perf trace: Provide libtracevent with a kernel symbol resolver
tip-bot for Arnaldo Carvalho de Melo
merge botCommit-ID: 706c3da409dfc6964740ac503c040c4c621954fd Gitweb: http://git.kernel.org/tip/706c3da409dfc6964740ac503c040c4c621954fd Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Wed, 22 Jul 2015 16:16:16 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Thu, 23 Jul 2015 22:01:38 -0300
perf trace: Provide libtracevent with a kernel symbol resolver
So that beautifiers wanting to resolve kernel function addresses to names can do its work, now, for instance, the 'timer' tracepoints beautifiers works with 'perf trace', see the "function=tick..." part:
# perf trace --event timer:hrtimer_start <SNIP> 0.000 timer:hrtimer_start:hrtimer=0xffff88026f3101c0 function=tick_sched_timer/0x0 expires=52098339000000 softexpires=52098339000000) 0.003 timer:hrtimer_start:hrtimer=0xffff88026f3101c0 function=tick_sched_timer/0x0 expires=52098339000000 softexpires=52098339000000) <SNIP>
Reported-by Thomas Gleixner <[email protected]>
Acked-by David Ahern <[email protected]>
Cc Adrian Hunter <[email protected]>
Cc Borislav Petkov <[email protected]>
Cc Frederic Weisbecker <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Stephane Eranian <[email protected]>
Cc Steven Rostedt <[email protected]>
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
--- tools/perf/builtin-trace.c | 3 +++ 1 file changed, 3 insertions(+)
tools/perf/builtin-trace.c +3 -0
@@ -1489,6 +1489,9 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)if (trace->host ==NULL )return -ENOMEM ; +if (trace_event__register_resolver (trace->host) <0 ) +return -errno; + err =__machine__synthesize_threads (trace->host, &trace->tool, &trace->opts.target, evlist->threads, trace__tool_process, false, trace->opts.proc_map_timeout);