On Wed, Nov 8, 2017 at 12:56 PM, Andi Kleen <a...@linux.intel.com> wrote: >> diff --git a/tools/perf/Documentation/perf-record.txt >> b/tools/perf/Documentation/perf-record.txt >> index 5a626ef666c2..3b156fa03c99 100644 >> --- a/tools/perf/Documentation/perf-record.txt >> +++ b/tools/perf/Documentation/perf-record.txt >> @@ -57,6 +57,14 @@ OPTIONS >> FP mode, "dwarf" for DWARF mode, "lbr" for LBR mode >> and >> "no" for disable callgraph. >> - 'stack-size': user stack size for dwarf mode >> + - 'skid_ip' : boolean, captures the unmodified interrupt instruction >> pointer >> + (IP) in each sample. Usually with event-based >> sampling, the IP >> + has skid and rarely point to the instruction which >> caused the >> + event to overflow. On some architectures, the hardware >> can eliminate >> + the skid and perf_events returns it as the IP with >> precise sampling is >> + enabled. But for certain measurements, it may be >> useful to have both >> + the correct and skid ip. This option enable capturing >> the skid ip in >> + additional to the corrected ip. Default is: false > > Actually in the scanner you use 'skid-ip' (with minus). Documentation should > at least match > the scanner. > I have fixed the documentation. I used - because many other terms and options use - instead of _.
> _ is usually safer than - > I tend to agree with you. > -Andi
