From 32b53b2b13798d307a90ab632835c367503cc0e7 Mon Sep 17 00:00:00 2001
From: gilbertlee-amd <44450918+gilbertlee-amd@users.noreply.github.com>
Date: Wed, 18 Aug 2021 22:57:20 -0600
Subject: [PATCH] Clarifying that hipExtLaunch timing does not include cache
 flush time (#2308)

---
 include/hip/hip_ext.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/hip/hip_ext.h b/include/hip/hip_ext.h
index 4d8386ebb7..e6429a9512 100644
--- a/include/hip/hip_ext.h
+++ b/include/hip/hip_ext.h
@@ -59,6 +59,8 @@ THE SOFTWARE.
  * @warning kernellParams argument is not yet implemented in HIP. Please use extra instead. Please
  refer to hip_porting_driver_api.md for sample usage.
  * HIP/ROCm actually updates the start event when the associated kernel completes.
+ * Currently, timing between startEvent and stopEvent does not include the time it takes to perform
+ * a system scope release / cache flush - only the time it takes to issues writes to cache.
  */
 HIP_PUBLIC_API
 hipError_t hipExtModuleLaunchKernel(hipFunction_t f, uint32_t globalWorkSizeX,