Document new options which is introduced by Arm SPE, the event type 'ldst' is added for recording both load and store memory operations; and adds the information for '--itrace=M' which can be used to synthesize memory samples for Arm SPE.
Signed-off-by: Leo Yan <[email protected]> --- tools/perf/Documentation/perf-mem.txt | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt index 199ea0f0a6c0..2455d485044f 100644 --- a/tools/perf/Documentation/perf-mem.txt +++ b/tools/perf/Documentation/perf-mem.txt @@ -38,7 +38,12 @@ 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; on Intel and PowerPC systems, the types 'load' and 'store' are + supported but misses the type 'ldst'; on Arm64 system, it uses SPE AUX + trace data to generate memory events, so need to specify one of these + three types. -D:: --dump-raw-samples:: @@ -84,6 +89,9 @@ RECORD OPTIONS --ldlat <n>:: Specify desired latency for loads event. (x86 only) +--itrace=M:: + Synthesize memory samples from the AUX trace data. (Arm SPE only) + In addition, for report all perf report options are valid, and for record all perf record options. -- 2.20.1
