[PATCH v3 9/9] perf mem: Document event type 'ldst'

Leo Yan
2020-10-28T06:41:19Z

The event type 'ldst' is added for recording both load and store memory
operations, this patch documents for the new event type.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
tools/perf/Documentation/perf-mem.txt | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
index 199ea0f0a6c0..c50ef37dba72 100644
--- a/tools/perf/Documentation/perf-mem.txt
+++ b/tools/perf/Documentation/perf-mem.txt
@@ -38,7 +38,11 @@ OPTIONS

-t::
--type=<type>::
- Select the memory operation type: load or store (default: load,store)
+ Select the memory operation type: load, store, ldst (default: load,store).
+ The type 'ldst' means the single event can record both for load and store
+ operations; Intel and PowerPC support the types 'load' and 'store' but
+ 'ldst' cannot be used; on Arm64, it uses Arm SPE as memory events and
+ user needs to specify one of these three types.