On Wed, Aug 29, 2018 at 10:18:25AM -0700, Andi Kleen wrote:
SNIP
> diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
> index e731f55da072..f3f7ad6ae202 100644
> --- a/tools/perf/util/auxtrace.h
> +++ b/tools/perf/util/auxtrace.h
> @@ -576,6 +576,23 @@ static inline void auxtrace__free(struct perf_session
> *session)
> return session->auxtrace->free(session);
> }
>
> +#define ITRACE_HELP \
> +" i synthesize instructions events\n" \
> +" b synthesize branches events\n" \
> +" c synthesize branches events (calls only)\n" \
> +" r synthesize branches events (returns only)\n" \
> +" x synthesize transactions events\n" \
> +" w synthesize ptwrite events\n" \
> +" p synthesize power events\n" \
> +" e synthesize error events\n" \
> +" d create a debug log\n" \
> +" g[len] synthesize a call chain (use with i or x)\n" \
> +" l[len] synthesize last branch entries (use with i or
> x)\n" \
> +" sNUMBER skip initial number of events\n" \
> +" PERIOD[ns|us|ms|i|t] specify period to sample stream\n" \
> +" concatenate multiple options. Default is ibxwpe\n"
> +
> +
Please align this a bit more (perf report usage) and add the ':'
--itrace[=<opts>]
Instruction Tracing options
i synthesize instructions events
b synthesize branches events
c synthesize branches events (calls only)
r synthesize branches events (returns only)
x synthesize transactions events
w synthesize ptwrite events
p synthesize power events
e synthesize error events
d create a debug log
g[len] synthesize a call chain (use with i or x)
l[len] synthesize last branch entries (use with i or x)
sNUMBER skip initial number of events
PERIOD[ns|us|ms|i|t] specify period to sample stream
concatenate multiple options. Default is ibxwpe
like for example for '-g' option:
-g, --call-graph
<print_type,threshold[,print_limit],order,sort_key[,branch],value>
Display call graph (stack chain/backtrace):
print_type: call graph printing style
(graph|flat|fractal|folded|none)
threshold: minimum call graph inclusion
threshold (<percent>)
print_limit: maximum number of call graph
entry (<number>)
order: call graph order (caller|callee)
sort_key: call graph sort key
(function|address)
branch: include last branch info to
call graph (branch)
value: call graph value
(percent|period|count)
Default: graph,0.5,caller,function,percent
jirka
