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| author | Michael Ellerman <mpe@ellerman.id.au> | 2021-05-07 16:42:25 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-05-17 15:27:47 +1000 |
| commit | 34f7f79827ec4db30cff9001dfba19f496473e8d (patch) | |
| tree | 413b5e683c44bffdf055f3078b2d7f00ddfd811b /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | ca8cc36901e9bdd01d371f6236faf9f61d1325d1 (diff) | |
| download | linux-34f7f79827ec4db30cff9001dfba19f496473e8d.tar.gz linux-34f7f79827ec4db30cff9001dfba19f496473e8d.zip | |
selftests/powerpc: Add test of mitigation patching
We recently discovered some of our mitigation patching was not safe
against other CPUs running concurrently.
Add a test which enable/disables all mitigations in a tight loop while
also running some stress load. On an unpatched system this almost always
leads to an oops and panic/reboot, but we also check if the kernel
becomes tainted in case we have a non-fatal oops.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210507064225.1556312-1-mpe@ellerman.id.au
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
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