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[bolt][tests] Skip tests that use perf when perf counters are unavailable (#107892)

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On the GitHub Action runners, perf always fails with the error below ,
so we need to skip the perf tests on platforms like this that have
limited access to the perf counters.

```
Access to performance monitoring and observability operations is limited.
Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open
access to performance monitoring and observability operations for processes
without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability.
More information can be found at 'Perf events and tool security' document:
https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html
perf_event_paranoid setting is 4:
  -1: Allow use of (almost) all events by all users
      Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK
>= 0: Disallow raw and ftrace function tracepoint access
>= 1: Disallow CPU event access
>= 2: Disallow kernel profiling
To make the adjusted perf_event_paranoid setting permanent preserve it
in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>)
```

(cherry picked from commit 773353b20a49bfa0dab608d415c1b4734d037fce)
This commit is contained in:
Tom Stellard 2024-09-17 17:07:35 -07:00 committed by Tobias Hieta
parent 64075837b5
commit de7ee2e3ae
1 changed files with 3 additions and 2 deletions
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5
bolt/test/perf2bolt/lit.local.cfg
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@ -1,4 +1,5 @@
import shutil
import subprocess
if shutil.which("perf") is not None:
config.available_features.add("perf")
if shutil.which("perf") is not None and subprocess.run(["perf", "record", "-e", "cycles:u", "-o", "/dev/null", "--", "perf", "--version"], capture_output=True).returncode == 0:
config.available_features.add("perf")