perf_buf 1494 drivers/hwtracing/coresight/coresight-tmc-etr.c if (WARN_ON(drvdata->perf_buf != etr_buf)) { perf_buf 1605 drivers/hwtracing/coresight/coresight-tmc-etr.c drvdata->perf_buf = etr_perf->etr_buf; perf_buf 1652 drivers/hwtracing/coresight/coresight-tmc-etr.c drvdata->perf_buf = NULL; perf_buf 209 drivers/hwtracing/coresight/coresight-tmc.h struct etr_buf *perf_buf;