[DON't MERGE] check-ipc-flood.sh: check ipc flood test logs from dmesg

[fredoh9]

Make sure IPC flood test results are printed. If the test summary is not
available, it is failed case. This is a fix of false positive case.

[ 96.248808] sof-audio-pci 0000:00:1f.3: error: debugfs write failed to idle -16

Signed-off-by: Fred Oh fred.oh@linux.intel.com

Related issue is thesofproject/linux#2204
I will debug why ipc flood test is not performed and failed to transit to idle.

[fredoh9]

Checking logs may not be good idea. It may not come if debug level is not verbose. I will debug why dmesg 'error' didn't lead to test failure.

[ 70.091602] sof-audio-pci 0000:00:1f.3: IPC Flood count: 10000, Avg response time: 50780ns
[ 70.091603] sof-audio-pci 0000:00:1f.3: Max response time: 452093ns
[ 70.091603] sof-audio-pci 0000:00:1f.3: Min response time: 32028ns

[fredoh9]

Looks this error is known false alarm, added to ignoring messages.

https://github.com/thesofproject/sof-test/blob/master/tools/sof-kernel-log-check.sh#L6

ignore_str="error: debugfs write failed to idle -16|error: status|iteration [01]"

[marc-hb]

ignore_str="error: debugfs write failed to idle -16|error: status|iteration [01]"

Ignoring errors is very dangerous and should be carefully reviewed and extensively documented. At the very least this code should be changed to something like:

# because blabla, see bug 1234
ignore_str="$ignore_str"'|error: debugfs write failed to idle -16'# because blabla, see bug 5678
ignore_str="$ignore_str"'|error: status'

@xiulipan , @aiChaoSONG and @Bin-QA please help.

EDIT: ignore_str partially documented in #268