Since tracepoints use RCU for protection, they must not be called on offline cpus. Running with LOCKDEP enabled discovered few scenarios where trace points were called on offline cpus. These patches fix this by converting these trace events into conditonal trace events where condition is cpu_online(smp_processor_id())
Previous posting of the patchset can be found here: https://lkml.org/lkml/2015/4/28/512 This resend CCs people who added/edited the trace events in question. Shreyas B. Prabhu (3): tracing/mm: Don't trace kmem_cache_free on offline cpus tracing/mm: Don't trace mm_page_free on offline cpus tracing/mm: Don't trace mm_page_pcpu_drain on offline cpus include/trace/events/kmem.h | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
