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| author | Dmitry Vyukov <[email protected]> | 2024-06-11 09:50:31 +0200 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2024-08-08 17:36:35 +0200 |
| commit | 6cd0dd934b03d4ee4094ac474108723e2f2ed7d6 (patch) | |
| tree | 5647e97187321200708feb39da5dec11c4750329 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 477d81a1c47a1b79b9c08fc92b5dea3c5143800b (diff) | |
kcov: Add interrupt handling self test
Add a boot self test that can catch sprious coverage from interrupts.
The coverage callback filters out interrupt code, but only after the
handler updates preempt count. Some code periodically leaks out
of that section and leads to spurious coverage.
Add a best-effort (but simple) test that is likely to catch such bugs.
If the test is enabled on CI systems that use KCOV, they should catch
any issues fast.
Signed-off-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Alexander Potapenko <[email protected]>
Reviewed-by: Marco Elver <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Link: https://lore.kernel.org/all/7662127c97e29da1a748ad1c1539dd7b65b737b2.1718092070.git.dvyukov@google.com
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions