On Sat, 5 Aug 2023 00:41:13 +0800 kernel test robot lkp@intel.com wrote:
5276 if (cpumask_test_cpu(cpu, tr->tracing_cpumask) && 5277 !cpumask_test_cpu(cpu, tracing_cpumask_new)) { 5278 atomic_inc(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled); 5279 ring_buffer_record_disable_cpu(tr->array_buffer.buffer, cpu);
5280 ring_buffer_record_disable_cpu(tr->max_buffer.buffer, cpu);
The access to max_buffer requires a:
#ifdef CONFIG_TRACER_MAX_TRACE
Around them.
-- Steve
5281 } 5282 if (!cpumask_test_cpu(cpu, tr->tracing_cpumask) && 5283 cpumask_test_cpu(cpu, tracing_cpumask_new)) { 5284 atomic_dec(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled); 5285 ring_buffer_record_enable_cpu(tr->array_buffer.buffer, cpu); 5286 ring_buffer_record_enable_cpu(tr->max_buffer.buffer, cpu); 5287 } 5288 } 5289 arch_spin_unlock(&tr->max_lock);