[PATCH -tip 2/4] perf script: print DSOs and symbols for BTSbranch_from addr

[Akihiro Nagai]

Print DSOs and symbols for branch_from address of BTS.
BTS records branch_from address in 'addr' fields,
and branch_to address in 'ip' field. Latest perf-script
resolves DSOs and symbols only for 'ip' field.
This patch resolves them for 'addr' field too.

# perf script -f ip,addr,dso,sym
  3f03e016b0                  ([kernel.kallsyms]) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e016b0           _start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e04b80        _dl_start (/lib64/ld-2.14.so)       3f03e016b3 _start (/lib64/ld-2.14.so)
  3f03e04b80        _dl_start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e04ba6        _dl_start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])

Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@xxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
---

 tools/perf/builtin-script.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e45433f..2d68086 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -306,6 +306,12 @@ static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 	     (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
 		return true;
 
+	/* BTS Events */
+	if ((attr->type == PERF_TYPE_HARDWARE) &&
+	    (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
+	    (attr->sample_period == 1))
+		return true;
+
 	return false;
 }
 

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