diff options
Diffstat (limited to 'tools/perf/Documentation/perf-report.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 4fa509b15948..c242e8da6b1a 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -115,6 +115,8 @@ OPTIONS - p_stage_cyc: On powerpc, this presents the number of cycles spent in a pipeline stage. And currently supported only on powerpc. - addr: (Full) virtual address of the sampled instruction + - retire_lat: On X86, this reports pipeline stall of this instruction compared + to the previous instruction in cycles. And currently supported only on X86 By default, comm, dso and symbol keys are used. (i.e. --sort comm,dso,symbol) @@ -507,7 +509,7 @@ include::itrace.txt[] perf record --call-graph lbr. Disabled by default. In common cases with call stack overflows, it can recreate better call stacks than the default lbr call stack - output. But this approach is not full proof. There can be cases + output. But this approach is not foolproof. There can be cases where it creates incorrect call stacks from incorrect matches. The known limitations include exception handing such as setjmp/longjmp will have calls/returns not match. |