diff options
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
-rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index df6e4b0b84e9..b9881d6d41ba 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1188,9 +1188,13 @@ alloc_etr_buf(struct tmc_drvdata *drvdata, struct perf_event *event, /* * Try to match the perf ring buffer size if it is larger - * than the size requested via sysfs. + * than the size requested via sysfs. In snapsot mode the size + * of the perf ring buffer needs to be equal to the allocated + * size if we want to reuse the generic AUX buffer management + * mechanic. */ - if ((nr_pages << PAGE_SHIFT) > drvdata->size) { + if (snapshot || + (nr_pages << PAGE_SHIFT) > drvdata->size) { etr_buf = tmc_alloc_etr_buf(drvdata, (nr_pages << PAGE_SHIFT), 0, node, NULL); if (!IS_ERR(etr_buf)) |