0, waited 4/60
0005:03:00.0, waited 5/60
0005:03:00.0, waited 6/60
0005:03:00.0, waited 7/60
0005:03:00.0, Recovered after 8 seconds
We currently try to avoid this by checking if the PE state file exists
before reading from it. This is however inherently racy so re-work the
state checking so that we only read from the file once, and we squash any
errors that occur while reading.
Fixes: 85d86c8aa52e ("selftests/powerpc: Add basic EEH selftest")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200727010127.23698-1-oohall@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions