_systemtap_ rebased to version 3.2
The *SystemTap* utility has been updated to upstream version 3.2. Notable enhancements include:
* Support for extraction of matched regular expression has been added.
* Probe aliases for accepting input from the standard input have been added.
* Translator diagnostics have been improved.
* Support for the new `statx` system call has been added.
* A new string function `strpos()` for detecting substring position has been added to the stap language.
Additionally, this update fixes the following bugs:
* Previously, the statistics extractor functions `@min()` and `@max()` returned incorrect values. As a consequence, scripts relying on these functions did not work properly. The `@min()` and `@max()` functions have been fixed to return the correct maximum and minimum values. As a result, the affected scripts now work as expected.
* Previously, some kernel tracepoints were inconsistently listed with the `stap -L` command, even when they couldn't be probed. *SystemTap* has been fixed so that the listed and probe-able tracepoint sets match again.
* The `netdev.receive` probe has been fixed and can collect data again.
* The example script `nettop.stp` affected by the broken `netdev.receive` probe again works as expected.
Note that the kernel version in Red Hat Enterprise Linux does not support extended Berkeley Packet Filter (eBPF), and consequently the related upstream *SystemTap* features are not available.