Added by Xintian Wu about 4 years ago. Updated about 4 years ago.
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Description
According to changelogs, SEND_SIG_FORCED should be removed from 2.11.0.
It still exists in the code.
This causes build errors while compiling against 4.18 on centos 8.1.
I double-checked, and vanilla v4.18 and v4.18.20 kernels implement SEND_SIG_FORCED, as expected by LTTng-modules. It is removed from vanilla kernels starting from v4.20.
Note that RHEL and CentOS kernels integrate significant modifications from mainline kernels, and we need to track those distribution-specific changes very closely.
We need to identify the exact range of versions which include this change in the RHEL kernels so we can use the LTTNG_RHEL_KERNEL_RANGE() macro accordingly.
Here is the system info:
cat /proc/version
Linux version 4.18.0-147.5.1.el8_1.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 8.3.1 20190507 (Red Hat 8.3.1-4) (GCC)) #1 SMP Wed Feb 5 02:00:39 UTC 2020
This is the latest CentOS 8.1 baseOS kernel.