Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
---
tests/perf.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tests/perf.c b/tests/perf.c
index 8644e252..bd139bde 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -1298,9 +1298,7 @@ read_2_oa_reports(int format_id,
/* Note: we allocate a large buffer so that each read() iteration
* should scrape *all* pending records.
*
- * The largest buffer the OA unit supports is 16MB and the smallest
- * OA report format is 64bytes allowing up to 262144 reports to
- * be buffered.
+ * The largest buffer the OA unit supports is 16MB.
*
* Being sure we are fetching all buffered reports allows us to
* potentially throw away / skip all reports whenever we see
@@ -1313,7 +1311,8 @@ read_2_oa_reports(int format_id,
* to indicate that the OA unit may be over taxed if lots of reports
* are being lost.
*/
- int buf_size = 262144 * (64 + sizeof(struct drm_i915_perf_record_header));
+ int max_reports = (16 * 1024 * 1024) / format_size;
+ int buf_size = sample_size * max_reports * 1.5;
uint8_t *buf = malloc(buf_size);
int n = 0;
@@ -1325,6 +1324,7 @@ read_2_oa_reports(int format_id,
;
igt_assert(len > 0);
+ igt_debug("read %d bytes\n", (int)len);
for (size_t offset = 0; offset < len; offset += header->size) {
const uint32_t *report;
--
2.14.1
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