From 76d835fcd429615b61fccbe65de4f53360a89ca7 Mon Sep 17 00:00:00 2001 From: Joakim Zhang Date: Fri, 1 Nov 2019 08:36:10 +0000 Subject: [PATCH] docs/perf: Add explanation for DDR_CAP_AXI_ID_FILTER_ENHANCED quirk Add explanation for DDR_CAP_AXI_ID_FILTER_ENHANCED quirk. Signed-off-by: Joakim Zhang [will: Simplified wording] Signed-off-by: Will Deacon --- Documentation/admin-guide/perf/imx-ddr.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/admin-guide/perf/imx-ddr.rst b/Documentation/admin-guide/perf/imx-ddr.rst index 517a205abad6..66988b481217 100644 --- a/Documentation/admin-guide/perf/imx-ddr.rst +++ b/Documentation/admin-guide/perf/imx-ddr.rst @@ -50,3 +50,8 @@ in the driver. axi_id to monitor a specific id, rather than having to specify axi_mask. e.g.:: perf stat -a -e imx8_ddr0/axid-read,axi_id=0x12/ cmd, which will monitor ARID=0x12 + +* With DDR_CAP_AXI_ID_FILTER_ENHANCED quirk. + This is an extension to the DDR_CAP_AXI_ID_FILTER quirk which permits + counting the number of bytes (as opposed to the number of bursts) from DDR + read and write transactions concurrently with another set of data counters.