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Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index c9b64dea1216..fe60f9d7a0e6 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -845,6 +845,26 @@ config RING_BUFFER_STARTUP_TEST If unsure, say N +config RING_BUFFER_VALIDATE_TIME_DELTAS + bool "Verify ring buffer time stamp deltas" + depends on RING_BUFFER + help + This will audit the time stamps on the ring buffer sub + buffer to make sure that all the time deltas for the + events on a sub buffer matches the current time stamp. + This audit is performed for every event that is not + interrupted, or interrupting another event. A check + is also made when traversing sub buffers to make sure + that all the deltas on the previous sub buffer do not + add up to be greater than the current time stamp. + + NOTE: This adds significant overhead to recording of events, + and should only be used to test the logic of the ring buffer. + Do not use it on production systems. + + Only say Y if you understand what this does, and you + still want it enabled. Otherwise say N + config MMIOTRACE_TEST tristate "Test module for mmiotrace" depends on MMIOTRACE && m |